./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG --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 f31be785cf3726a3cfca3e55a0470de7e92cdf0ff37aafb2e28c813a09088f83 .................................................................................................................................................................................................................................................. 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_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG --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 f31be785cf3726a3cfca3e55a0470de7e92cdf0ff37aafb2e28c813a09088f83 ................................................................................................................................................................................................................................................................................................... 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-b2eff8b [2021-10-29 06:00:51,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 06:00:51,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 06:00:51,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 06:00:51,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 06:00:51,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 06:00:51,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 06:00:51,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 06:00:51,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 06:00:51,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 06:00:51,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 06:00:51,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 06:00:51,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 06:00:51,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 06:00:51,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 06:00:51,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 06:00:51,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 06:00:51,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 06:00:51,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 06:00:51,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 06:00:51,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 06:00:51,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 06:00:51,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 06:00:51,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 06:00:51,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 06:00:51,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 06:00:51,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 06:00:51,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 06:00:51,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 06:00:51,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 06:00:51,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 06:00:51,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 06:00:51,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 06:00:51,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 06:00:51,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 06:00:51,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 06:00:51,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 06:00:51,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 06:00:51,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 06:00:51,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 06:00:51,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 06:00:51,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 06:00:51,856 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 06:00:51,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 06:00:51,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 06:00:51,859 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 06:00:51,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 06:00:51,860 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 06:00:51,860 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 06:00:51,860 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 06:00:51,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 06:00:51,865 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 06:00:51,865 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 06:00:51,865 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 06:00:51,865 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 06:00:51,866 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 06:00:51,866 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 06:00:51,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 06:00:51,867 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 06:00:51,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 06:00:51,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 06:00:51,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 06:00:51,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 06:00:51,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 06:00:51,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 06:00:51,869 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 06:00:51,870 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 06:00:51,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 06:00:51,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 06:00:51,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 06:00:51,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 06:00:51,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 06:00:51,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:00:51,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 06:00:51,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 06:00:51,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 06:00:51,873 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 06:00:51,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 06:00:51,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 06:00:51,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 06:00:51,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 06:00:51,874 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_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f31be785cf3726a3cfca3e55a0470de7e92cdf0ff37aafb2e28c813a09088f83 [2021-10-29 06:00:52,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 06:00:52,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 06:00:52,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 06:00:52,292 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 06:00:52,293 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 06:00:52,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-29 06:00:52,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data/509129c79/8999ea2fee5c4f8bafe50abfe9d523b5/FLAG0171d7804 [2021-10-29 06:00:53,026 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 06:00:53,028 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-29 06:00:53,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data/509129c79/8999ea2fee5c4f8bafe50abfe9d523b5/FLAG0171d7804 [2021-10-29 06:00:53,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data/509129c79/8999ea2fee5c4f8bafe50abfe9d523b5 [2021-10-29 06:00:53,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 06:00:53,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 06:00:53,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 06:00:53,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 06:00:53,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 06:00:53,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e01b5bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53, skipping insertion in model container [2021-10-29 06:00:53,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 06:00:53,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 06:00:53,633 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_24761aaf-1904-436f-87ee-614c56901f8c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-29 06:00:53,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:00:53,648 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 06:00:53,672 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_24761aaf-1904-436f-87ee-614c56901f8c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-29 06:00:53,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:00:53,691 INFO L208 MainTranslator]: Completed translation [2021-10-29 06:00:53,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53 WrapperNode [2021-10-29 06:00:53,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 06:00:53,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 06:00:53,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 06:00:53,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 06:00:53,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 06:00:53,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 06:00:53,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 06:00:53,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 06:00:53,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 06:00:53,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 06:00:53,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 06:00:53,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 06:00:53,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (1/1) ... [2021-10-29 06:00:53,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:00:53,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:00:53,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 06:00:53,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 06:00:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 06:00:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 06:00:53,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 06:00:53,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 06:00:54,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 06:00:54,268 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 06:00:54,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:00:54 BoogieIcfgContainer [2021-10-29 06:00:54,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 06:00:54,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 06:00:54,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 06:00:54,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 06:00:54,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:00:53" (1/3) ... [2021-10-29 06:00:54,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17bbf2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:00:54, skipping insertion in model container [2021-10-29 06:00:54,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:53" (2/3) ... [2021-10-29 06:00:54,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17bbf2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:00:54, skipping insertion in model container [2021-10-29 06:00:54,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:00:54" (3/3) ... [2021-10-29 06:00:54,282 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2021-10-29 06:00:54,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 06:00:54,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 06:00:54,414 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 06:00:54,431 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 [2021-10-29 06:00:54,431 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 06:00:54,450 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) [2021-10-29 06:00:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 06:00:54,457 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:00:54,458 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 06:00:54,459 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:00:54,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:00:54,477 INFO L85 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-29 06:00:54,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 06:00:54,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996601593] [2021-10-29 06:00:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:00:54,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 06:00:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 06:00:54,626 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 06:00:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 06:00:54,691 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 06:00:54,697 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 06:00:54,699 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:00:54,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 06:00:54,708 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 06:00:54,712 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 06:00:54,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 06:00:54 BoogieIcfgContainer [2021-10-29 06:00:54,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 06:00:54,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 06:00:54,742 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 06:00:54,742 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 06:00:54,743 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:00:54" (3/4) ... [2021-10-29 06:00:54,747 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 06:00:54,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 06:00:54,751 INFO L168 Benchmark]: Toolchain (without parser) took 1404.80 ms. Allocated memory was 81.8 MB in the beginning and 130.0 MB in the end (delta: 48.2 MB). Free memory was 45.7 MB in the beginning and 78.0 MB in the end (delta: -32.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:54,753 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 61.6 MB in the beginning and 61.6 MB in the end (delta: 52.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:00:54,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.25 ms. Allocated memory was 81.8 MB in the beginning and 130.0 MB in the end (delta: 48.2 MB). Free memory was 45.5 MB in the beginning and 105.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:54,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.78 ms. Allocated memory is still 130.0 MB. Free memory was 105.3 MB in the beginning and 103.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:00:54,758 INFO L168 Benchmark]: Boogie Preprocessor took 42.47 ms. Allocated memory is still 130.0 MB. Free memory was 103.9 MB in the beginning and 102.9 MB in the end (delta: 994.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:54,761 INFO L168 Benchmark]: RCFGBuilder took 489.17 ms. Allocated memory is still 130.0 MB. Free memory was 102.9 MB in the beginning and 91.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:54,768 INFO L168 Benchmark]: TraceAbstraction took 463.46 ms. Allocated memory is still 130.0 MB. Free memory was 90.9 MB in the beginning and 78.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 06:00:54,769 INFO L168 Benchmark]: Witness Printer took 7.03 ms. Allocated memory is still 130.0 MB. Free memory was 78.3 MB in the beginning and 78.0 MB in the end (delta: 274.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:00:54,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 61.6 MB in the beginning and 61.6 MB in the end (delta: 52.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.25 ms. Allocated memory was 81.8 MB in the beginning and 130.0 MB in the end (delta: 48.2 MB). Free memory was 45.5 MB in the beginning and 105.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.78 ms. Allocated memory is still 130.0 MB. Free memory was 105.3 MB in the beginning and 103.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.47 ms. Allocated memory is still 130.0 MB. Free memory was 103.9 MB in the beginning and 102.9 MB in the end (delta: 994.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 489.17 ms. Allocated memory is still 130.0 MB. Free memory was 102.9 MB in the beginning and 91.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 463.46 ms. Allocated memory is still 130.0 MB. Free memory was 90.9 MB in the beginning and 78.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 7.03 ms. Allocated memory is still 130.0 MB. Free memory was 78.3 MB in the beginning and 78.0 MB in the end (delta: 274.5 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s 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, 0.0s 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 [2021-10-29 06:00:54,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 06:00:57,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 06:00:57,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 06:00:58,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 06:00:58,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 06:00:58,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 06:00:58,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 06:00:58,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 06:00:58,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 06:00:58,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 06:00:58,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 06:00:58,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 06:00:58,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 06:00:58,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 06:00:58,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 06:00:58,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 06:00:58,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 06:00:58,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 06:00:58,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 06:00:58,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 06:00:58,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 06:00:58,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 06:00:58,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 06:00:58,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 06:00:58,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 06:00:58,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 06:00:58,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 06:00:58,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 06:00:58,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 06:00:58,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 06:00:58,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 06:00:58,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 06:00:58,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 06:00:58,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 06:00:58,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 06:00:58,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 06:00:58,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 06:00:58,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 06:00:58,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 06:00:58,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 06:00:58,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 06:00:58,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 06:00:58,172 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 06:00:58,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 06:00:58,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 06:00:58,174 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 06:00:58,174 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 06:00:58,175 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 06:00:58,175 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 06:00:58,175 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 06:00:58,175 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 06:00:58,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 06:00:58,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 06:00:58,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 06:00:58,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 06:00:58,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 06:00:58,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 06:00:58,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 06:00:58,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 06:00:58,178 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 06:00:58,179 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 06:00:58,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 06:00:58,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 06:00:58,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 06:00:58,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 06:00:58,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 06:00:58,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 06:00:58,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 06:00:58,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:00:58,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 06:00:58,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 06:00:58,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 06:00:58,182 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 06:00:58,182 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 06:00:58,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 06:00:58,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 06:00:58,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 06:00:58,183 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f31be785cf3726a3cfca3e55a0470de7e92cdf0ff37aafb2e28c813a09088f83 [2021-10-29 06:00:58,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 06:00:58,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 06:00:58,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 06:00:58,736 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 06:00:58,737 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 06:00:58,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-29 06:00:58,818 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data/fbc4ccbce/a2b5dd36b4544250ae59fd7b541a41ba/FLAGa76bc8f8d [2021-10-29 06:00:59,366 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 06:00:59,366 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i [2021-10-29 06:00:59,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data/fbc4ccbce/a2b5dd36b4544250ae59fd7b541a41ba/FLAGa76bc8f8d [2021-10-29 06:00:59,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/data/fbc4ccbce/a2b5dd36b4544250ae59fd7b541a41ba [2021-10-29 06:00:59,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 06:00:59,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 06:00:59,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 06:00:59,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 06:00:59,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 06:00:59,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:00:59" (1/1) ... [2021-10-29 06:00:59,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a263f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:00:59, skipping insertion in model container [2021-10-29 06:00:59,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:00:59" (1/1) ... [2021-10-29 06:00:59,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 06:00:59,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 06:00:59,939 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_24761aaf-1904-436f-87ee-614c56901f8c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-29 06:00:59,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:00:59,957 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 06:01:00,022 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_24761aaf-1904-436f-87ee-614c56901f8c/sv-benchmarks/c/floats-cdfpl/newton_1_8.i[1224,1237] [2021-10-29 06:01:00,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 06:01:00,058 INFO L208 MainTranslator]: Completed translation [2021-10-29 06:01:00,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00 WrapperNode [2021-10-29 06:01:00,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 06:01:00,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 06:01:00,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 06:01:00,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 06:01:00,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 06:01:00,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 06:01:00,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 06:01:00,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 06:01:00,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 06:01:00,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 06:01:00,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 06:01:00,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 06:01:00,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (1/1) ... [2021-10-29 06:01:00,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 06:01:00,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 06:01:00,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 06:01:00,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 06:01:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 06:01:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 06:01:00,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 06:01:00,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 06:01:07,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 06:01:07,386 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 06:01:07,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:07 BoogieIcfgContainer [2021-10-29 06:01:07,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 06:01:07,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 06:01:07,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 06:01:07,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 06:01:07,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:00:59" (1/3) ... [2021-10-29 06:01:07,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cfff23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:01:07, skipping insertion in model container [2021-10-29 06:01:07,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:01:00" (2/3) ... [2021-10-29 06:01:07,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cfff23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:01:07, skipping insertion in model container [2021-10-29 06:01:07,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:07" (3/3) ... [2021-10-29 06:01:07,410 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_8.i [2021-10-29 06:01:07,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 06:01:07,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 06:01:07,472 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 06:01:07,480 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 [2021-10-29 06:01:07,480 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 06:01:07,498 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) [2021-10-29 06:01:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 06:01:07,504 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:07,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:07,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:01:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-29 06:01:07,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:01:07,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218611080] [2021-10-29 06:01:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:07,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:01:07,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:01:07,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:01:07,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 06:01:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 06:01:08,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 06:01:08,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 06:01:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:09,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 06:01:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 06:01:09,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 06:01:09,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218611080] [2021-10-29 06:01:09,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218611080] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 06:01:09,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 06:01:09,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 06:01:09,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134713189] [2021-10-29 06:01:09,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 06:01:09,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 06:01:09,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 06:01:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 06:01:09,134 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) [2021-10-29 06:01:09,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 06:01:09,149 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-29 06:01:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 06:01:09,150 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 [2021-10-29 06:01:09,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 06:01:09,159 INFO L225 Difference]: With dead ends: 23 [2021-10-29 06:01:09,159 INFO L226 Difference]: Without dead ends: 9 [2021-10-29 06:01:09,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 06:01:09,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-29 06:01:09,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-29 06:01:09,192 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) [2021-10-29 06:01:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-29 06:01:09,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-29 06:01:09,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 06:01:09,194 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-29 06:01:09,195 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) [2021-10-29 06:01:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-29 06:01:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 06:01:09,196 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 06:01:09,196 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 06:01:09,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:09,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:01:09,411 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 06:01:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 06:01:09,412 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-29 06:01:09,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 06:01:09,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019034177] [2021-10-29 06:01:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 06:01:09,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 06:01:09,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 06:01:09,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 06:01:09,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 06:01:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 06:01:14,343 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 06:01:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 06:01:22,118 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 06:01:22,118 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 06:01:22,120 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 06:01:22,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 06:01:22,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 06:01:22,326 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 06:01:22,329 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 06:01:22,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 06:01:22 BoogieIcfgContainer [2021-10-29 06:01:22,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 06:01:22,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 06:01:22,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 06:01:22,355 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 06:01:22,356 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:01:07" (3/4) ... [2021-10-29 06:01:22,358 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 06:01:22,398 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 06:01:22,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 06:01:22,400 INFO L168 Benchmark]: Toolchain (without parser) took 22681.13 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.2 MB in the beginning and 38.7 MB in the end (delta: -6.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:22,401 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 54.5 MB. Free memory was 35.2 MB in the beginning and 35.2 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:01:22,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.61 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.0 MB in the beginning and 55.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:22,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.31 ms. Allocated memory is still 73.4 MB. Free memory was 55.9 MB in the beginning and 54.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 06:01:22,404 INFO L168 Benchmark]: Boogie Preprocessor took 33.66 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 52.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:22,405 INFO L168 Benchmark]: RCFGBuilder took 7244.38 ms. Allocated memory is still 73.4 MB. Free memory was 52.9 MB in the beginning and 43.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:22,406 INFO L168 Benchmark]: TraceAbstraction took 14963.52 ms. Allocated memory is still 73.4 MB. Free memory was 43.2 MB in the beginning and 40.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:22,406 INFO L168 Benchmark]: Witness Printer took 43.71 ms. Allocated memory is still 73.4 MB. Free memory was 40.5 MB in the beginning and 38.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 06:01:22,411 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 54.5 MB. Free memory was 35.2 MB in the beginning and 35.2 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.61 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.0 MB in the beginning and 55.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.31 ms. Allocated memory is still 73.4 MB. Free memory was 55.9 MB in the beginning and 54.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.66 ms. Allocated memory is still 73.4 MB. Free memory was 54.2 MB in the beginning and 52.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7244.38 ms. Allocated memory is still 73.4 MB. Free memory was 52.9 MB in the beginning and 43.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14963.52 ms. Allocated memory is still 73.4 MB. Free memory was 43.2 MB in the beginning and 40.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Witness Printer took 43.71 ms. Allocated memory is still 73.4 MB. Free memory was 40.5 MB in the beginning and 38.7 MB in the end (delta: 1.8 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 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: 14.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 0.2s 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! [2021-10-29 06:01:22,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24761aaf-1904-436f-87ee-614c56901f8c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...