./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_5.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_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/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_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/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_cfac2014-a51a-4e88-9978-094d405e9de3/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 89c044706e820035925e4fe286499de44c544f06f44ca532a8f8ddb98bf32e98 .................................................................................................................................................................................................................................................. 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_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/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_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/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_cfac2014-a51a-4e88-9978-094d405e9de3/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 89c044706e820035925e4fe286499de44c544f06f44ca532a8f8ddb98bf32e98 ................................................................................................................................................................................................................................................................................................... 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 05:08:39,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:08:39,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:08:39,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:08:39,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:08:39,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:08:39,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:08:39,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:08:39,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:08:39,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:08:39,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:08:39,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:08:39,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:08:39,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:08:39,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:08:39,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:08:39,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:08:39,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:08:39,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:08:39,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:08:39,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:08:39,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:08:39,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:08:39,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:08:39,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:08:39,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:08:39,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:08:39,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:08:39,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:08:39,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:08:39,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:08:39,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:08:39,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:08:39,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:08:39,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:08:39,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:08:39,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:08:39,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:08:39,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:08:39,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:08:39,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:08:39,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:08:39,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:08:39,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:08:39,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:08:39,728 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:08:39,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:08:39,728 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:08:39,729 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:08:39,729 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:08:39,729 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:08:39,729 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:08:39,730 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:08:39,731 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:08:39,731 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:08:39,731 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:08:39,732 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:08:39,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:08:39,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:08:39,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:08:39,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:08:39,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:08:39,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:08:39,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:08:39,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:08:39,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:08:39,735 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:08:39,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:08:39,735 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:08:39,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:08:39,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:08:39,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:08:39,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:39,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:08:39,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:08:39,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:08:39,740 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:08:39,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:08:39,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:08:39,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:08:39,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:08:39,741 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_cfac2014-a51a-4e88-9978-094d405e9de3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89c044706e820035925e4fe286499de44c544f06f44ca532a8f8ddb98bf32e98 [2021-10-29 05:08:40,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:08:40,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:08:40,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:08:40,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:08:40,186 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:08:40,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2021-10-29 05:08:40,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data/27e9dbd9e/c7ccf21e47d149648eeac63bcbbe1104/FLAG61b963cf7 [2021-10-29 05:08:40,854 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:08:40,855 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2021-10-29 05:08:40,868 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data/27e9dbd9e/c7ccf21e47d149648eeac63bcbbe1104/FLAG61b963cf7 [2021-10-29 05:08:41,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data/27e9dbd9e/c7ccf21e47d149648eeac63bcbbe1104 [2021-10-29 05:08:41,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:08:41,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:08:41,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:41,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:08:41,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:08:41,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a57b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41, skipping insertion in model container [2021-10-29 05:08:41,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:08:41,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:08:41,554 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_cfac2014-a51a-4e88-9978-094d405e9de3/sv-benchmarks/c/floats-cdfpl/newton_1_5.i[1224,1237] [2021-10-29 05:08:41,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:41,574 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:08:41,603 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_cfac2014-a51a-4e88-9978-094d405e9de3/sv-benchmarks/c/floats-cdfpl/newton_1_5.i[1224,1237] [2021-10-29 05:08:41,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:41,621 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:08:41,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41 WrapperNode [2021-10-29 05:08:41,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:41,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:41,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:08:41,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:08:41,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:41,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:08:41,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:08:41,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:08:41,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:08:41,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:08:41,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:08:41,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:08:41,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (1/1) ... [2021-10-29 05:08:41,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:41,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:41,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:08:41,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:08:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:08:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:08:41,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:08:41,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:08:42,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:08:42,098 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:08:42,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:42 BoogieIcfgContainer [2021-10-29 05:08:42,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:08:42,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:08:42,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:08:42,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:08:42,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:08:41" (1/3) ... [2021-10-29 05:08:42,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f5ed5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:42, skipping insertion in model container [2021-10-29 05:08:42,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:41" (2/3) ... [2021-10-29 05:08:42,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f5ed5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:42, skipping insertion in model container [2021-10-29 05:08:42,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:42" (3/3) ... [2021-10-29 05:08:42,111 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2021-10-29 05:08:42,118 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:08:42,118 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:08:42,175 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:08:42,183 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 05:08:42,184 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:08:42,200 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 05:08:42,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:08:42,206 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:42,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:08:42,207 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:42,214 INFO L85 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-29 05:08:42,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:08:42,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751968709] [2021-10-29 05:08:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:42,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:08:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:42,474 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:08:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:08:42,557 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:08:42,561 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:08:42,562 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:08:42,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:08:42,569 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:08:42,572 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:08:42,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:08:42 BoogieIcfgContainer [2021-10-29 05:08:42,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:08:42,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:08:42,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:08:42,603 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:08:42,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:42" (3/4) ... [2021-10-29 05:08:42,607 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:08:42,607 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:08:42,614 INFO L168 Benchmark]: Toolchain (without parser) took 1418.75 ms. Allocated memory is still 104.9 MB. Free memory was 70.7 MB in the beginning and 53.5 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:42,615 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 61.0 MB in the beginning and 61.0 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:42,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 427.26 ms. Allocated memory is still 104.9 MB. Free memory was 70.6 MB in the beginning and 80.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:42,618 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.35 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:42,620 INFO L168 Benchmark]: Boogie Preprocessor took 39.26 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 78.2 MB in the end (delta: 836.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:42,621 INFO L168 Benchmark]: RCFGBuilder took 377.36 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 66.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:42,628 INFO L168 Benchmark]: TraceAbstraction took 495.02 ms. Allocated memory is still 104.9 MB. Free memory was 66.4 MB in the beginning and 53.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:08:42,631 INFO L168 Benchmark]: Witness Printer took 5.82 ms. Allocated memory is still 104.9 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:08:42,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 61.0 MB in the beginning and 61.0 MB in the end (delta: 28.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 427.26 ms. Allocated memory is still 104.9 MB. Free memory was 70.6 MB in the beginning and 80.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.35 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.26 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 78.2 MB in the end (delta: 836.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 377.36 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 66.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 495.02 ms. Allocated memory is still 104.9 MB. Free memory was 66.4 MB in the beginning and 53.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.82 ms. Allocated memory is still 104.9 MB. Free memory is still 53.5 MB. 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: 0.3s, 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 05:08:42,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/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 05:08:45,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:08:45,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:08:45,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:08:45,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:08:45,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:08:45,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:08:45,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:08:45,913 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:08:45,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:08:45,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:08:45,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:08:45,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:08:45,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:08:45,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:08:45,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:08:45,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:08:45,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:08:45,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:08:45,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:08:45,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:08:45,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:08:45,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:08:45,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:08:45,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:08:45,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:08:45,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:08:45,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:08:45,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:08:45,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:08:45,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:08:45,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:08:45,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:08:45,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:08:45,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:08:45,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:08:45,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:08:45,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:08:45,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:08:45,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:08:45,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:08:45,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:08:46,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:08:46,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:08:46,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:08:46,039 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:08:46,039 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:08:46,040 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:08:46,040 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:08:46,040 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:08:46,041 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:08:46,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:08:46,046 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:08:46,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:08:46,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:08:46,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:08:46,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:08:46,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:08:46,048 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:08:46,048 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:08:46,048 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:08:46,049 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:08:46,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:08:46,049 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:08:46,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:08:46,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:08:46,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:08:46,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:08:46,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:46,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:08:46,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:08:46,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:08:46,052 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:08:46,052 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:08:46,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:08:46,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:08:46,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:08:46,053 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_cfac2014-a51a-4e88-9978-094d405e9de3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89c044706e820035925e4fe286499de44c544f06f44ca532a8f8ddb98bf32e98 [2021-10-29 05:08:46,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:08:46,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:08:46,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:08:46,601 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:08:46,602 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:08:46,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2021-10-29 05:08:46,705 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data/c65897f8c/dd1b7d40457e48f5b06e142ddad6637a/FLAG09d43b0d2 [2021-10-29 05:08:47,453 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:08:47,454 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/sv-benchmarks/c/floats-cdfpl/newton_1_5.i [2021-10-29 05:08:47,465 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data/c65897f8c/dd1b7d40457e48f5b06e142ddad6637a/FLAG09d43b0d2 [2021-10-29 05:08:47,785 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/data/c65897f8c/dd1b7d40457e48f5b06e142ddad6637a [2021-10-29 05:08:47,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:08:47,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:08:47,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:47,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:08:47,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:08:47,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:47" (1/1) ... [2021-10-29 05:08:47,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694323b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:47, skipping insertion in model container [2021-10-29 05:08:47,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:08:47" (1/1) ... [2021-10-29 05:08:47,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:08:47,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:08:48,024 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_cfac2014-a51a-4e88-9978-094d405e9de3/sv-benchmarks/c/floats-cdfpl/newton_1_5.i[1224,1237] [2021-10-29 05:08:48,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:48,045 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:08:48,070 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_cfac2014-a51a-4e88-9978-094d405e9de3/sv-benchmarks/c/floats-cdfpl/newton_1_5.i[1224,1237] [2021-10-29 05:08:48,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:08:48,094 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:08:48,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48 WrapperNode [2021-10-29 05:08:48,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:08:48,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:48,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:08:48,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:08:48,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:08:48,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:08:48,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:08:48,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:08:48,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:08:48,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:08:48,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:08:48,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:08:48,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (1/1) ... [2021-10-29 05:08:48,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:08:48,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:08:48,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:08:48,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:08:48,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:08:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:08:48,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:08:48,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:08:55,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:08:55,403 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:08:55,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:55 BoogieIcfgContainer [2021-10-29 05:08:55,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:08:55,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:08:55,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:08:55,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:08:55,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:08:47" (1/3) ... [2021-10-29 05:08:55,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3e4ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:55, skipping insertion in model container [2021-10-29 05:08:55,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:08:48" (2/3) ... [2021-10-29 05:08:55,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3e4ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:08:55, skipping insertion in model container [2021-10-29 05:08:55,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:55" (3/3) ... [2021-10-29 05:08:55,416 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_5.i [2021-10-29 05:08:55,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:08:55,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:08:55,484 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:08:55,492 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 05:08:55,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:08:55,509 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 05:08:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:08:55,515 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:55,516 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:55,517 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:55,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-29 05:08:55,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:55,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716566797] [2021-10-29 05:08:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:55,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:55,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:55,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:55,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:08:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:08:57,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:08:57,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:08:57,285 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 05:08:57,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:08:57,373 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 05:08:57,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:08:57,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716566797] [2021-10-29 05:08:57,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716566797] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:08:57,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:08:57,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:08:57,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67715907] [2021-10-29 05:08:57,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:08:57,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:08:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:08:57,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:08:57,418 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 05:08:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:08:57,441 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-29 05:08:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:08:57,444 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 05:08:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:08:57,456 INFO L225 Difference]: With dead ends: 23 [2021-10-29 05:08:57,456 INFO L226 Difference]: Without dead ends: 9 [2021-10-29 05:08:57,459 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 05:08:57,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-29 05:08:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-29 05:08:57,498 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 05:08:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-29 05:08:57,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-29 05:08:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:08:57,501 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-29 05:08:57,502 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 05:08:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-29 05:08:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:08:57,503 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:08:57,504 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:08:57,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:08:57,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:08:57,705 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:08:57,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:08:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-29 05:08:57,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:08:57,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488546720] [2021-10-29 05:08:57,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:08:57,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:08:57,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:08:57,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:08:57,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:09:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:09:17,379 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:09:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:09:19,991 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:09:19,992 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:09:19,994 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:09:20,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:09:20,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:09:20,200 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:09:20,203 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:09:20,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:09:20 BoogieIcfgContainer [2021-10-29 05:09:20,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:09:20,231 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:09:20,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:09:20,232 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:09:20,232 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:08:55" (3/4) ... [2021-10-29 05:09:20,235 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:09:20,291 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:09:20,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:09:20,301 INFO L168 Benchmark]: Toolchain (without parser) took 32502.50 ms. Allocated memory is still 86.0 MB. Free memory was 50.8 MB in the beginning and 64.0 MB in the end (delta: -13.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:20,301 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 67.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:20,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.50 ms. Allocated memory is still 86.0 MB. Free memory was 50.6 MB in the beginning and 63.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:20,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 108.05 ms. Allocated memory is still 86.0 MB. Free memory was 63.9 MB in the beginning and 69.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:20,303 INFO L168 Benchmark]: Boogie Preprocessor took 78.09 ms. Allocated memory is still 86.0 MB. Free memory was 69.9 MB in the beginning and 68.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:20,304 INFO L168 Benchmark]: RCFGBuilder took 7120.25 ms. Allocated memory is still 86.0 MB. Free memory was 68.6 MB in the beginning and 59.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:20,304 INFO L168 Benchmark]: TraceAbstraction took 24822.81 ms. Allocated memory is still 86.0 MB. Free memory was 58.6 MB in the beginning and 66.1 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:09:20,305 INFO L168 Benchmark]: Witness Printer took 60.20 ms. Allocated memory is still 86.0 MB. Free memory was 66.1 MB in the beginning and 64.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:09:20,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 67.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.50 ms. Allocated memory is still 86.0 MB. Free memory was 50.6 MB in the beginning and 63.9 MB in the end (delta: -13.3 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 108.05 ms. Allocated memory is still 86.0 MB. Free memory was 63.9 MB in the beginning and 69.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.09 ms. Allocated memory is still 86.0 MB. Free memory was 69.9 MB in the beginning and 68.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 7120.25 ms. Allocated memory is still 86.0 MB. Free memory was 68.6 MB in the beginning and 59.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24822.81 ms. Allocated memory is still 86.0 MB. Free memory was 58.6 MB in the beginning and 66.1 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 60.20 ms. Allocated memory is still 86.0 MB. Free memory was 66.1 MB in the beginning and 64.0 MB in the end (delta: 2.0 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: 24.7s, 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, 21.0s 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 05:09:20,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfac2014-a51a-4e88-9978-094d405e9de3/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...