./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba ................................................................................................................................................................................................................................................................................... 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_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba ................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:51:24,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:51:24,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:51:24,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:51:24,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:51:24,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:51:24,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:51:24,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:51:24,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:51:24,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:51:24,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:51:24,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:51:24,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:51:24,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:51:24,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:51:24,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:51:24,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:51:24,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:51:24,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:51:24,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:51:24,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:51:24,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:51:24,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:51:24,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:51:24,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:51:24,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:51:24,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:51:24,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:51:24,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:51:24,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:51:24,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:51:24,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:51:24,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:51:24,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:51:24,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:51:24,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:51:24,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:51:24,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:51:24,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:51:24,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:51:24,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:51:24,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:51:24,742 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:51:24,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:51:24,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:51:24,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:51:24,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:51:24,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:51:24,755 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:51:24,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:51:24,756 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:51:24,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:51:24,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:51:24,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:51:24,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:51:24,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:51:24,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:51:24,759 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:51:24,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:51:24,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:51:24,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:51:24,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:51:24,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:51:24,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:51:24,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:51:24,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:51:24,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:51:24,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:51:24,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:51:24,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:51:24,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:51:24,765 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:51:24,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:51:24,766 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:51:24,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-10-21 19:51:25,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:51:25,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:51:25,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:51:25,183 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:51:25,184 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:51:25,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-21 19:51:25,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data/48bc508cc/4f93e2dc5eb8449385e8e3d915df94b4/FLAGd3c2a8dc6 [2021-10-21 19:51:25,967 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:51:25,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-21 19:51:25,976 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data/48bc508cc/4f93e2dc5eb8449385e8e3d915df94b4/FLAGd3c2a8dc6 [2021-10-21 19:51:26,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data/48bc508cc/4f93e2dc5eb8449385e8e3d915df94b4 [2021-10-21 19:51:26,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:51:26,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:51:26,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:51:26,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:51:26,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:51:26,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6462a793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26, skipping insertion in model container [2021-10-21 19:51:26,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:51:26,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:51:26,598 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_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-21 19:51:26,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:51:26,611 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:51:26,632 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_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-21 19:51:26,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:51:26,647 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:51:26,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26 WrapperNode [2021-10-21 19:51:26,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:51:26,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:51:26,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:51:26,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:51:26,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:51:26,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:51:26,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:51:26,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:51:26,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:51:26,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:51:26,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:51:26,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:51:26,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (1/1) ... [2021-10-21 19:51:26,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:51:26,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:51:26,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:51:26,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:51:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:51:26,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:51:26,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:51:26,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:51:27,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:51:27,107 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-21 19:51:27,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:27 BoogieIcfgContainer [2021-10-21 19:51:27,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:51:27,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:51:27,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:51:27,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:51:27,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:51:26" (1/3) ... [2021-10-21 19:51:27,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7712d9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:51:27, skipping insertion in model container [2021-10-21 19:51:27,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:26" (2/3) ... [2021-10-21 19:51:27,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7712d9f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:51:27, skipping insertion in model container [2021-10-21 19:51:27,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:27" (3/3) ... [2021-10-21 19:51:27,134 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-21 19:51:27,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:51:27,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:51:27,223 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:51:27,235 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=PETRI_NET, 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 [2021-10-21 19:51:27,236 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:51:27,259 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) [2021-10-21 19:51:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:51:27,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:27,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:27,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:27,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-21 19:51:27,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:27,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920011817] [2021-10-21 19:51:27,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:27,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:51:27,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:51:27,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920011817] [2021-10-21 19:51:27,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920011817] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:27,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:27,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:51:27,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428946832] [2021-10-21 19:51:27,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:51:27,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:51:27,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:51:27,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:51:27,501 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) [2021-10-21 19:51:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:27,518 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-21 19:51:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:51:27,520 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 [2021-10-21 19:51:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:27,530 INFO L225 Difference]: With dead ends: 23 [2021-10-21 19:51:27,530 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 19:51:27,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:51:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 19:51:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 19:51:27,562 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) [2021-10-21 19:51:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-21 19:51:27,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-21 19:51:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:27,565 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-21 19:51:27,565 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) [2021-10-21 19:51:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-21 19:51:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:51:27,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:27,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:27,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:51:27,567 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:27,568 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-21 19:51:27,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:51:27,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319141320] [2021-10-21 19:51:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:27,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:51:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:51:27,608 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:51:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:51:27,659 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:51:27,659 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:51:27,662 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:51:27,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:51:27,671 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:51:27,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:51:27 BoogieIcfgContainer [2021-10-21 19:51:27,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:51:27,696 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:51:27,696 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:51:27,697 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:51:27,697 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:27" (3/4) ... [2021-10-21 19:51:27,701 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:51:27,701 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:51:27,703 INFO L168 Benchmark]: Toolchain (without parser) took 1381.10 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 49.1 MB in the beginning and 89.2 MB in the end (delta: -40.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:51:27,704 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 65.2 MB in the beginning and 65.1 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:51:27,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.00 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.9 MB in the beginning and 91.4 MB in the end (delta: -42.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:27,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.03 ms. Allocated memory is still 115.3 MB. Free memory was 91.4 MB in the beginning and 89.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:51:27,707 INFO L168 Benchmark]: Boogie Preprocessor took 23.51 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 88.9 MB in the end (delta: 900.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:27,708 INFO L168 Benchmark]: RCFGBuilder took 396.26 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 80.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:27,708 INFO L168 Benchmark]: TraceAbstraction took 569.85 ms. Allocated memory is still 115.3 MB. Free memory was 79.6 MB in the beginning and 89.8 MB in the end (delta: -10.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:51:27,709 INFO L168 Benchmark]: Witness Printer took 5.19 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 89.2 MB in the end (delta: 587.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:51:27,715 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 86.0 MB. Free memory was 65.2 MB in the beginning and 65.1 MB in the end (delta: 39.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.00 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.9 MB in the beginning and 91.4 MB in the end (delta: -42.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.03 ms. Allocated memory is still 115.3 MB. Free memory was 91.4 MB in the beginning and 89.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.51 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 88.9 MB in the end (delta: 900.5 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 396.26 ms. Allocated memory is still 115.3 MB. Free memory was 88.7 MB in the beginning and 80.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 569.85 ms. Allocated memory is still 115.3 MB. Free memory was 79.6 MB in the beginning and 89.8 MB in the end (delta: -10.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.19 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 89.2 MB in the end (delta: 587.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 33. 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 449.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.7ms, AutomataDifference: 51.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.5ms SsaConstructionTime, 53.4ms SatisfiabilityAnalysisTime, 62.7ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-21 19:51:27,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/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-e943c26 [2021-10-21 19:51:30,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:51:30,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:51:30,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:51:30,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:51:30,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:51:30,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:51:30,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:51:30,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:51:30,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:51:30,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:51:30,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:51:30,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:51:30,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:51:30,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:51:30,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:51:30,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:51:30,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:51:30,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:51:30,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:51:30,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:51:30,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:51:30,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:51:30,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:51:30,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:51:30,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:51:30,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:51:30,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:51:30,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:51:31,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:51:31,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:51:31,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:51:31,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:51:31,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:51:31,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:51:31,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:51:31,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:51:31,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:51:31,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:51:31,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:51:31,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:51:31,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 19:51:31,078 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:51:31,078 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:51:31,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:51:31,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:51:31,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:51:31,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:51:31,082 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:51:31,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:51:31,083 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:51:31,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:51:31,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:51:31,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:51:31,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:51:31,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:51:31,086 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 19:51:31,087 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 19:51:31,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:51:31,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:51:31,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:51:31,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:51:31,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:51:31,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:51:31,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:51:31,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:51:31,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:51:31,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:51:31,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:51:31,091 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 19:51:31,091 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 19:51:31,092 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:51:31,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:51:31,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:51:31,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:51:31,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 19:51:31,093 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_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-10-21 19:51:31,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:51:31,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:51:31,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:51:31,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:51:31,665 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:51:31,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-21 19:51:31,756 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data/2934aff1c/b1b680ec9a024a9db4b4eabae52e2600/FLAG5405e414a [2021-10-21 19:51:32,452 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:51:32,453 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-21 19:51:32,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data/2934aff1c/b1b680ec9a024a9db4b4eabae52e2600/FLAG5405e414a [2021-10-21 19:51:32,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/data/2934aff1c/b1b680ec9a024a9db4b4eabae52e2600 [2021-10-21 19:51:32,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:51:32,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:51:32,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:51:32,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:51:32,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:51:32,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:51:32" (1/1) ... [2021-10-21 19:51:32,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b929a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:32, skipping insertion in model container [2021-10-21 19:51:32,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:51:32" (1/1) ... [2021-10-21 19:51:32,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:51:32,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:51:33,031 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_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-21 19:51:33,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:51:33,050 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:51:33,086 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_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-21 19:51:33,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:51:33,123 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:51:33,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33 WrapperNode [2021-10-21 19:51:33,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:51:33,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:51:33,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:51:33,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:51:33,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,220 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:51:33,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:51:33,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:51:33,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:51:33,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:51:33,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:51:33,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:51:33,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:51:33,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (1/1) ... [2021-10-21 19:51:33,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:51:33,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:51:33,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:51:33,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:51:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 19:51:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:51:33,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:51:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:51:40,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:51:40,479 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-21 19:51:40,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:40 BoogieIcfgContainer [2021-10-21 19:51:40,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:51:40,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:51:40,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:51:40,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:51:40,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:51:32" (1/3) ... [2021-10-21 19:51:40,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442e7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:51:40, skipping insertion in model container [2021-10-21 19:51:40,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:51:33" (2/3) ... [2021-10-21 19:51:40,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442e7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:51:40, skipping insertion in model container [2021-10-21 19:51:40,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:40" (3/3) ... [2021-10-21 19:51:40,493 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-21 19:51:40,500 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:51:40,501 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 19:51:40,563 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:51:40,571 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=PETRI_NET, 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 [2021-10-21 19:51:40,572 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 19:51:40,588 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) [2021-10-21 19:51:40,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:51:40,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:40,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:40,601 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:40,608 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-21 19:51:40,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:51:40,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636337900] [2021-10-21 19:51:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:40,623 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:51:40,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:51:40,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:51:40,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 19:51:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:51:42,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 19:51:42,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:51:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:51:42,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 19:51:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:51:42,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 19:51:42,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636337900] [2021-10-21 19:51:42,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636337900] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 19:51:42,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:51:42,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 19:51:42,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235874214] [2021-10-21 19:51:42,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:51:42,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 19:51:42,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:51:42,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:51:42,487 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) [2021-10-21 19:51:42,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:51:42,504 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-21 19:51:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:51:42,506 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 [2021-10-21 19:51:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:51:42,516 INFO L225 Difference]: With dead ends: 23 [2021-10-21 19:51:42,516 INFO L226 Difference]: Without dead ends: 9 [2021-10-21 19:51:42,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:51:42,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-21 19:51:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-21 19:51:42,554 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) [2021-10-21 19:51:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-21 19:51:42,556 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-21 19:51:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:51:42,557 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-21 19:51:42,557 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) [2021-10-21 19:51:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-21 19:51:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:51:42,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:51:42,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:51:42,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:51:42,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:51:42,773 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:51:42,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:51:42,774 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-21 19:51:42,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 19:51:42,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771734710] [2021-10-21 19:51:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:51:42,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 19:51:42,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 19:51:42,778 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 19:51:42,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 19:52:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:52:51,767 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:52:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:52:56,430 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-21 19:52:56,431 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:52:56,433 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:52:56,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:52:56,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 19:52:56,646 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:52:56,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:52:56 BoogieIcfgContainer [2021-10-21 19:52:56,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:52:56,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:52:56,701 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:52:56,702 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:52:56,703 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:51:40" (3/4) ... [2021-10-21 19:52:56,705 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:52:56,778 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:52:56,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:52:56,786 INFO L168 Benchmark]: Toolchain (without parser) took 83983.40 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 45.1 MB in the beginning and 51.3 MB in the end (delta: -6.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:56,791 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 62.9 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:52:56,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.25 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 46.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:56,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.98 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:56,797 INFO L168 Benchmark]: Boogie Preprocessor took 67.66 ms. Allocated memory is still 62.9 MB. Free memory was 44.6 MB in the beginning and 43.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:56,798 INFO L168 Benchmark]: RCFGBuilder took 7192.45 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 34.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:56,799 INFO L168 Benchmark]: TraceAbstraction took 76212.56 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 33.5 MB in the beginning and 53.4 MB in the end (delta: -19.9 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:56,800 INFO L168 Benchmark]: Witness Printer took 79.45 ms. Allocated memory is still 83.9 MB. Free memory was 53.4 MB in the beginning and 51.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:52:56,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 62.9 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.25 ms. Allocated memory is still 62.9 MB. Free memory was 44.9 MB in the beginning and 46.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.98 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.66 ms. Allocated memory is still 62.9 MB. Free memory was 44.6 MB in the beginning and 43.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7192.45 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 34.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 76212.56 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 33.5 MB in the beginning and 53.4 MB in the end (delta: -19.9 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. * Witness Printer took 79.45 ms. Allocated memory is still 83.9 MB. Free memory was 53.4 MB in the beginning and 51.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 76081.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 17.1ms, AutomataDifference: 52.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.8ms SsaConstructionTime, 70396.0ms SatisfiabilityAnalysisTime, 293.2ms 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! [2021-10-21 19:52:56,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf57495-5f3e-42b1-b174-48d01ffcd6cb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...