./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD --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_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD --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-b2eff8b [2021-10-28 23:27:09,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:27:09,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:27:09,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:27:09,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:27:09,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:27:09,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:27:09,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:27:09,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:27:09,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:27:09,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:27:09,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:27:09,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:27:09,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:27:09,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:27:09,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:27:09,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:27:09,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:27:09,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:27:09,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:27:09,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:27:09,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:27:09,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:27:09,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:27:09,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:27:09,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:27:09,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:27:09,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:27:09,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:27:09,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:27:09,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:27:09,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:27:09,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:27:09,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:27:09,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:27:09,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:27:09,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:27:09,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:27:09,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:27:09,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:27:09,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:27:09,278 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:27:09,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:27:09,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:27:09,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:27:09,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:27:09,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:27:09,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:27:09,351 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:27:09,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:27:09,352 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:27:09,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:27:09,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:27:09,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:27:09,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:27:09,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:27:09,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:27:09,355 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:27:09,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:27:09,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:27:09,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:27:09,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:27:09,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:27:09,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:27:09,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:27:09,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:27:09,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:27:09,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:27:09,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:27:09,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:27:09,359 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:27:09,362 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:27:09,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:27:09,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:27:09,363 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_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-10-28 23:27:09,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:27:09,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:27:09,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:27:09,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:27:09,750 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:27:09,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-28 23:27:09,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data/c09af7b8c/86c99e1f4d444469815dba7165338d7e/FLAG72f0bdeaa [2021-10-28 23:27:10,469 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:27:10,472 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-28 23:27:10,489 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data/c09af7b8c/86c99e1f4d444469815dba7165338d7e/FLAG72f0bdeaa [2021-10-28 23:27:10,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data/c09af7b8c/86c99e1f4d444469815dba7165338d7e [2021-10-28 23:27:10,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:27:10,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:27:10,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:10,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:27:10,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:27:10,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:10" (1/1) ... [2021-10-28 23:27:10,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6911ba86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:10, skipping insertion in model container [2021-10-28 23:27:10,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:10" (1/1) ... [2021-10-28 23:27:10,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:27:10,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:27:11,063 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_c3879ab9-0b4a-46a9-b336-9df29e687483/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-28 23:27:11,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:11,088 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:27:11,110 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_c3879ab9-0b4a-46a9-b336-9df29e687483/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-28 23:27:11,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:11,129 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:27:11,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11 WrapperNode [2021-10-28 23:27:11,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:11,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:11,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:27:11,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:27:11,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:11,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:27:11,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:27:11,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:27:11,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:27:11,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:27:11,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:27:11,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:27:11,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (1/1) ... [2021-10-28 23:27:11,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:27:11,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:11,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:11,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:27:11,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:27:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:27:11,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:27:11,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:27:11,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:27:11,632 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 23:27:11,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:11 BoogieIcfgContainer [2021-10-28 23:27:11,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:27:11,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:27:11,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:27:11,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:27:11,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:27:10" (1/3) ... [2021-10-28 23:27:11,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff46ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:27:11, skipping insertion in model container [2021-10-28 23:27:11,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:11" (2/3) ... [2021-10-28 23:27:11,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff46ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:27:11, skipping insertion in model container [2021-10-28 23:27:11,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:11" (3/3) ... [2021-10-28 23:27:11,646 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-28 23:27:11,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:27:11,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:27:11,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:27:11,740 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 [2021-10-28 23:27:11,741 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:27:11,773 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) [2021-10-28 23:27:11,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:27:11,780 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:11,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:11,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:11,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:11,789 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-28 23:27:11,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:11,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146586954] [2021-10-28 23:27:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:11,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:27:12,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:27:12,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146586954] [2021-10-28 23:27:12,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146586954] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:27:12,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:27:12,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:27:12,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927508910] [2021-10-28 23:27:12,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:27:12,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:27:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:27:12,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:27:12,083 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) [2021-10-28 23:27:12,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:12,101 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-28 23:27:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:27:12,103 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 [2021-10-28 23:27:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:12,113 INFO L225 Difference]: With dead ends: 23 [2021-10-28 23:27:12,114 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 23:27:12,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:27:12,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 23:27:12,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 23:27:12,152 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) [2021-10-28 23:27:12,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-28 23:27:12,154 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-28 23:27:12,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:12,155 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-28 23:27:12,155 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) [2021-10-28 23:27:12,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-28 23:27:12,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:27:12,156 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:12,156 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:12,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:27:12,157 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-28 23:27:12,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:27:12,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258213918] [2021-10-28 23:27:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:12,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:27:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:27:12,188 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:27:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:27:12,275 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:27:12,275 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:27:12,278 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:27:12,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:27:12,285 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:27:12,289 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:27:12,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:27:12 BoogieIcfgContainer [2021-10-28 23:27:12,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:27:12,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:27:12,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:27:12,328 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:27:12,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:11" (3/4) ... [2021-10-28 23:27:12,334 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:27:12,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:27:12,339 INFO L168 Benchmark]: Toolchain (without parser) took 1524.92 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 57.3 MB in the beginning and 63.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:12,339 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 90.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:27:12,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.61 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 57.1 MB in the beginning and 96.7 MB in the end (delta: -39.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:12,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.82 ms. Allocated memory is still 121.6 MB. Free memory was 96.7 MB in the beginning and 95.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:12,353 INFO L168 Benchmark]: Boogie Preprocessor took 42.03 ms. Allocated memory is still 121.6 MB. Free memory was 95.3 MB in the beginning and 94.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:12,354 INFO L168 Benchmark]: RCFGBuilder took 395.37 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 85.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:12,355 INFO L168 Benchmark]: TraceAbstraction took 687.63 ms. Allocated memory is still 121.6 MB. Free memory was 84.5 MB in the beginning and 63.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:27:12,355 INFO L168 Benchmark]: Witness Printer took 7.03 ms. Allocated memory is still 121.6 MB. Free memory was 63.5 MB in the beginning and 63.1 MB in the end (delta: 325.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:27:12,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 90.2 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.61 ms. Allocated memory was 90.2 MB in the beginning and 121.6 MB in the end (delta: 31.5 MB). Free memory was 57.1 MB in the beginning and 96.7 MB in the end (delta: -39.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.82 ms. Allocated memory is still 121.6 MB. Free memory was 96.7 MB in the beginning and 95.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.03 ms. Allocated memory is still 121.6 MB. Free memory was 95.3 MB in the beginning and 94.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 395.37 ms. Allocated memory is still 121.6 MB. Free memory was 94.2 MB in the beginning and 85.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 687.63 ms. Allocated memory is still 121.6 MB. Free memory was 84.5 MB in the beginning and 63.5 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 7.03 ms. Allocated memory is still 121.6 MB. Free memory was 63.5 MB in the beginning and 63.1 MB in the end (delta: 325.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 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: 0.5s, 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, 2 GetRequests, 2 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, 0.0s SatisfiabilityAnalysisTime, 0.1s 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 [2021-10-28 23:27:12,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/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 [2021-10-28 23:27:15,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:27:15,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:27:15,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:27:15,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:27:15,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:27:15,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:27:15,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:27:15,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:27:15,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:27:15,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:27:15,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:27:15,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:27:15,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:27:15,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:27:15,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:27:15,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:27:15,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:27:15,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:27:15,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:27:15,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:27:15,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:27:15,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:27:15,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:27:15,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:27:15,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:27:15,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:27:15,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:27:15,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:27:15,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:27:15,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:27:15,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:27:15,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:27:15,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:27:15,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:27:15,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:27:15,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:27:15,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:27:15,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:27:15,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:27:15,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:27:15,804 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:27:15,861 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:27:15,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:27:15,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:27:15,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:27:15,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:27:15,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:27:15,867 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:27:15,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:27:15,868 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:27:15,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:27:15,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:27:15,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:27:15,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:27:15,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:27:15,872 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:27:15,872 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:27:15,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:27:15,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:27:15,873 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:27:15,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:27:15,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:27:15,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:27:15,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:27:15,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:27:15,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:27:15,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:27:15,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:27:15,877 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:27:15,878 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:27:15,878 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:27:15,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:27:15,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:27:15,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:27:15,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:27:15,880 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_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-10-28 23:27:16,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:27:16,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:27:16,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:27:16,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:27:16,385 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:27:16,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-28 23:27:16,472 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data/26f6d06ae/49152bd3d5e0430aadd81676b65fb673/FLAG71a0b2875 [2021-10-28 23:27:17,095 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:27:17,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-28 23:27:17,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data/26f6d06ae/49152bd3d5e0430aadd81676b65fb673/FLAG71a0b2875 [2021-10-28 23:27:17,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/data/26f6d06ae/49152bd3d5e0430aadd81676b65fb673 [2021-10-28 23:27:17,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:27:17,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:27:17,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:17,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:27:17,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:27:17,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2261aba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17, skipping insertion in model container [2021-10-28 23:27:17,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:27:17,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:27:17,696 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_c3879ab9-0b4a-46a9-b336-9df29e687483/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-28 23:27:17,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:17,724 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:27:17,768 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_c3879ab9-0b4a-46a9-b336-9df29e687483/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-28 23:27:17,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:27:17,834 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:27:17,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17 WrapperNode [2021-10-28 23:27:17,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:27:17,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:17,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:27:17,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:27:17,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:27:17,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:27:17,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:27:17,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:27:17,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:27:17,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:27:17,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:27:17,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:27:17,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (1/1) ... [2021-10-28 23:27:17,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:27:17,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:27:18,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:27:18,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:27:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:27:18,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:27:18,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:27:18,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:27:25,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:27:25,047 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 23:27:25,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:25 BoogieIcfgContainer [2021-10-28 23:27:25,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:27:25,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:27:25,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:27:25,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:27:25,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:27:17" (1/3) ... [2021-10-28 23:27:25,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c13ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:27:25, skipping insertion in model container [2021-10-28 23:27:25,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:27:17" (2/3) ... [2021-10-28 23:27:25,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50c13ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:27:25, skipping insertion in model container [2021-10-28 23:27:25,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:25" (3/3) ... [2021-10-28 23:27:25,060 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-28 23:27:25,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:27:25,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:27:25,129 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:27:25,137 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 [2021-10-28 23:27:25,138 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:27:25,154 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) [2021-10-28 23:27:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:27:25,160 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:25,161 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:25,162 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:25,169 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-28 23:27:25,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:27:25,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408956044] [2021-10-28 23:27:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:25,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:27:25,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:27:25,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:27:25,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:27:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:27:26,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:27:26,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:27:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:27:26,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:27:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:27:26,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:27:26,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408956044] [2021-10-28 23:27:26,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408956044] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:27:26,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:27:26,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:27:27,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174478425] [2021-10-28 23:27:27,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:27:27,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:27:27,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:27:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:27:27,028 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) [2021-10-28 23:27:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:27:27,045 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-28 23:27:27,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:27:27,047 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 [2021-10-28 23:27:27,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:27:27,057 INFO L225 Difference]: With dead ends: 23 [2021-10-28 23:27:27,058 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 23:27:27,061 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 [2021-10-28 23:27:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 23:27:27,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 23:27:27,094 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) [2021-10-28 23:27:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-28 23:27:27,096 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-28 23:27:27,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:27:27,097 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-28 23:27:27,098 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) [2021-10-28 23:27:27,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-28 23:27:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 23:27:27,099 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:27:27,099 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:27:27,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 23:27:27,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:27:27,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:27:27,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:27:27,316 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-28 23:27:27,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:27:27,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133327005] [2021-10-28 23:27:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:27:27,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:27:27,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:27:27,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:27:27,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:28:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:28:32,716 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:28:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:28:37,251 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:28:37,251 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:28:37,253 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:28:37,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:28:37,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:28:37,460 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:28:37,463 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:28:37,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:28:37 BoogieIcfgContainer [2021-10-28 23:28:37,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:28:37,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:28:37,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:28:37,495 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:28:37,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:27:25" (3/4) ... [2021-10-28 23:28:37,499 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:28:37,546 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:28:37,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:28:37,549 INFO L168 Benchmark]: Toolchain (without parser) took 80147.92 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 45.7 MB in the beginning and 51.8 MB in the end (delta: -6.1 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:37,550 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 65.0 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:28:37,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.07 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 49.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:37,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.58 ms. Allocated memory is still 65.0 MB. Free memory was 49.0 MB in the beginning and 47.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:37,552 INFO L168 Benchmark]: Boogie Preprocessor took 32.39 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 46.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:28:37,553 INFO L168 Benchmark]: RCFGBuilder took 7108.75 ms. Allocated memory is still 65.0 MB. Free memory was 46.2 MB in the beginning and 37.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:37,554 INFO L168 Benchmark]: TraceAbstraction took 72441.22 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 36.5 MB in the beginning and 53.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:37,555 INFO L168 Benchmark]: Witness Printer took 52.25 ms. Allocated memory is still 88.1 MB. Free memory was 53.6 MB in the beginning and 51.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:28:37,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 65.0 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 432.07 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 49.0 MB in the end (delta: -3.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.58 ms. Allocated memory is still 65.0 MB. Free memory was 49.0 MB in the beginning and 47.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.39 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 46.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 7108.75 ms. Allocated memory is still 65.0 MB. Free memory was 46.2 MB in the beginning and 37.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 72441.22 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 36.5 MB in the beginning and 53.6 MB in the end (delta: -17.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Witness Printer took 52.25 ms. Allocated memory is still 88.1 MB. Free memory was 53.6 MB in the beginning and 51.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 72.3s, 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, 66.7s 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! [2021-10-28 23:28:37,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3879ab9-0b4a-46a9-b336-9df29e687483/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...