./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.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_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg --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 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea .................................................................................................................................................................................................................................................................................... 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_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg --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 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea .................................................................................................................................................................................................................................................................................................. 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 09:48:51,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:48:51,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:48:51,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:48:51,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:48:51,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:48:51,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:48:51,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:48:51,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:48:51,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:48:51,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:48:51,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:48:51,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:48:51,699 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:48:51,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:48:51,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:48:51,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:48:51,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:48:51,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:48:51,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:48:51,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:48:51,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:48:51,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:48:51,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:48:51,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:48:51,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:48:51,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:48:51,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:48:51,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:48:51,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:48:51,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:48:51,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:48:51,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:48:51,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:48:51,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:48:51,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:48:51,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:48:51,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:48:51,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:48:51,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:48:51,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:48:51,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:48:51,797 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:48:51,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:48:51,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:48:51,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:48:51,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:48:51,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:48:51,805 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:48:51,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:48:51,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:48:51,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:48:51,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:48:51,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:48:51,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:48:51,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:48:51,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:48:51,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:48:51,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:48:51,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:48:51,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:48:51,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:48:51,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:48:51,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:48:51,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:48:51,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:48:51,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:48:51,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:48:51,811 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:48:51,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:48:51,812 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:48:51,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:48:51,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:48:51,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:48:51,815 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_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea [2021-10-28 09:48:52,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:48:52,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:48:52,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:48:52,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:48:52,128 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:48:52,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-28 09:48:52,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data/206426402/18956ec4b2f1428f9034694ffd9aec23/FLAGf22db7058 [2021-10-28 09:48:52,640 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:48:52,641 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-28 09:48:52,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data/206426402/18956ec4b2f1428f9034694ffd9aec23/FLAGf22db7058 [2021-10-28 09:48:53,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data/206426402/18956ec4b2f1428f9034694ffd9aec23 [2021-10-28 09:48:53,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:48:53,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:48:53,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:53,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:48:53,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:48:53,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ebaeb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53, skipping insertion in model container [2021-10-28 09:48:53,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:48:53,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:48:53,270 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_377771cd-d9cd-4949-99f3-56566c043d9c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-28 09:48:53,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:53,282 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:48:53,301 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_377771cd-d9cd-4949-99f3-56566c043d9c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-28 09:48:53,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:53,316 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:48:53,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53 WrapperNode [2021-10-28 09:48:53,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:53,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:53,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:48:53,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:48:53,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:53,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:48:53,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:48:53,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:48:53,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:48:53,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:48:53,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:48:53,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:48:53,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (1/1) ... [2021-10-28 09:48:53,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:48:53,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:53,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:53,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:48:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:48:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:48:53,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:48:53,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:48:53,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:48:53,694 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 09:48:53,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:53 BoogieIcfgContainer [2021-10-28 09:48:53,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:48:53,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:48:53,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:48:53,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:48:53,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:48:53" (1/3) ... [2021-10-28 09:48:53,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50187a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:48:53, skipping insertion in model container [2021-10-28 09:48:53,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:53" (2/3) ... [2021-10-28 09:48:53,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50187a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:48:53, skipping insertion in model container [2021-10-28 09:48:53,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:53" (3/3) ... [2021-10-28 09:48:53,718 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-10-28 09:48:53,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:48:53,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:48:53,784 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:48:53,791 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 09:48:53,796 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:48:53,813 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 09:48:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:48:53,818 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:53,819 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:53,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:48:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-28 09:48:53,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:53,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595214387] [2021-10-28 09:48:53,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:53,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:48:53,979 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 09:48:53,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:48:53,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595214387] [2021-10-28 09:48:53,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595214387] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:48:53,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:48:53,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:48:53,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858231499] [2021-10-28 09:48:54,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:48:54,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:48:54,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:48:54,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:48:54,026 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 09:48:54,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:48:54,039 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-28 09:48:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:48:54,040 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 09:48:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:48:54,053 INFO L225 Difference]: With dead ends: 23 [2021-10-28 09:48:54,053 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 09:48:54,057 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 09:48:54,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 09:48:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 09:48:54,085 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 09:48:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-28 09:48:54,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-28 09:48:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:48:54,087 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-28 09:48:54,087 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 09:48:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-28 09:48:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:48:54,088 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:48:54,088 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:48:54,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:48:54,088 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:48:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:48:54,089 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-28 09:48:54,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:48:54,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073738730] [2021-10-28 09:48:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:48:54,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:48:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:54,114 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:48:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:48:54,156 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:48:54,157 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:48:54,159 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:48:54,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:48:54,165 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 09:48:54,168 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:48:54,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:48:54 BoogieIcfgContainer [2021-10-28 09:48:54,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:48:54,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:48:54,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:48:54,191 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:48:54,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:48:53" (3/4) ... [2021-10-28 09:48:54,195 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:48:54,195 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:48:54,197 INFO L168 Benchmark]: Toolchain (without parser) took 1147.61 ms. Allocated memory is still 104.9 MB. Free memory was 66.4 MB in the beginning and 45.6 MB in the end (delta: 20.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:54,198 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 82.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:54,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.50 ms. Allocated memory is still 104.9 MB. Free memory was 66.2 MB in the beginning and 79.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:54,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.26 ms. Allocated memory is still 104.9 MB. Free memory was 79.6 MB in the beginning and 78.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:54,200 INFO L168 Benchmark]: Boogie Preprocessor took 45.21 ms. Allocated memory is still 104.9 MB. Free memory was 78.2 MB in the beginning and 77.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:54,201 INFO L168 Benchmark]: RCFGBuilder took 289.01 ms. Allocated memory is still 104.9 MB. Free memory was 77.0 MB in the beginning and 68.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:54,202 INFO L168 Benchmark]: TraceAbstraction took 491.60 ms. Allocated memory is still 104.9 MB. Free memory was 67.8 MB in the beginning and 46.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:48:54,202 INFO L168 Benchmark]: Witness Printer took 4.76 ms. Allocated memory is still 104.9 MB. Free memory was 46.0 MB in the beginning and 45.6 MB in the end (delta: 445.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:48:54,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 82.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.50 ms. Allocated memory is still 104.9 MB. Free memory was 66.2 MB in the beginning and 79.6 MB in the end (delta: -13.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.26 ms. Allocated memory is still 104.9 MB. Free memory was 79.6 MB in the beginning and 78.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.21 ms. Allocated memory is still 104.9 MB. Free memory was 78.2 MB in the beginning and 77.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 289.01 ms. Allocated memory is still 104.9 MB. Free memory was 77.0 MB in the beginning and 68.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 491.60 ms. Allocated memory is still 104.9 MB. Free memory was 67.8 MB in the beginning and 46.0 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.76 ms. Allocated memory is still 104.9 MB. Free memory was 46.0 MB in the beginning and 45.6 MB in the end (delta: 445.3 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: 0.3s, 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, 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, 0.0s 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 09:48:54,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/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 09:48:56,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:48:56,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:48:56,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:48:56,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:48:56,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:48:56,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:48:56,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:48:56,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:48:56,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:48:56,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:48:56,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:48:56,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:48:56,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:48:56,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:48:56,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:48:56,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:48:56,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:48:56,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:48:56,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:48:56,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:48:56,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:48:56,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:48:56,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:48:56,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:48:56,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:48:56,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:48:56,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:48:56,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:48:56,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:48:56,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:48:56,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:48:56,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:48:56,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:48:56,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:48:56,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:48:56,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:48:56,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:48:56,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:48:56,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:48:56,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:48:56,771 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:48:56,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:48:56,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:48:56,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:48:56,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:48:56,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:48:56,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:48:56,820 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:48:56,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:48:56,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:48:56,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:48:56,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:48:56,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:48:56,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:48:56,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:48:56,823 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:48:56,823 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:48:56,823 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:48:56,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:48:56,823 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:48:56,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:48:56,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:48:56,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:48:56,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:48:56,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:48:56,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:48:56,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:48:56,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:48:56,826 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:48:56,826 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:48:56,826 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:48:56,826 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:48:56,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:48:56,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:48:56,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:48:56,827 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_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea [2021-10-28 09:48:57,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:48:57,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:48:57,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:48:57,259 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:48:57,260 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:48:57,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-28 09:48:57,340 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data/d4609ceb8/a6b5e6f73439419c917b94cf4f3ecf11/FLAGda45a4b89 [2021-10-28 09:48:57,881 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:48:57,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-10-28 09:48:57,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data/d4609ceb8/a6b5e6f73439419c917b94cf4f3ecf11/FLAGda45a4b89 [2021-10-28 09:48:58,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/data/d4609ceb8/a6b5e6f73439419c917b94cf4f3ecf11 [2021-10-28 09:48:58,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:48:58,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:48:58,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:58,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:48:58,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:48:58,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc13678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58, skipping insertion in model container [2021-10-28 09:48:58,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:48:58,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:48:58,406 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_377771cd-d9cd-4949-99f3-56566c043d9c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-28 09:48:58,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:58,421 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:48:58,441 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_377771cd-d9cd-4949-99f3-56566c043d9c/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-10-28 09:48:58,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:48:58,486 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:48:58,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58 WrapperNode [2021-10-28 09:48:58,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:48:58,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:58,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:48:58,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:48:58,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:48:58,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:48:58,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:48:58,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:48:58,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:48:58,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:48:58,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:48:58,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:48:58,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (1/1) ... [2021-10-28 09:48:58,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:48:58,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:48:58,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:48:58,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:48:58,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:48:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:48:58,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:48:58,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:49:04,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:49:04,847 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-28 09:49:04,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:04 BoogieIcfgContainer [2021-10-28 09:49:04,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:49:04,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:49:04,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:49:04,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:49:04,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:48:58" (1/3) ... [2021-10-28 09:49:04,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2d7f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:49:04, skipping insertion in model container [2021-10-28 09:49:04,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:48:58" (2/3) ... [2021-10-28 09:49:04,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2d7f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:49:04, skipping insertion in model container [2021-10-28 09:49:04,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:04" (3/3) ... [2021-10-28 09:49:04,857 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-10-28 09:49:04,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:49:04,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:49:04,908 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:49:04,914 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 09:49:04,915 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:49:04,928 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 09:49:04,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:49:04,933 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:04,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:04,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:49:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-28 09:49:04,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:04,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093759036] [2021-10-28 09:49:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:04,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:04,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:04,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:04,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:49:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:49:06,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 09:49:06,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:49:06,265 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 09:49:06,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:49:06,345 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 09:49:06,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:49:06,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093759036] [2021-10-28 09:49:06,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093759036] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:49:06,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:49:06,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:49:06,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667176968] [2021-10-28 09:49:06,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:49:06,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:49:06,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:49:06,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:49:06,384 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 09:49:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:49:06,397 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-28 09:49:06,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:49:06,399 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 09:49:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:49:06,409 INFO L225 Difference]: With dead ends: 23 [2021-10-28 09:49:06,409 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 09:49:06,412 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 09:49:06,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 09:49:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 09:49:06,443 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 09:49:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-28 09:49:06,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-28 09:49:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:49:06,445 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-28 09:49:06,446 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 09:49:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-28 09:49:06,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:49:06,447 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:49:06,447 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:49:06,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:49:06,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:06,664 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:49:06,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:49:06,665 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-28 09:49:06,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:49:06,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749228281] [2021-10-28 09:49:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:49:06,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:49:06,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:49:06,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:49:06,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:49:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:49:09,697 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:49:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:49:15,077 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:49:15,077 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:49:15,079 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:49:15,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 09:49:15,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:49:15,285 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 09:49:15,287 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:49:15,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:49:15 BoogieIcfgContainer [2021-10-28 09:49:15,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:49:15,329 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:49:15,329 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:49:15,330 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:49:15,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:49:04" (3/4) ... [2021-10-28 09:49:15,332 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:49:15,398 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:49:15,398 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:49:15,400 INFO L168 Benchmark]: Toolchain (without parser) took 17176.25 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 42.9 MB in the beginning and 51.1 MB in the end (delta: -8.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,401 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:49:15,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.82 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 46.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.86 ms. Allocated memory is still 62.9 MB. Free memory was 46.3 MB in the beginning and 44.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,402 INFO L168 Benchmark]: Boogie Preprocessor took 28.18 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 43.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:49:15,403 INFO L168 Benchmark]: RCFGBuilder took 6270.83 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 34.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,404 INFO L168 Benchmark]: TraceAbstraction took 10476.69 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 33.6 MB in the beginning and 52.9 MB in the end (delta: -19.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,404 INFO L168 Benchmark]: Witness Printer took 69.91 ms. Allocated memory is still 88.1 MB. Free memory was 52.9 MB in the beginning and 51.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:49:15,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 62.9 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.82 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 46.4 MB in the end (delta: -3.8 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.86 ms. Allocated memory is still 62.9 MB. Free memory was 46.3 MB in the beginning and 44.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.18 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 43.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6270.83 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 34.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10476.69 ms. Allocated memory was 62.9 MB in the beginning and 88.1 MB in the end (delta: 25.2 MB). Free memory was 33.6 MB in the beginning and 52.9 MB in the end (delta: -19.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 69.91 ms. Allocated memory is still 88.1 MB. Free memory was 52.9 MB in the beginning and 51.1 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: 10.3s, 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, 4.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:49:15,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_377771cd-d9cd-4949-99f3-56566c043d9c/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...