./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c --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_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/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_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/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_999340bb-3993-483e-9265-2dfb94b1a9e9/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 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 ............................................................................................................................................................................................................................................................................................................. 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_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/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_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/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_999340bb-3993-483e-9265-2dfb94b1a9e9/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 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:43:21,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:43:21,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:43:21,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:43:21,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:43:21,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:43:21,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:43:21,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:43:21,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:43:21,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:43:21,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:43:21,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:43:21,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:43:21,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:43:21,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:43:21,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:43:21,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:43:21,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:43:21,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:43:21,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:43:21,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:43:21,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:43:21,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:43:21,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:43:21,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:43:21,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:43:21,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:43:21,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:43:21,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:43:21,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:43:21,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:43:21,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:43:21,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:43:21,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:43:21,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:43:21,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:43:21,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:43:21,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:43:21,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:43:21,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:43:21,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:43:21,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:43:21,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:43:21,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:43:21,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:43:21,969 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:43:21,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:43:21,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:43:21,972 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:43:21,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:43:21,973 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:43:21,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:43:21,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:43:21,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:43:21,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:43:21,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:43:21,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:43:21,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:43:21,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:43:21,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:43:21,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:43:21,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:43:21,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:43:21,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:43:21,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:43:21,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:43:21,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:43:21,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:43:21,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:43:21,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:43:21,980 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:43:21,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:43:21,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:43:21,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:43:21,983 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_999340bb-3993-483e-9265-2dfb94b1a9e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2021-10-28 09:43:22,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:43:22,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:43:22,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:43:22,389 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:43:22,390 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:43:22,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-28 09:43:22,483 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data/cdb02f8ac/997a5520fc1a4a2ab601c05a4cc38961/FLAG22f9965f5 [2021-10-28 09:43:23,034 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:43:23,034 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-28 09:43:23,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data/cdb02f8ac/997a5520fc1a4a2ab601c05a4cc38961/FLAG22f9965f5 [2021-10-28 09:43:23,398 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data/cdb02f8ac/997a5520fc1a4a2ab601c05a4cc38961 [2021-10-28 09:43:23,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:43:23,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:43:23,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:43:23,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:43:23,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:43:23,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9f3d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23, skipping insertion in model container [2021-10-28 09:43:23,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:43:23,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:43:23,634 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_999340bb-3993-483e-9265-2dfb94b1a9e9/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-28 09:43:23,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:43:23,674 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:43:23,690 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_999340bb-3993-483e-9265-2dfb94b1a9e9/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-28 09:43:23,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:43:23,718 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:43:23,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23 WrapperNode [2021-10-28 09:43:23,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:43:23,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:43:23,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:43:23,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:43:23,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:43:23,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:43:23,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:43:23,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:43:23,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:43:23,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:43:23,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:43:23,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:43:23,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (1/1) ... [2021-10-28 09:43:23,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:43:23,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:23,855 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:23,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:43:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:43:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:43:23,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:43:23,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:43:24,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:43:24,150 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 09:43:24,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:43:24 BoogieIcfgContainer [2021-10-28 09:43:24,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:43:24,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:43:24,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:43:24,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:43:24,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:43:23" (1/3) ... [2021-10-28 09:43:24,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d290840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:43:24, skipping insertion in model container [2021-10-28 09:43:24,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:23" (2/3) ... [2021-10-28 09:43:24,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d290840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:43:24, skipping insertion in model container [2021-10-28 09:43:24,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:43:24" (3/3) ... [2021-10-28 09:43:24,171 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-10-28 09:43:24,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:43:24,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:43:24,224 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:43:24,230 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 09:43:24,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:43:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 09:43:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:43:24,265 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:43:24,266 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:24,267 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:43:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-28 09:43:24,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:24,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368886971] [2021-10-28 09:43:24,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:24,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:24,455 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 09:43:24,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:24,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368886971] [2021-10-28 09:43:24,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368886971] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:43:24,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:43:24,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:43:24,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895609950] [2021-10-28 09:43:24,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:43:24,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:43:24,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:43:24,479 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 09:43:24,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:24,493 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-28 09:43:24,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:43:24,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-10-28 09:43:24,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:43:24,502 INFO L225 Difference]: With dead ends: 34 [2021-10-28 09:43:24,502 INFO L226 Difference]: Without dead ends: 14 [2021-10-28 09:43:24,508 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 09:43:24,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-28 09:43:24,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 09:43:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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 09:43:24,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-28 09:43:24,540 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-28 09:43:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:43:24,542 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 09:43:24,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 09:43:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-28 09:43:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:43:24,544 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:43:24,544 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:24,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:43:24,545 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:43:24,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:24,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-28 09:43:24,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:24,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936063496] [2021-10-28 09:43:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:24,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:24,612 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:24,670 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:24,670 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:43:24,672 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:43:24,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:43:24,676 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 09:43:24,678 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:43:24,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:43:24 BoogieIcfgContainer [2021-10-28 09:43:24,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:43:24,702 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:43:24,702 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:43:24,702 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:43:24,702 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:43:24" (3/4) ... [2021-10-28 09:43:24,705 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:43:24,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:43:24,707 INFO L168 Benchmark]: Toolchain (without parser) took 1303.69 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 55.8 MB in the beginning and 70.2 MB in the end (delta: -14.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:24,708 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:24,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.41 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 55.6 MB in the beginning and 107.1 MB in the end (delta: -51.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:24,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.34 ms. Allocated memory is still 132.1 MB. Free memory was 107.1 MB in the beginning and 105.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:24,710 INFO L168 Benchmark]: Boogie Preprocessor took 55.37 ms. Allocated memory is still 132.1 MB. Free memory was 105.8 MB in the beginning and 104.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:24,710 INFO L168 Benchmark]: RCFGBuilder took 328.37 ms. Allocated memory is still 132.1 MB. Free memory was 104.4 MB in the beginning and 93.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:24,711 INFO L168 Benchmark]: TraceAbstraction took 547.88 ms. Allocated memory is still 132.1 MB. Free memory was 93.3 MB in the beginning and 70.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:24,712 INFO L168 Benchmark]: Witness Printer took 3.55 ms. Allocated memory is still 132.1 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:24,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 72.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.41 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 55.6 MB in the beginning and 107.1 MB in the end (delta: -51.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.34 ms. Allocated memory is still 132.1 MB. Free memory was 107.1 MB in the beginning and 105.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.37 ms. Allocated memory is still 132.1 MB. Free memory was 105.8 MB in the beginning and 104.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 328.37 ms. Allocated memory is still 132.1 MB. Free memory was 104.4 MB in the beginning and 93.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 547.88 ms. Allocated memory is still 132.1 MB. Free memory was 93.3 MB in the beginning and 70.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.55 ms. Allocated memory is still 132.1 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38. Possible FailurePath: [L15] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. VAL [_EPS=1/1000000] [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) VAL [_EPS=1/1000000] [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; VAL [_EPS=1/1000000] [L21] COND TRUE Input <= 1.0 [L21] xn = 1.0 VAL [_EPS=1/1000000] [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [_EPS=1/1000000] [L28] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L38] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L51] r = SqrtR(dd) [L13] COND TRUE !(cond) VAL [_EPS=1/1000000] [L13] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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: 20 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=18occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 09:43:24,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/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 09:43:27,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:43:27,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:43:27,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:43:27,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:43:27,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:43:27,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:43:27,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:43:27,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:43:27,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:43:27,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:43:27,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:43:27,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:43:27,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:43:27,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:43:27,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:43:27,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:43:27,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:43:27,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:43:27,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:43:27,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:43:27,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:43:27,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:43:27,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:43:27,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:43:27,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:43:27,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:43:27,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:43:27,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:43:27,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:43:27,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:43:27,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:43:27,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:43:27,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:43:27,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:43:27,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:43:27,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:43:27,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:43:27,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:43:27,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:43:27,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:43:27,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:43:27,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:43:27,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:43:27,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:43:27,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:43:27,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:43:27,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:43:27,452 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:43:27,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:43:27,453 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:43:27,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:43:27,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:43:27,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:43:27,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:43:27,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:43:27,454 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:43:27,457 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:43:27,457 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:43:27,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:43:27,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:43:27,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:43:27,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:43:27,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:43:27,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:43:27,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:43:27,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:43:27,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:43:27,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:43:27,461 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:43:27,462 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:43:27,462 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:43:27,462 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:43:27,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:43:27,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:43:27,463 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:43:27,463 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_999340bb-3993-483e-9265-2dfb94b1a9e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8967790177fc14e8157cff1ce1fb723d3ab55513216099f6dbb82db8bc4d5837 [2021-10-28 09:43:27,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:43:27,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:43:27,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:43:28,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:43:28,002 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:43:28,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-28 09:43:28,100 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data/415de5f2a/aae7f2c8408644958721e7dbd23b83e5/FLAGad0d320ef [2021-10-28 09:43:28,792 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:43:28,792 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c [2021-10-28 09:43:28,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data/415de5f2a/aae7f2c8408644958721e7dbd23b83e5/FLAGad0d320ef [2021-10-28 09:43:29,118 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/data/415de5f2a/aae7f2c8408644958721e7dbd23b83e5 [2021-10-28 09:43:29,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:43:29,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:43:29,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:43:29,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:43:29,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:43:29,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507d4a9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29, skipping insertion in model container [2021-10-28 09:43:29,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:43:29,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:43:29,334 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_999340bb-3993-483e-9265-2dfb94b1a9e9/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-28 09:43:29,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:43:29,376 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:43:29,392 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_999340bb-3993-483e-9265-2dfb94b1a9e9/sv-benchmarks/c/float-benchs/sqrt_biNewton_pseudoconstant.c[570,583] [2021-10-28 09:43:29,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:43:29,446 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:43:29,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29 WrapperNode [2021-10-28 09:43:29,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:43:29,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:43:29,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:43:29,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:43:29,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:43:29,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:43:29,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:43:29,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:43:29,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:43:29,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:43:29,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:43:29,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:43:29,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (1/1) ... [2021-10-28 09:43:29,603 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:43:29,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:29,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:29,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:43:29,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:43:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:43:29,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:43:29,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:43:39,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:43:39,955 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-28 09:43:39,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:43:39 BoogieIcfgContainer [2021-10-28 09:43:39,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:43:39,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:43:39,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:43:39,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:43:39,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:43:29" (1/3) ... [2021-10-28 09:43:39,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb65917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:43:39, skipping insertion in model container [2021-10-28 09:43:39,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:29" (2/3) ... [2021-10-28 09:43:39,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb65917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:43:39, skipping insertion in model container [2021-10-28 09:43:39,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:43:39" (3/3) ... [2021-10-28 09:43:39,968 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_biNewton_pseudoconstant.c [2021-10-28 09:43:39,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:43:39,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:43:40,027 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:43:40,034 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 09:43:40,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:43:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 09:43:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:43:40,058 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:43:40,059 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:40,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:43:40,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:40,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-10-28 09:43:40,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:43:40,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780441239] [2021-10-28 09:43:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:40,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:43:40,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:43:40,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:43:40,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:43:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:41,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 09:43:41,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:41,927 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 09:43:41,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:43:42,022 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 09:43:42,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:43:42,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780441239] [2021-10-28 09:43:42,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780441239] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:43:42,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:43:42,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:43:42,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203432209] [2021-10-28 09:43:42,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:43:42,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:43:42,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:43:42,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:43:42,049 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 09:43:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:42,063 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-10-28 09:43:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:43:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-10-28 09:43:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:43:42,073 INFO L225 Difference]: With dead ends: 34 [2021-10-28 09:43:42,073 INFO L226 Difference]: Without dead ends: 14 [2021-10-28 09:43:42,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 09:43:42,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-28 09:43:42,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 09:43:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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 09:43:42,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-28 09:43:42,109 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-10-28 09:43:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:43:42,110 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-28 09:43:42,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 09:43:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-28 09:43:42,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:43:42,111 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:43:42,111 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:42,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:43:42,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:43:42,327 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:43:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-10-28 09:43:42,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:43:42,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136207506] [2021-10-28 09:43:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:42,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:43:42,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:43:42,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:43:42,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:43:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:43,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:43:43,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:43:44,847 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 09:43:44,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:43:55,504 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from false [2021-10-28 09:43:57,575 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from true [2021-10-28 09:44:12,126 WARN L207 SmtUtils]: Spent 6.29 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2021-10-28 09:44:17,106 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 09:44:17,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:44:17,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136207506] [2021-10-28 09:44:17,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136207506] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:44:17,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:44:17,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 09:44:17,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202817068] [2021-10-28 09:44:17,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:44:17,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:44:17,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:44:17,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=27, Unknown=2, NotChecked=10, Total=56 [2021-10-28 09:44:17,112 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 09:44:20,405 WARN L860 $PredicateComparison]: unable to prove that (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-10-28 09:44:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:44:43,421 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-10-28 09:44:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:44:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 12 [2021-10-28 09:44:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:44:43,500 INFO L225 Difference]: With dead ends: 32 [2021-10-28 09:44:43,500 INFO L226 Difference]: Without dead ends: 20 [2021-10-28 09:44:43,501 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=19, Invalid=28, Unknown=3, NotChecked=22, Total=72 [2021-10-28 09:44:43,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-28 09:44:43,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-28 09:44:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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 09:44:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-28 09:44:43,506 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-10-28 09:44:43,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:44:43,507 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-28 09:44:43,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 09:44:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-28 09:44:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:44:43,508 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:44:43,508 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:44:43,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 09:44:43,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:44:43,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:44:43,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:44:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-10-28 09:44:43,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:44:43,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290764654] [2021-10-28 09:44:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:44:43,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:44:43,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:44:43,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:44:43,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:44:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:44:46,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:44:46,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:45:07,326 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xn~0)))) (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 09:45:47,626 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from false [2021-10-28 09:45:49,698 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from true [2021-10-28 09:46:17,813 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from false [2021-10-28 09:46:19,880 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from true [2021-10-28 09:46:25,590 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:46:31,182 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:46:36,830 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:46:42,523 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:46:48,173 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 09:46:53,402 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:46:55,880 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse4 .cse4))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.gt .cse1 (fp.mul c_currentRoundingMode .cse2 .cse3))) (not (fp.lt .cse1 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse4)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 09:47:01,657 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:47:09,787 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:47:15,437 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:47:21,054 WARN L207 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:47:26,721 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:47:32,350 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 09:47:37,976 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 09:47:43,596 WARN L207 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 09:47:51,626 WARN L207 SmtUtils]: Spent 5.61 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:47:59,638 WARN L207 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:48:05,306 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:48:10,946 WARN L207 SmtUtils]: Spent 5.64 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:48:16,580 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:48:21,865 WARN L207 SmtUtils]: Spent 5.28 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:48:27,571 WARN L207 SmtUtils]: Spent 5.70 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 09:48:35,666 WARN L207 SmtUtils]: Spent 5.66 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:48:41,333 WARN L207 SmtUtils]: Spent 5.67 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:48:47,064 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:48:52,796 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:48:58,168 WARN L207 SmtUtils]: Spent 5.37 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:49:03,957 WARN L207 SmtUtils]: Spent 5.79 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 09:49:09,744 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:49:15,543 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:49:21,430 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:49:27,398 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 09:49:33,389 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:49:39,331 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:49:45,341 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:49:51,387 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:49:57,369 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:50:03,453 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 09:50:09,421 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:50:15,416 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:50:21,377 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 09:50:27,249 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 09:50:33,188 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 09:50:39,112 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 09:50:41,608 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from false [2021-10-28 09:50:43,900 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from true [2021-10-28 09:50:52,283 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:51:00,748 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:51:06,551 WARN L207 SmtUtils]: Spent 5.80 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:51:12,450 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:51:18,437 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:51:23,915 WARN L207 SmtUtils]: Spent 5.48 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:51:29,890 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 09:51:38,316 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:51:44,277 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:51:50,251 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:51:56,207 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:52:01,674 WARN L207 SmtUtils]: Spent 5.47 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:52:07,678 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 09:52:13,649 WARN L207 SmtUtils]: Spent 5.97 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:52:19,649 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:52:25,590 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-28 09:52:31,518 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 6 [2021-10-28 09:52:37,428 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:52:43,441 WARN L207 SmtUtils]: Spent 6.01 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:52:45,930 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse1 .cse5))) (or (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))))))))) is different from false [2021-10-28 09:52:48,233 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse1 .cse5))) (or (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))))))))) is different from true [2021-10-28 09:52:48,233 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 09:52:48,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:53:00,901 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) is different from false [2021-10-28 09:53:03,117 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) is different from true [2021-10-28 09:53:20,118 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xnp1~0))) (and (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (not (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32)))) is different from false [2021-10-28 09:53:26,383 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:53:31,556 WARN L207 SmtUtils]: Spent 5.17 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:53:36,711 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 09:53:41,910 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification that was a NOOP. DAG size: 10 [2021-10-28 09:53:44,212 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) is different from false [2021-10-28 09:53:46,503 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (let ((.cse1 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) c_ULTIMATE.start_SqrtR_~xn~0))) (and (fp.geq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 9.0 10.0))) (fp.leq .cse1 ((_ to_fp 11 53) c_currentRoundingMode 5.0)))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_7 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_7))) is different from true [2021-10-28 09:53:47,448 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 09:53:47,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:53:47,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290764654] [2021-10-28 09:53:47,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-28 09:53:47,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1155395003] [2021-10-28 09:53:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:47,450 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 09:53:47,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 09:53:47,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 09:53:47,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 09:53:47,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-28 09:53:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:53:53,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:53:53,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:53:53,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 09:53:53,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331084954] [2021-10-28 09:53:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:53:53,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:53:53,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:53:53,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:53:53,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:57:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:57:12,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:57:12,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:57:12,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 09:57:12,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:57:12,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 09:57:12,560 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 09:57:12,560 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 09:57:12,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:57:12,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:12,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:13,179 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2021-10-28 09:57:13,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:57:13,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_999340bb-3993-483e-9265-2dfb94b1a9e9/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:57:13,213 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 09:57:13,216 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:57:13,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:57:13 BoogieIcfgContainer [2021-10-28 09:57:13,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:57:13,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:57:13,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:57:13,247 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:57:13,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:43:39" (3/4) ... [2021-10-28 09:57:13,252 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:57:13,252 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:57:13,254 INFO L168 Benchmark]: Toolchain (without parser) took 824128.77 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 49.4 MB in the beginning and 52.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:13,254 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 67.1 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:57:13,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.64 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 51.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:13,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.66 ms. Allocated memory is still 67.1 MB. Free memory was 51.2 MB in the beginning and 49.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:13,265 INFO L168 Benchmark]: Boogie Preprocessor took 38.76 ms. Allocated memory is still 67.1 MB. Free memory was 49.7 MB in the beginning and 48.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:57:13,267 INFO L168 Benchmark]: RCFGBuilder took 10380.49 ms. Allocated memory is still 67.1 MB. Free memory was 48.0 MB in the beginning and 37.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:13,269 INFO L168 Benchmark]: TraceAbstraction took 813285.36 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 37.1 MB in the beginning and 52.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:57:13,271 INFO L168 Benchmark]: Witness Printer took 6.17 ms. Allocated memory is still 88.1 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:57:13,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 67.1 MB. Free memory is still 48.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.64 ms. Allocated memory is still 67.1 MB. Free memory was 49.2 MB in the beginning and 51.2 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.66 ms. Allocated memory is still 67.1 MB. Free memory was 51.2 MB in the beginning and 49.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.76 ms. Allocated memory is still 67.1 MB. Free memory was 49.7 MB in the beginning and 48.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 10380.49 ms. Allocated memory is still 67.1 MB. Free memory was 48.0 MB in the beginning and 37.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 813285.36 ms. Allocated memory was 67.1 MB in the beginning and 88.1 MB in the end (delta: 21.0 MB). Free memory was 37.1 MB in the beginning and 52.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.17 ms. Allocated memory is still 88.1 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] double _EPS = 1e-6; [L43] double d, dd, r; [L44] double epsilon = 1e-8; [L46] d = 1. [L46] COND TRUE d <= 20. [L48] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 [L28] COND FALSE !(\read(cond)) [L38] return 1.0 / xnp1; [L51] r = SqrtR(dd) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 813.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 24 SolverSat, 0 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 23.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 574.4s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 7 QuantifiedInterpolants, 1043 SizeOfPredicates, 26 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 Received shutdown request...