./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/sqrt_poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:38:54,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:38:54,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:38:55,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:38:55,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:38:55,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:38:55,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:38:55,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:38:55,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:38:55,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:38:55,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:38:55,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:38:55,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:38:55,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:38:55,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:38:55,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:38:55,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:38:55,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:38:55,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:38:55,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:38:55,052 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:38:55,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:38:55,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:38:55,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:38:55,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:38:55,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:38:55,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:38:55,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:38:55,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:38:55,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:38:55,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:38:55,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:38:55,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:38:55,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:38:55,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:38:55,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:38:55,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:38:55,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:38:55,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:38:55,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:38:55,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:38:55,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:38:55,079 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:38:55,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:38:55,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:38:55,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:38:55,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:38:55,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:38:55,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:38:55,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:38:55,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:38:55,108 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:38:55,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:38:55,109 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:38:55,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:38:55,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:38:55,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:38:55,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:38:55,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:38:55,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:38:55,110 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:38:55,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:38:55,111 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:38:55,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:38:55,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:38:55,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:38:55,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:38:55,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:38:55,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:38:55,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:38:55,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:38:55,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:38:55,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:38:55,113 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:38:55,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:38:55,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:38:55,114 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2022-07-12 02:38:55,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:38:55,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:38:55,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:38:55,356 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:38:55,356 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:38:55,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2022-07-12 02:38:55,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6009ac46c/77e5d1b9ae914fcab60c8307f8e4eabe/FLAG8005df435 [2022-07-12 02:38:55,790 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:38:55,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2022-07-12 02:38:55,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6009ac46c/77e5d1b9ae914fcab60c8307f8e4eabe/FLAG8005df435 [2022-07-12 02:38:55,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6009ac46c/77e5d1b9ae914fcab60c8307f8e4eabe [2022-07-12 02:38:55,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:38:55,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:38:55,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:38:55,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:38:55,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:38:55,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:38:55" (1/1) ... [2022-07-12 02:38:55,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2996d9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:55, skipping insertion in model container [2022-07-12 02:38:55,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:38:55" (1/1) ... [2022-07-12 02:38:55,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:38:55,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:38:56,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2022-07-12 02:38:56,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:38:56,091 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:38:56,099 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2022-07-12 02:38:56,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:38:56,136 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:38:56,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56 WrapperNode [2022-07-12 02:38:56,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:38:56,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:38:56,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:38:56,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:38:56,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,191 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2022-07-12 02:38:56,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:38:56,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:38:56,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:38:56,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:38:56,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:38:56,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:38:56,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:38:56,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:38:56,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (1/1) ... [2022-07-12 02:38:56,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:38:56,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:38:56,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 02:38:56,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 02:38:56,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:38:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 02:38:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 02:38:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-12 02:38:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 02:38:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-12 02:38:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:38:56,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:38:56,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 02:38:56,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 02:38:56,397 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:38:56,398 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:38:56,562 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:38:56,567 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:38:56,568 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:38:56,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:38:56 BoogieIcfgContainer [2022-07-12 02:38:56,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:38:56,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:38:56,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:38:56,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:38:56,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:38:55" (1/3) ... [2022-07-12 02:38:56,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241c9fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:38:56, skipping insertion in model container [2022-07-12 02:38:56,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:56" (2/3) ... [2022-07-12 02:38:56,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241c9fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:38:56, skipping insertion in model container [2022-07-12 02:38:56,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:38:56" (3/3) ... [2022-07-12 02:38:56,577 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2022-07-12 02:38:56,589 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:38:56,589 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:38:56,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:38:56,634 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@91cc413, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@230725ba [2022-07-12 02:38:56,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:38:56,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) 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) [2022-07-12 02:38:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 02:38:56,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:38:56,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:38:56,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:38:56,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:38:56,661 INFO L85 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2022-07-12 02:38:56,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:38:56,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376083670] [2022-07-12 02:38:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:38:56,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:38:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:38:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:38:56,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 02:38:56,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376083670] [2022-07-12 02:38:56,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376083670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:38:56,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:38:56,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:38:56,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627798609] [2022-07-12 02:38:56,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:38:56,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:38:56,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 02:38:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:38:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:38:56,875 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-12 02:38:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:38:56,890 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-07-12 02:38:56,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:38:56,892 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-07-12 02:38:56,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:38:56,900 INFO L225 Difference]: With dead ends: 25 [2022-07-12 02:38:56,900 INFO L226 Difference]: Without dead ends: 10 [2022-07-12 02:38:56,908 INFO L412 NwaCegarLoop]: 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 [2022-07-12 02:38:56,913 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:38:56,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:38:56,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-12 02:38:56,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-12 02:38:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-12 02:38:56,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-12 02:38:56,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2022-07-12 02:38:56,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:38:56,942 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-12 02:38:56,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-12 02:38:56,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-12 02:38:56,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 02:38:56,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:38:56,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:38:56,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 02:38:56,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:38:56,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:38:56,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2022-07-12 02:38:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:38:56,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634472977] [2022-07-12 02:38:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:38:56,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:38:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:38:57,073 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:38:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:38:57,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 02:38:57,131 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:38:57,135 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:38:57,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 02:38:57,141 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 02:38:57,144 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:38:57,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:38:57 BoogieIcfgContainer [2022-07-12 02:38:57,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:38:57,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:38:57,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:38:57,172 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:38:57,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:38:56" (3/4) ... [2022-07-12 02:38:57,174 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 02:38:57,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:38:57,176 INFO L158 Benchmark]: Toolchain (without parser) took 1368.81ms. Allocated memory is still 115.3MB. Free memory was 87.4MB in the beginning and 88.1MB in the end (delta: -616.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:38:57,176 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:38:57,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.07ms. Allocated memory is still 115.3MB. Free memory was 87.4MB in the beginning and 91.6MB in the end (delta: -4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:38:57,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.41ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 90.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:38:57,181 INFO L158 Benchmark]: Boogie Preprocessor took 56.32ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 88.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:38:57,181 INFO L158 Benchmark]: RCFGBuilder took 319.81ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 77.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 02:38:57,181 INFO L158 Benchmark]: TraceAbstraction took 600.16ms. Allocated memory is still 115.3MB. Free memory was 76.9MB in the beginning and 88.1MB in the end (delta: -11.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:38:57,182 INFO L158 Benchmark]: Witness Printer took 3.24ms. Allocated memory is still 115.3MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:38:57,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 36.8MB in the beginning and 36.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.07ms. Allocated memory is still 115.3MB. Free memory was 87.4MB in the beginning and 91.6MB in the end (delta: -4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.41ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 90.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.32ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 88.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 319.81ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 77.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 600.16ms. Allocated memory is still 115.3MB. Free memory was 76.9MB in the beginning and 88.1MB in the end (delta: -11.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.24ms. Allocated memory is still 115.3MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * 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: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 65. Possible FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=1] [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L63] CALL, EXPR sqrt_custom(x) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=4294967299, a=4294967299, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=0, x={4:0}] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [\old(a)=4294967299, a=4294967299, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=1, x={4:0}] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [\old(a)=4294967299, \result=4294967297, a=4294967299, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, exp=1, r=4294967297] [L63] RET, EXPR sqrt_custom(x) [L63] y = sqrt_custom(x) [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L14] COND TRUE !(cond) VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] [L14] reach_error() VAL [\old(cond)=0, C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, 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=14occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2022-07-12 02:38:57,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:38:59,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:38:59,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:38:59,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:38:59,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:38:59,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:38:59,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:38:59,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:38:59,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:38:59,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:38:59,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:38:59,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:38:59,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:38:59,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:38:59,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:38:59,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:38:59,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:38:59,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:38:59,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:38:59,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:38:59,056 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:38:59,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:38:59,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:38:59,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:38:59,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:38:59,064 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:38:59,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:38:59,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:38:59,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:38:59,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:38:59,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:38:59,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:38:59,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:38:59,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:38:59,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:38:59,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:38:59,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:38:59,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:38:59,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:38:59,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:38:59,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:38:59,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:38:59,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:38:59,109 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:38:59,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:38:59,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:38:59,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:38:59,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:38:59,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:38:59,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:38:59,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:38:59,112 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:38:59,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:38:59,112 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:38:59,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:38:59,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:38:59,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:38:59,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:38:59,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:38:59,113 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:38:59,114 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:38:59,114 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:38:59,114 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:38:59,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:38:59,114 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:38:59,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:38:59,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:38:59,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:38:59,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:38:59,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:38:59,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:38:59,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:38:59,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:38:59,116 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:38:59,116 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:38:59,116 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:38:59,116 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:38:59,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:38:59,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:38:59,117 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2022-07-12 02:38:59,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:38:59,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:38:59,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:38:59,454 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:38:59,454 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:38:59,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2022-07-12 02:38:59,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82e8ce01/a5bc29607e1042f78bcf7a3d683aadfe/FLAG2d351d135 [2022-07-12 02:38:59,944 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:38:59,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2022-07-12 02:38:59,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82e8ce01/a5bc29607e1042f78bcf7a3d683aadfe/FLAG2d351d135 [2022-07-12 02:38:59,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82e8ce01/a5bc29607e1042f78bcf7a3d683aadfe [2022-07-12 02:38:59,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:38:59,978 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:38:59,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:38:59,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:38:59,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:38:59,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:38:59" (1/1) ... [2022-07-12 02:38:59,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5729da7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:38:59, skipping insertion in model container [2022-07-12 02:38:59,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:38:59" (1/1) ... [2022-07-12 02:38:59,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:39:00,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:39:00,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2022-07-12 02:39:00,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:39:00,193 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:39:00,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2022-07-12 02:39:00,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:39:00,279 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:39:00,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00 WrapperNode [2022-07-12 02:39:00,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:39:00,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:39:00,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:39:00,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:39:00,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,342 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2022-07-12 02:39:00,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:39:00,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:39:00,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:39:00,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:39:00,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:39:00,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:39:00,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:39:00,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:39:00,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (1/1) ... [2022-07-12 02:39:00,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:39:00,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:39:00,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 02:39:00,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 02:39:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:39:00,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-07-12 02:39:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-12 02:39:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:39:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 02:39:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 02:39:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:39:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:39:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 02:39:00,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 02:39:00,637 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:39:00,638 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:39:07,133 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:39:07,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:39:07,138 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:39:07,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:39:07 BoogieIcfgContainer [2022-07-12 02:39:07,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:39:07,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:39:07,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:39:07,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:39:07,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:38:59" (1/3) ... [2022-07-12 02:39:07,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2fa7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:39:07, skipping insertion in model container [2022-07-12 02:39:07,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:39:00" (2/3) ... [2022-07-12 02:39:07,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2fa7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:39:07, skipping insertion in model container [2022-07-12 02:39:07,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:39:07" (3/3) ... [2022-07-12 02:39:07,165 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2022-07-12 02:39:07,193 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:39:07,194 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:39:07,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:39:07,239 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@11113df, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@663b4474 [2022-07-12 02:39:07,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:39:07,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) 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) [2022-07-12 02:39:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 02:39:07,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:39:07,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:39:07,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:39:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:39:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2022-07-12 02:39:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:39:07,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778341117] [2022-07-12 02:39:07,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:39:07,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:39:07,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:39:07,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 02:39:07,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 02:39:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:39:08,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 02:39:08,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:39:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:39:08,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:39:08,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:39:08,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778341117] [2022-07-12 02:39:08,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778341117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:39:08,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:39:08,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:39:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473298541] [2022-07-12 02:39:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:39:08,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:39:08,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:39:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:39:08,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:39:08,417 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-12 02:39:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:39:08,426 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-07-12 02:39:08,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:39:08,427 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-07-12 02:39:08,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:39:08,433 INFO L225 Difference]: With dead ends: 25 [2022-07-12 02:39:08,433 INFO L226 Difference]: Without dead ends: 10 [2022-07-12 02:39:08,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:39:08,439 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:39:08,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:39:08,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-12 02:39:08,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-12 02:39:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-12 02:39:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-12 02:39:08,466 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2022-07-12 02:39:08,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:39:08,467 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-12 02:39:08,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-12 02:39:08,467 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-12 02:39:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 02:39:08,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:39:08,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:39:08,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 02:39:08,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:39:08,680 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:39:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:39:08,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2022-07-12 02:39:08,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:39:08,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493384515] [2022-07-12 02:39:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:39:08,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:39:08,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:39:08,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 02:39:08,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 02:39:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:39:09,968 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:39:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:39:11,303 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 02:39:11,303 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:39:11,305 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:39:11,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 02:39:11,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:39:11,515 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 02:39:11,517 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:39:11,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:39:11 BoogieIcfgContainer [2022-07-12 02:39:11,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:39:11,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:39:11,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:39:11,546 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:39:11,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:39:07" (3/4) ... [2022-07-12 02:39:11,548 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 02:39:11,589 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 02:39:11,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:39:11,595 INFO L158 Benchmark]: Toolchain (without parser) took 11617.25ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.4MB in the beginning and 48.7MB in the end (delta: -17.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:39:11,596 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:39:11,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.48ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.2MB in the beginning and 53.3MB in the end (delta: -22.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2022-07-12 02:39:11,597 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.27ms. Allocated memory is still 71.3MB. Free memory was 53.1MB in the beginning and 51.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:39:11,597 INFO L158 Benchmark]: Boogie Preprocessor took 51.81ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 50.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:39:11,597 INFO L158 Benchmark]: RCFGBuilder took 6755.02ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 53.8MB in the end (delta: -3.9MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-07-12 02:39:11,598 INFO L158 Benchmark]: TraceAbstraction took 4393.10ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 51.3MB in the end (delta: 2.2MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-07-12 02:39:11,599 INFO L158 Benchmark]: Witness Printer took 49.15ms. Allocated memory is still 71.3MB. Free memory was 51.3MB in the beginning and 48.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 02:39:11,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.48ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.2MB in the beginning and 53.3MB in the end (delta: -22.0MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.27ms. Allocated memory is still 71.3MB. Free memory was 53.1MB in the beginning and 51.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.81ms. Allocated memory is still 71.3MB. Free memory was 51.4MB in the beginning and 50.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 6755.02ms. Allocated memory is still 71.3MB. Free memory was 49.9MB in the beginning and 53.8MB in the end (delta: -3.9MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4393.10ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 51.3MB in the end (delta: 2.2MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Witness Printer took 49.15ms. Allocated memory is still 71.3MB. Free memory was 51.3MB in the beginning and 48.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L61] CALL assume_abort_if_not(x >= 1. && x <= 1e10) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=1] [L61] RET assume_abort_if_not(x >= 1. && x <= 1e10) [L63] CALL, EXPR sqrt_custom(x) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [\old(a)=8589934592, a=8589934592, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=0, r=-9424883247839044000000000000, x={7:0}] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [\old(a)=8589934592, a=8589934592, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=1, r=-9424883247839044000000000000, x={7:0}] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [\old(a)=8589934592, \result=-80959140268404600000000000000000000000, a=8589934592, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, exp=1, r=-80959140268404600000000000000000000000] [L63] RET, EXPR sqrt_custom(x) [L63] y = sqrt_custom(x) [L65] CALL __VERIFIER_assert(y >= 0. && y <= 1e6) [L14] COND TRUE !(cond) VAL [\old(cond)=0, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=0] [L14] reach_error() VAL [\old(cond)=0, C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 2.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2022-07-12 02:39:11,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE