./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/nan_float.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/nan_float.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 eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:29:53,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:29:53,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:29:53,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:29:53,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:29:53,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:29:53,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:29:53,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:29:53,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:29:53,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:29:53,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:29:53,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:29:53,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:29:53,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:29:53,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:29:53,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:29:53,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:29:53,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:29:53,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:29:53,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:29:53,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:29:53,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:29:53,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:29:53,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:29:53,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:29:53,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:29:53,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:29:53,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:29:53,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:29:53,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:29:53,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:29:53,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:29:53,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:29:53,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:29:53,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:29:53,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:29:53,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:29:53,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:29:53,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:29:53,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:29:53,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:29:53,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:29:53,728 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:29:53,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:29:53,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:29:53,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:29:53,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:29:53,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:29:53,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:29:53,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:29:53,731 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:29:53,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:29:53,732 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:29:53,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:29:53,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:29:53,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:29:53,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:29:53,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:29:53,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:29:53,734 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:29:53,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:29:53,734 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:29:53,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:29:53,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:29:53,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:29:53,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:29:53,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:29:53,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:29:53,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:29:53,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:29:53,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:29:53,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:29:53,737 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:29:53,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:29:53,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:29:53,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:29:53,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e [2021-12-15 23:29:53,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:29:53,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:29:53,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:29:53,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:29:53,966 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:29:53,967 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2021-12-15 23:29:54,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca9040f7b/91a512a7945c477e944946b20d7e626a/FLAG914e01aae [2021-12-15 23:29:54,411 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:29:54,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2021-12-15 23:29:54,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca9040f7b/91a512a7945c477e944946b20d7e626a/FLAG914e01aae [2021-12-15 23:29:54,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca9040f7b/91a512a7945c477e944946b20d7e626a [2021-12-15 23:29:54,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:29:54,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:29:54,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:29:54,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:29:54,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:29:54,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6924194f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54, skipping insertion in model container [2021-12-15 23:29:54,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:29:54,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:29:54,593 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/nan_float.c[434,447] [2021-12-15 23:29:54,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:29:54,617 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:29:54,626 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/nan_float.c[434,447] [2021-12-15 23:29:54,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:29:54,637 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:29:54,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54 WrapperNode [2021-12-15 23:29:54,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:29:54,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:29:54,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:29:54,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:29:54,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,661 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2021-12-15 23:29:54,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:29:54,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:29:54,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:29:54,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:29:54,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:29:54,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:29:54,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:29:54,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:29:54,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (1/1) ... [2021-12-15 23:29:54,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:29:54,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:29:54,717 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) [2021-12-15 23:29:54,739 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 [2021-12-15 23:29:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:29:54,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:29:54,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:29:54,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:29:54,787 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:29:54,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:29:54,843 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:29:54,847 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:29:54,847 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 23:29:54,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:29:54 BoogieIcfgContainer [2021-12-15 23:29:54,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:29:54,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:29:54,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:29:54,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:29:54,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:29:54" (1/3) ... [2021-12-15 23:29:54,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407a389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:29:54, skipping insertion in model container [2021-12-15 23:29:54,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:54" (2/3) ... [2021-12-15 23:29:54,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407a389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:29:54, skipping insertion in model container [2021-12-15 23:29:54,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:29:54" (3/3) ... [2021-12-15 23:29:54,855 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2021-12-15 23:29:54,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:29:54,860 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:29:54,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:29:54,896 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 23:29:54,897 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:29:54,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2021-12-15 23:29:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-15 23:29:54,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:29:54,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-15 23:29:54,909 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:29:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:29:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-12-15 23:29:54,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:29:54,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443334150] [2021-12-15 23:29:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:29:54,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:29:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:29:54,982 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 23:29:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:29:55,018 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 23:29:55,020 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 23:29:55,020 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:29:55,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:29:55,026 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-15 23:29:55,028 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:29:55,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:29:55 BoogieIcfgContainer [2021-12-15 23:29:55,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:29:55,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:29:55,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:29:55,046 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:29:55,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:29:54" (3/4) ... [2021-12-15 23:29:55,049 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 23:29:55,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:29:55,050 INFO L158 Benchmark]: Toolchain (without parser) took 612.17ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 53.1MB in the end (delta: 15.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-12-15 23:29:55,051 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory was 54.5MB in the beginning and 54.5MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:29:55,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.52ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 76.8MB in the end (delta: -8.7MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-12-15 23:29:55,053 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.25ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 75.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:29:55,053 INFO L158 Benchmark]: Boogie Preprocessor took 17.13ms. Allocated memory is still 100.7MB. Free memory was 75.3MB in the beginning and 74.6MB in the end (delta: 638.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:29:55,056 INFO L158 Benchmark]: RCFGBuilder took 168.12ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 66.3MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:29:55,057 INFO L158 Benchmark]: TraceAbstraction took 193.89ms. Allocated memory is still 100.7MB. Free memory was 65.8MB in the beginning and 53.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 23:29:55,058 INFO L158 Benchmark]: Witness Printer took 3.55ms. Allocated memory is still 100.7MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:29:55,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory was 54.5MB in the beginning and 54.5MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.52ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 76.8MB in the end (delta: -8.7MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.25ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 75.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.13ms. Allocated memory is still 100.7MB. Free memory was 75.3MB in the beginning and 74.6MB in the end (delta: 638.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 168.12ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 66.3MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 193.89ms. Allocated memory is still 100.7MB. Free memory was 65.8MB in the beginning and 53.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 3.55ms. Allocated memory is still 100.7MB. Free memory is still 53.1MB. 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: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15. Possible FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [L15] CALL __VERIFIER_assert(x==x) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-15 23:29:55,116 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 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/nan_float.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 eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:29:56,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:29:56,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:29:56,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:29:56,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:29:56,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:29:56,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:29:56,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:29:56,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:29:56,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:29:56,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:29:56,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:29:56,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:29:56,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:29:56,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:29:56,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:29:56,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:29:56,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:29:56,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:29:56,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:29:56,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:29:56,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:29:56,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:29:56,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:29:56,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:29:56,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:29:56,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:29:56,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:29:56,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:29:56,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:29:56,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:29:56,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:29:56,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:29:56,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:29:56,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:29:56,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:29:56,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:29:56,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:29:56,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:29:56,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:29:56,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:29:56,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 23:29:56,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:29:56,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:29:56,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:29:56,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:29:56,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:29:56,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:29:56,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:29:56,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:29:56,826 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:29:56,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:29:56,827 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:29:56,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:29:56,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:29:56,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:29:56,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:29:56,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:29:56,828 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 23:29:56,828 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 23:29:56,828 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 23:29:56,828 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:29:56,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:29:56,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:29:56,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:29:56,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:29:56,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:29:56,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:29:56,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:29:56,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:29:56,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:29:56,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:29:56,830 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 23:29:56,830 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 23:29:56,831 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:29:56,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:29:56,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:29:56,831 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:29:56,831 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 23:29:56,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb81f35d75989f789f001a9f8dd91513a75388b6b9d4a313a70014eff54b698e [2021-12-15 23:29:57,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:29:57,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:29:57,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:29:57,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:29:57,137 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:29:57,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/nan_float.c [2021-12-15 23:29:57,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296b8670b/e721b6c1d6464c9987b4f8663321f1a5/FLAGa4e8ff459 [2021-12-15 23:29:57,567 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:29:57,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/nan_float.c [2021-12-15 23:29:57,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296b8670b/e721b6c1d6464c9987b4f8663321f1a5/FLAGa4e8ff459 [2021-12-15 23:29:57,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296b8670b/e721b6c1d6464c9987b4f8663321f1a5 [2021-12-15 23:29:57,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:29:57,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:29:57,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:29:57,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:29:57,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:29:57,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d06df4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57, skipping insertion in model container [2021-12-15 23:29:57,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:29:57,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:29:57,747 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/nan_float.c[434,447] [2021-12-15 23:29:57,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:29:57,775 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:29:57,806 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/nan_float.c[434,447] [2021-12-15 23:29:57,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:29:57,844 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:29:57,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57 WrapperNode [2021-12-15 23:29:57,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:29:57,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:29:57,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:29:57,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:29:57,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,866 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2021-12-15 23:29:57,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:29:57,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:29:57,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:29:57,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:29:57,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:29:57,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:29:57,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:29:57,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:29:57,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (1/1) ... [2021-12-15 23:29:57,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:29:57,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:29:57,919 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) [2021-12-15 23:29:57,951 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 [2021-12-15 23:29:57,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:29:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 23:29:57,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:29:57,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:29:58,022 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:29:58,023 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:29:58,096 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:29:58,100 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:29:58,100 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 23:29:58,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:29:58 BoogieIcfgContainer [2021-12-15 23:29:58,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:29:58,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:29:58,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:29:58,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:29:58,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:29:57" (1/3) ... [2021-12-15 23:29:58,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b4b4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:29:58, skipping insertion in model container [2021-12-15 23:29:58,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:57" (2/3) ... [2021-12-15 23:29:58,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b4b4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:29:58, skipping insertion in model container [2021-12-15 23:29:58,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:29:58" (3/3) ... [2021-12-15 23:29:58,108 INFO L111 eAbstractionObserver]: Analyzing ICFG nan_float.c [2021-12-15 23:29:58,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:29:58,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:29:58,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:29:58,156 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 23:29:58,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:29:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 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) [2021-12-15 23:29:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-15 23:29:58,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:29:58,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-15 23:29:58,176 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:29:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:29:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-12-15 23:29:58,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:29:58,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133346453] [2021-12-15 23:29:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:29:58,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:29:58,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:29:58,193 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) [2021-12-15 23:29:58,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 23:29:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:29:58,262 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 23:29:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:29:58,311 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-15 23:29:58,312 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 23:29:58,312 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:29:58,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 23:29:58,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:29:58,518 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-15 23:29:58,520 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:29:58,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:29:58 BoogieIcfgContainer [2021-12-15 23:29:58,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:29:58,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:29:58,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:29:58,538 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:29:58,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:29:58" (3/4) ... [2021-12-15 23:29:58,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-15 23:29:58,571 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 23:29:58,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:29:58,574 INFO L158 Benchmark]: Toolchain (without parser) took 985.06ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 37.8MB in the beginning and 55.3MB in the end (delta: -17.5MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-12-15 23:29:58,574 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:29:58,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.23ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 41.9MB in the end (delta: -4.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 23:29:58,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.17ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:29:58,577 INFO L158 Benchmark]: Boogie Preprocessor took 28.58ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 39.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:29:58,579 INFO L158 Benchmark]: RCFGBuilder took 205.05ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 31.8MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:29:58,580 INFO L158 Benchmark]: TraceAbstraction took 432.54ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 31.2MB in the beginning and 56.8MB in the end (delta: -25.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:29:58,580 INFO L158 Benchmark]: Witness Printer took 34.75ms. Allocated memory is still 79.7MB. Free memory was 56.8MB in the beginning and 55.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:29:58,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.23ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 41.9MB in the end (delta: -4.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.17ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.58ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 39.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 205.05ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 31.8MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 432.54ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 31.2MB in the beginning and 56.8MB in the end (delta: -25.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 34.75ms. Allocated memory is still 79.7MB. Free memory was 56.8MB in the beginning and 55.3MB in the end (delta: 1.4MB). 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 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] float x; [L13] x = __VERIFIER_nondet_float() [L15] CALL __VERIFIER_assert(x==x) [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-15 23:29:58,629 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