./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0831.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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-newlib/float_req_bl_0831.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 3f171dd4f575b92a9302785470b2bac89695cbf3 .......................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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-newlib/float_req_bl_0831.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 3f171dd4f575b92a9302785470b2bac89695cbf3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:48:57,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:48:57,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:48:57,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:48:57,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:48:57,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:48:57,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:48:57,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:48:57,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:48:57,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:48:57,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:48:57,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:48:57,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:48:57,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:48:57,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:48:57,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:48:57,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:48:57,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:48:57,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:48:57,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:48:57,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:48:57,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:48:57,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:48:57,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:48:57,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:48:57,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:48:57,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:48:57,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:48:57,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:48:57,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:48:57,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:48:57,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:48:57,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:48:57,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:48:57,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:48:57,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:48:57,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:48:57,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:48:57,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:48:57,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:48:57,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:48:57,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 01:48:57,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:48:57,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:48:57,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:48:57,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:48:57,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:48:57,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:48:57,825 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:48:57,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:48:57,825 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:48:57,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 01:48:57,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:48:57,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:48:57,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:48:57,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:48:57,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:48:57,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:48:57,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:48:57,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:48:57,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:48:57,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:48:57,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:48:57,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:48:57,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:48:57,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:48:57,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:48:57,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:48:57,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 01:48:57,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 01:48:57,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:48:57,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:48:57,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f171dd4f575b92a9302785470b2bac89695cbf3 [2021-08-26 01:48:58,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:48:58,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:48:58,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:48:58,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:48:58,234 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:48:58,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-08-26 01:48:58,309 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1880141fd/31b7e89a074e4e2ea73970e5e6abef33/FLAGd8aeca2e8 [2021-08-26 01:48:58,798 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:48:58,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-08-26 01:48:58,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1880141fd/31b7e89a074e4e2ea73970e5e6abef33/FLAGd8aeca2e8 [2021-08-26 01:48:59,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1880141fd/31b7e89a074e4e2ea73970e5e6abef33 [2021-08-26 01:48:59,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:48:59,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:48:59,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:48:59,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:48:59,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:48:59,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b672ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59, skipping insertion in model container [2021-08-26 01:48:59,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:48:59,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:48:59,474 WARN L228 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-newlib/float_req_bl_0831.c[3205,3218] [2021-08-26 01:48:59,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:48:59,484 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:48:59,549 WARN L228 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-newlib/float_req_bl_0831.c[3205,3218] [2021-08-26 01:48:59,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:48:59,564 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:48:59,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59 WrapperNode [2021-08-26 01:48:59,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:48:59,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:48:59,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:48:59,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:48:59,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:48:59,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:48:59,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:48:59,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:48:59,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:48:59,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:48:59,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:48:59,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:48:59,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (1/1) ... [2021-08-26 01:48:59,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:48:59,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:48:59,692 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) [2021-08-26 01:48:59,695 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 [2021-08-26 01:48:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 01:48:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:48:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 01:48:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-26 01:48:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 01:48:59,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:48:59,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:48:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 01:48:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-08-26 01:48:59,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:49:00,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:49:00,172 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-08-26 01:49:00,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:00 BoogieIcfgContainer [2021-08-26 01:49:00,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:49:00,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:49:00,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:49:00,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:49:00,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:48:59" (1/3) ... [2021-08-26 01:49:00,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6e5c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:49:00, skipping insertion in model container [2021-08-26 01:49:00,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:48:59" (2/3) ... [2021-08-26 01:49:00,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6e5c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:49:00, skipping insertion in model container [2021-08-26 01:49:00,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:00" (3/3) ... [2021-08-26 01:49:00,184 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2021-08-26 01:49:00,190 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:49:00,190 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:49:00,251 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:49:00,263 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-26 01:49:00,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:49:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 36 states have internal predecessors, (58), 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) [2021-08-26 01:49:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 01:49:00,295 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:00,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:00,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:00,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1903272656, now seen corresponding path program 1 times [2021-08-26 01:49:00,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:49:00,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954712135] [2021-08-26 01:49:00,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:00,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:49:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:49:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:00,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:49:00,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954712135] [2021-08-26 01:49:00,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954712135] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:49:00,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:49:00,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 01:49:00,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730278758] [2021-08-26 01:49:00,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:49:00,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:49:00,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:49:00,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:49:00,528 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 36 states have internal predecessors, (58), 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) [2021-08-26 01:49:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:49:00,547 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2021-08-26 01:49:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:49:00,550 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 [2021-08-26 01:49:00,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:49:00,557 INFO L225 Difference]: With dead ends: 72 [2021-08-26 01:49:00,558 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 01:49:00,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:49:00,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 01:49:00,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 01:49:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 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) [2021-08-26 01:49:00,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-08-26 01:49:00,599 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 9 [2021-08-26 01:49:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:49:00,600 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-08-26 01:49:00,601 INFO L471 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) [2021-08-26 01:49:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-08-26 01:49:00,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 01:49:00,602 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:00,602 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:00,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 01:49:00,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:00,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:00,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1485078157, now seen corresponding path program 1 times [2021-08-26 01:49:00,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:49:00,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245912486] [2021-08-26 01:49:00,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:00,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:49:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:49:00,668 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 01:49:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:49:00,731 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 01:49:00,731 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 01:49:00,734 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:49:00,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 01:49:00,743 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:49:00,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:49:00 BoogieIcfgContainer [2021-08-26 01:49:00,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:49:00,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:49:00,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:49:00,779 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:49:00,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:00" (3/4) ... [2021-08-26 01:49:00,782 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:49:00,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:49:00,784 INFO L168 Benchmark]: Toolchain (without parser) took 1463.38 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.9 MB in the beginning and 43.1 MB in the end (delta: -11.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:00,784 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 37.4 MB in the beginning and 37.3 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:00,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.34 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.7 MB in the beginning and 49.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:00,785 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.72 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:00,786 INFO L168 Benchmark]: Boogie Preprocessor took 27.07 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 45.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:00,786 INFO L168 Benchmark]: RCFGBuilder took 533.15 ms. Allocated memory is still 67.1 MB. Free memory was 45.8 MB in the beginning and 37.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:00,787 INFO L168 Benchmark]: TraceAbstraction took 602.37 ms. Allocated memory is still 67.1 MB. Free memory was 36.8 MB in the beginning and 43.4 MB in the end (delta: -6.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:00,787 INFO L168 Benchmark]: Witness Printer took 3.73 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 43.1 MB in the end (delta: 359.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:00,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 37.4 MB in the beginning and 37.3 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 242.34 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.7 MB in the beginning and 49.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.72 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 47.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.07 ms. Allocated memory is still 67.1 MB. Free memory was 47.5 MB in the beginning and 45.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 533.15 ms. Allocated memory is still 67.1 MB. Free memory was 45.8 MB in the beginning and 37.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 602.37 ms. Allocated memory is still 67.1 MB. Free memory was 36.8 MB in the beginning and 43.4 MB in the end (delta: -6.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.73 ms. Allocated memory is still 67.1 MB. Free memory was 43.4 MB in the beginning and 43.1 MB in the end (delta: 359.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 123]: 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, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L118] float x = 0.0f / 0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L119] float res = __ieee754_expf(x); [L15] return x != x; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L122] COND TRUE !isnan_float(res) [L123] reach_error() VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 497.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 20.6ms, AutomataDifference: 49.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.6ms SsaConstructionTime, 95.5ms SatisfiabilityAnalysisTime, 72.3ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 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 [2021-08-26 01:49:00,830 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:49:02,625 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-26 01:49:02,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:49:02,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:49:02,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:49:02,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:49:02,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:49:02,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:49:02,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:49:02,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:49:02,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:49:02,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:49:02,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:49:02,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:49:02,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:49:02,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:49:02,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:49:02,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:49:02,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:49:02,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:49:02,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:49:02,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:49:02,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:49:02,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:49:02,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:49:02,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:49:02,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:49:02,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:49:02,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:49:02,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:49:02,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:49:02,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 01:49:02,778 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:49:02,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:49:02,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:49:02,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:49:02,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:49:02,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:49:02,782 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:49:02,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:49:02,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:49:02,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:49:02,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:49:02,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:49:02,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:49:02,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:49:02,784 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 01:49:02,784 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 01:49:02,784 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:49:02,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:49:02,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:49:02,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:49:02,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:49:02,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:49:02,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:49:02,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:49:02,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:49:02,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:49:02,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:49:02,786 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 01:49:02,787 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 01:49:02,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:49:02,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:49:02,787 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 01:49:02,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f171dd4f575b92a9302785470b2bac89695cbf3 [2021-08-26 01:49:03,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:49:03,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:49:03,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:49:03,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:49:03,142 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:49:03,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-08-26 01:49:03,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57988053/ef83182a5551441597327251d1a23fdd/FLAGd14e23d5e [2021-08-26 01:49:03,644 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:49:03,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2021-08-26 01:49:03,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57988053/ef83182a5551441597327251d1a23fdd/FLAGd14e23d5e [2021-08-26 01:49:03,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57988053/ef83182a5551441597327251d1a23fdd [2021-08-26 01:49:03,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:49:03,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:49:03,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:49:03,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:49:03,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:49:03,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:49:03" (1/1) ... [2021-08-26 01:49:03,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8b855c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:03, skipping insertion in model container [2021-08-26 01:49:03,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:49:03" (1/1) ... [2021-08-26 01:49:03,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:49:03,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:49:03,923 WARN L228 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-newlib/float_req_bl_0831.c[3205,3218] [2021-08-26 01:49:03,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:49:03,998 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:49:04,045 WARN L228 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-newlib/float_req_bl_0831.c[3205,3218] [2021-08-26 01:49:04,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:49:04,073 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:49:04,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04 WrapperNode [2021-08-26 01:49:04,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:49:04,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:49:04,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:49:04,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:49:04,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:49:04,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:49:04,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:49:04,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:49:04,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:49:04,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:49:04,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:49:04,203 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:49:04,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (1/1) ... [2021-08-26 01:49:04,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:49:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:49:04,234 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) [2021-08-26 01:49:04,256 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 [2021-08-26 01:49:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-08-26 01:49:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 01:49:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:49:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-08-26 01:49:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 01:49:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:49:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:49:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-08-26 01:49:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 01:49:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:49:13,693 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:49:13,694 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-08-26 01:49:13,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:13 BoogieIcfgContainer [2021-08-26 01:49:13,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:49:13,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:49:13,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:49:13,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:49:13,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:49:03" (1/3) ... [2021-08-26 01:49:13,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ee5ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:49:13, skipping insertion in model container [2021-08-26 01:49:13,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:49:04" (2/3) ... [2021-08-26 01:49:13,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ee5ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:49:13, skipping insertion in model container [2021-08-26 01:49:13,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:13" (3/3) ... [2021-08-26 01:49:13,703 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2021-08-26 01:49:13,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:49:13,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:49:13,747 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:49:13,753 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-26 01:49:13,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:49:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 36 states have internal predecessors, (58), 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) [2021-08-26 01:49:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 01:49:13,778 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:13,778 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:13,779 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:13,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1903272656, now seen corresponding path program 1 times [2021-08-26 01:49:13,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:49:13,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438257896] [2021-08-26 01:49:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:13,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:49:13,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:49:13,805 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) [2021-08-26 01:49:13,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 01:49:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:49:14,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 01:49:14,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:49:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:14,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:49:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:14,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:49:14,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438257896] [2021-08-26 01:49:14,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438257896] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:49:14,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:49:14,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 01:49:14,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584875936] [2021-08-26 01:49:14,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:49:14,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:49:14,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:49:14,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:49:14,462 INFO L87 Difference]: Start difference. First operand has 37 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 36 states have internal predecessors, (58), 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) [2021-08-26 01:49:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:49:14,481 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2021-08-26 01:49:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:49:14,483 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 [2021-08-26 01:49:14,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:49:14,490 INFO L225 Difference]: With dead ends: 72 [2021-08-26 01:49:14,491 INFO L226 Difference]: Without dead ends: 34 [2021-08-26 01:49:14,494 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:49:14,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-26 01:49:14,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-26 01:49:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 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) [2021-08-26 01:49:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-08-26 01:49:14,525 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 9 [2021-08-26 01:49:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:49:14,526 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-08-26 01:49:14,526 INFO L471 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) [2021-08-26 01:49:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-08-26 01:49:14,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 01:49:14,527 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:14,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:14,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 01:49:14,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:49:14,750 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:14,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:14,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1485078157, now seen corresponding path program 1 times [2021-08-26 01:49:14,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:49:14,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716660168] [2021-08-26 01:49:14,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:14,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:49:14,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:49:14,754 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) [2021-08-26 01:49:14,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 01:49:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:49:15,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 01:49:15,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:49:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:15,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:49:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:16,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:49:16,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716660168] [2021-08-26 01:49:16,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716660168] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:49:16,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:49:16,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-26 01:49:16,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004423503] [2021-08-26 01:49:16,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 01:49:16,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:49:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 01:49:16,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:49:16,763 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-08-26 01:49:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:49:29,930 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-08-26 01:49:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 01:49:29,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 10 [2021-08-26 01:49:29,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:49:29,931 INFO L225 Difference]: With dead ends: 50 [2021-08-26 01:49:29,931 INFO L226 Difference]: Without dead ends: 42 [2021-08-26 01:49:29,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1175.5ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-26 01:49:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-08-26 01:49:29,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-08-26 01:49:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2021-08-26 01:49:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-08-26 01:49:29,938 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 10 [2021-08-26 01:49:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:49:29,938 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-08-26 01:49:29,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-08-26 01:49:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-08-26 01:49:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 01:49:29,939 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:49:29,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:49:29,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-26 01:49:30,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:49:30,145 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:49:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:49:30,146 INFO L82 PathProgramCache]: Analyzing trace with hash 228797714, now seen corresponding path program 1 times [2021-08-26 01:49:30,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:49:30,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447966270] [2021-08-26 01:49:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:49:30,147 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:49:30,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:49:30,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:49:30,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 01:49:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:49:30,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 01:49:30,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:49:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:30,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:49:31,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:49:31,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:49:31,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447966270] [2021-08-26 01:49:31,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447966270] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:49:31,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:49:31,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 10 [2021-08-26 01:49:31,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102596400] [2021-08-26 01:49:31,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 01:49:31,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:49:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 01:49:31,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:49:31,797 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-08-26 01:49:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:49:32,058 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-08-26 01:49:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 01:49:32,058 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 01:49:32,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:49:32,058 INFO L225 Difference]: With dead ends: 34 [2021-08-26 01:49:32,059 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 01:49:32,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 788.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-08-26 01:49:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 01:49:32,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 01:49:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-08-26 01:49:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 01:49:32,060 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-08-26 01:49:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:49:32,060 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 01:49:32,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-08-26 01:49:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 01:49:32,060 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 01:49:32,062 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:49:32,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 01:49:32,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:49:32,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 01:49:32,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:32,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:32,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:32,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:32,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:32,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:49:32,515 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 75) no Hoare annotation was computed. [2021-08-26 01:49:32,515 INFO L860 garLoopResultBuilder]: At program point L127(lines 113 128) the Hoare annotation is: true [2021-08-26 01:49:32,516 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 01:49:32,516 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2021-08-26 01:49:32,516 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 01:49:32,516 INFO L857 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2021-08-26 01:49:32,516 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 54) no Hoare annotation was computed. [2021-08-26 01:49:32,516 INFO L857 garLoopResultBuilder]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2021-08-26 01:49:32,516 INFO L853 garLoopResultBuilder]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2021-08-26 01:49:32,516 INFO L857 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2021-08-26 01:49:32,516 INFO L857 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2021-08-26 01:49:32,517 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2021-08-26 01:49:32,517 INFO L857 garLoopResultBuilder]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2021-08-26 01:49:32,517 INFO L857 garLoopResultBuilder]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2021-08-26 01:49:32,521 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 56) no Hoare annotation was computed. [2021-08-26 01:49:32,521 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-08-26 01:49:32,521 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-08-26 01:49:32,522 INFO L857 garLoopResultBuilder]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2021-08-26 01:49:32,522 INFO L857 garLoopResultBuilder]: For program point L122(lines 122 125) no Hoare annotation was computed. [2021-08-26 01:49:32,522 INFO L853 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) [2021-08-26 01:49:32,522 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 74) no Hoare annotation was computed. [2021-08-26 01:49:32,522 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 01:49:32,522 INFO L857 garLoopResultBuilder]: For program point L123(line 123) no Hoare annotation was computed. [2021-08-26 01:49:32,522 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-08-26 01:49:32,523 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2021-08-26 01:49:32,523 INFO L857 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-08-26 01:49:32,523 INFO L853 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-08-26 01:49:32,523 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 01:49:32,523 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-08-26 01:49:32,523 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2021-08-26 01:49:32,523 INFO L857 garLoopResultBuilder]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2021-08-26 01:49:32,523 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 110) no Hoare annotation was computed. [2021-08-26 01:49:32,523 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-08-26 01:49:32,523 INFO L853 garLoopResultBuilder]: At program point L109(lines 38 111) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0))) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven)) [2021-08-26 01:49:32,524 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2021-08-26 01:49:32,524 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (= currentRoundingMode roundNearestTiesToEven)) [2021-08-26 01:49:32,524 INFO L857 garLoopResultBuilder]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2021-08-26 01:49:32,528 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:49:32,535 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,536 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,536 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,536 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,540 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,541 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,541 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,541 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,542 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:49:32,542 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,543 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:49:32,543 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,543 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,544 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,544 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,544 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,544 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,545 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,545 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,545 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:49:32 BoogieIcfgContainer [2021-08-26 01:49:32,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:49:32,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:49:32,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:49:32,547 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:49:32,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:49:13" (3/4) ... [2021-08-26 01:49:32,550 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 01:49:32,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-26 01:49:32,560 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-26 01:49:32,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 01:49:32,561 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 01:49:32,580 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-08-26 01:49:32,581 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-08-26 01:49:32,581 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result [2021-08-26 01:49:32,608 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 01:49:32,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:49:32,610 INFO L168 Benchmark]: Toolchain (without parser) took 28932.58 ms. Allocated memory was 65.0 MB in the beginning and 98.6 MB in the end (delta: 33.6 MB). Free memory was 45.2 MB in the beginning and 69.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:32,611 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 45.7 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:49:32,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.89 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 45.5 MB in the end (delta: -515.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:32,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.63 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 43.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:32,612 INFO L168 Benchmark]: Boogie Preprocessor took 69.12 ms. Allocated memory is still 65.0 MB. Free memory was 43.4 MB in the beginning and 41.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:32,612 INFO L168 Benchmark]: RCFGBuilder took 9493.70 ms. Allocated memory is still 65.0 MB. Free memory was 41.4 MB in the beginning and 33.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:32,613 INFO L168 Benchmark]: TraceAbstraction took 18848.93 ms. Allocated memory was 65.0 MB in the beginning and 98.6 MB in the end (delta: 33.6 MB). Free memory was 32.9 MB in the beginning and 75.8 MB in the end (delta: -43.0 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:32,613 INFO L168 Benchmark]: Witness Printer took 62.39 ms. Allocated memory is still 98.6 MB. Free memory was 75.8 MB in the beginning and 69.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 01:49:32,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 45.7 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.89 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 45.5 MB in the end (delta: -515.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.63 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 43.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.12 ms. Allocated memory is still 65.0 MB. Free memory was 43.4 MB in the beginning and 41.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9493.70 ms. Allocated memory is still 65.0 MB. Free memory was 41.4 MB in the beginning and 33.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18848.93 ms. Allocated memory was 65.0 MB in the beginning and 98.6 MB in the end (delta: 33.6 MB). Free memory was 32.9 MB in the beginning and 75.8 MB in the end (delta: -43.0 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. * Witness Printer took 62.39 ms. Allocated memory is still 98.6 MB. Free memory was 75.8 MB in the beginning and 69.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 123]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18781.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 17.4ms, AutomataDifference: 13478.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 251.3ms, InitialAbstractionConstructionTime: 7.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 79 SDtfs, 61 SDslu, 121 SDs, 0 SdLazy, 65 SolverSat, 2 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 12485.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1964.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 61 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 34.4ms HoareSimplificationTime, 6 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 210.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 101.6ms SsaConstructionTime, 1060.4ms SatisfiabilityAnalysisTime, 2982.7ms InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 5 QuantifiedInterpolants, 303 SizeOfPredicates, 15 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant [2021-08-26 01:49:32,623 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,623 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,623 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,623 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,624 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,624 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,624 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,624 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant [2021-08-26 01:49:32,625 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:49:32,625 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,625 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:49:32,626 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 15]: Loop Invariant [2021-08-26 01:49:32,626 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,626 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,626 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,626 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,627 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,627 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,627 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-08-26 01:49:32,627 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && 1bv32 == \result - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-08-26 01:49:32,773 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...