./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1032a.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_1032a.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a3696439220bbea1d6ed5ed3b22aa10206af5de ................................................................................................................................................................................................................................................................................................................................................................ 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 -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_1032a.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a3696439220bbea1d6ed5ed3b22aa10206af5de .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:53:11,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:53:11,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:53:11,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:53:11,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:53:11,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:53:11,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:53:11,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:53:11,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:53:11,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:53:11,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:53:11,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:53:11,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:53:11,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:53:11,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:53:11,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:53:11,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:53:11,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:53:11,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:53:11,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:53:11,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:53:11,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:53:11,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:53:11,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:53:11,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:53:11,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:53:11,147 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:53:11,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:53:11,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:53:11,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:53:11,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:53:11,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:53:11,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:53:11,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:53:11,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:53:11,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:53:11,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:53:11,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:53:11,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:53:11,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:53:11,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:53:11,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:53:11,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:53:11,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:53:11,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:53:11,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:53:11,177 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:53:11,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:53:11,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:53:11,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:53:11,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:53:11,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:53:11,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:53:11,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:53:11,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:53:11,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:53:11,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:53:11,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:53:11,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:53:11,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:53:11,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:53:11,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:53:11,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:53:11,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:53:11,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:53:11,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:53:11,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:53:11,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:53:11,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:53:11,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:53:11,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:53:11,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2020-07-28 17:53:11,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:53:11,502 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:53:11,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:53:11,508 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:53:11,508 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:53:11,509 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2020-07-28 17:53:11,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ed3af73/e3c6105250f34ef6aca1a3054c81c27d/FLAGe059ea59f [2020-07-28 17:53:12,042 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:53:12,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2020-07-28 17:53:12,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ed3af73/e3c6105250f34ef6aca1a3054c81c27d/FLAGe059ea59f [2020-07-28 17:53:12,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ed3af73/e3c6105250f34ef6aca1a3054c81c27d [2020-07-28 17:53:12,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:53:12,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:53:12,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:53:12,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:53:12,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:53:12,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a96ca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12, skipping insertion in model container [2020-07-28 17:53:12,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:53:12,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:53:12,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:53:12,645 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:53:12,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:53:12,759 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:53:12,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12 WrapperNode [2020-07-28 17:53:12,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:53:12,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:53:12,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:53:12,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:53:12,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:53:12,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:53:12,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:53:12,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:53:12,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... [2020-07-28 17:53:12,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:53:12,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:53:12,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:53:12,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:53:12,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:53:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:53:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-28 17:53:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:53:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-28 17:53:12,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:53:12,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:53:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:53:12,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:53:13,333 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:53:13,334 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:53:13,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:13 BoogieIcfgContainer [2020-07-28 17:53:13,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:53:13,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:53:13,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:53:13,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:53:13,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:53:12" (1/3) ... [2020-07-28 17:53:13,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b62270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:53:13, skipping insertion in model container [2020-07-28 17:53:13,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:12" (2/3) ... [2020-07-28 17:53:13,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b62270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:53:13, skipping insertion in model container [2020-07-28 17:53:13,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:13" (3/3) ... [2020-07-28 17:53:13,347 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a.c [2020-07-28 17:53:13,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:53:13,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:53:13,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:53:13,407 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:53:13,407 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:53:13,408 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:53:13,408 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:53:13,408 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:53:13,408 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:53:13,408 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:53:13,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:53:13,425 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-28 17:53:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 17:53:13,430 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:13,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:13,431 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:13,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:13,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1590452317, now seen corresponding path program 1 times [2020-07-28 17:53:13,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:53:13,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493572334] [2020-07-28 17:53:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:53:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:13,589 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {28#true} is VALID [2020-07-28 17:53:13,589 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#true} havoc main_#res;havoc main_#t~ret6, main_#t~ret7, main_#t~short8, main_~x~0, main_~res~0;main_~x~0 := 0.0;round_float_#in~x := main_~x~0;havoc round_float_#res;havoc round_float_#t~mem0, round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, round_float_~exponent_mask~0, round_float_#t~mem2, round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, round_float_~x, round_float_~w~0, round_float_~exponent_less_127~0;round_float_~x := round_float_#in~x;havoc round_float_~w~0;havoc round_float_~exponent_less_127~0; {28#true} is VALID [2020-07-28 17:53:13,592 INFO L280 TraceCheckUtils]: 2: Hoare triple {28#true} assume !true; {29#false} is VALID [2020-07-28 17:53:13,592 INFO L280 TraceCheckUtils]: 3: Hoare triple {29#false} round_float_~exponent_less_127~0 := (if ~bitwiseAnd(round_float_~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseAnd(round_float_~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 else ~bitwiseAnd(round_float_~w~0, 2139095040) / 8388608 % 4294967296 % 4294967296 - 4294967296) - 127; {29#false} is VALID [2020-07-28 17:53:13,593 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#false} assume !(round_float_~exponent_less_127~0 < 23); {29#false} is VALID [2020-07-28 17:53:13,593 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#false} assume 128 == round_float_~exponent_less_127~0;round_float_#res := ~someBinaryArithmeticFLOAToperation(round_float_~x, round_float_~x); {29#false} is VALID [2020-07-28 17:53:13,593 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#false} main_#t~ret6 := round_float_#res;main_~res~0 := main_#t~ret6;havoc main_#t~ret6;main_#t~short8 := ~someBinaryFLOATComparisonOperation(main_~res~0, 0.0); {29#false} is VALID [2020-07-28 17:53:13,594 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#false} assume !main_#t~short8; {29#false} is VALID [2020-07-28 17:53:13,594 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#false} assume !main_#t~short8;havoc main_#t~ret7;havoc main_#t~short8; {29#false} is VALID [2020-07-28 17:53:13,594 INFO L280 TraceCheckUtils]: 9: Hoare triple {29#false} assume !false; {29#false} is VALID [2020-07-28 17:53:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:13,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493572334] [2020-07-28 17:53:13,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:53:13,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:53:13,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929516718] [2020-07-28 17:53:13,608 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:53:13,609 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:53:13,614 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:53:13,641 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:13,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:53:13,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:53:13,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:53:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:53:13,657 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-07-28 17:53:13,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:13,740 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2020-07-28 17:53:13,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:53:13,740 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:53:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:53:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:53:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2020-07-28 17:53:13,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:53:13,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2020-07-28 17:53:13,765 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 72 transitions. [2020-07-28 17:53:13,895 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 72 edges. 72 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:13,907 INFO L225 Difference]: With dead ends: 48 [2020-07-28 17:53:13,907 INFO L226 Difference]: Without dead ends: 22 [2020-07-28 17:53:13,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:53:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-28 17:53:13,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-28 17:53:13,951 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:53:13,952 INFO L82 GeneralOperation]: Start isEquivalent. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:13,952 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:13,953 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:13,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:13,957 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-07-28 17:53:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-28 17:53:13,957 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:13,958 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:13,958 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:13,958 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:13,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:13,962 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-07-28 17:53:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-28 17:53:13,962 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:13,963 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:13,963 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:53:13,963 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:53:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-28 17:53:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-07-28 17:53:13,968 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 10 [2020-07-28 17:53:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:53:13,968 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-07-28 17:53:13,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:53:13,969 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-28 17:53:13,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 17:53:13,970 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:13,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:13,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:53:13,971 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:13,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:13,971 INFO L82 PathProgramCache]: Analyzing trace with hash -744854880, now seen corresponding path program 1 times [2020-07-28 17:53:13,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:53:13,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059918327] [2020-07-28 17:53:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:53:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:53:14,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:53:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:53:14,072 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:53:14,098 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:53:14,098 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:53:14,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:53:14,126 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:53:14,127 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:53:14,127 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-28 17:53:14,127 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-28 17:53:14,127 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:53:14,128 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:53:14,128 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 17:53:14,128 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:53:14,128 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:53:14,129 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-28 17:53:14,129 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-28 17:53:14,129 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-28 17:53:14,129 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-28 17:53:14,129 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-28 17:53:14,130 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-28 17:53:14,130 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-28 17:53:14,130 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-28 17:53:14,130 WARN L170 areAnnotationChecker]: L52 has no Hoare annotation [2020-07-28 17:53:14,131 WARN L170 areAnnotationChecker]: L47-1 has no Hoare annotation [2020-07-28 17:53:14,131 WARN L170 areAnnotationChecker]: L47-1 has no Hoare annotation [2020-07-28 17:53:14,131 WARN L170 areAnnotationChecker]: L79 has no Hoare annotation [2020-07-28 17:53:14,131 WARN L170 areAnnotationChecker]: L79 has no Hoare annotation [2020-07-28 17:53:14,131 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2020-07-28 17:53:14,132 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2020-07-28 17:53:14,132 WARN L170 areAnnotationChecker]: L47-2 has no Hoare annotation [2020-07-28 17:53:14,132 WARN L170 areAnnotationChecker]: L58-2 has no Hoare annotation [2020-07-28 17:53:14,132 WARN L170 areAnnotationChecker]: L58-2 has no Hoare annotation [2020-07-28 17:53:14,133 WARN L170 areAnnotationChecker]: L79-2 has no Hoare annotation [2020-07-28 17:53:14,133 WARN L170 areAnnotationChecker]: L79-2 has no Hoare annotation [2020-07-28 17:53:14,133 WARN L170 areAnnotationChecker]: L58-1 has no Hoare annotation [2020-07-28 17:53:14,133 WARN L170 areAnnotationChecker]: L58-1 has no Hoare annotation [2020-07-28 17:53:14,133 WARN L170 areAnnotationChecker]: L58-3 has no Hoare annotation [2020-07-28 17:53:14,134 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2020-07-28 17:53:14,134 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2020-07-28 17:53:14,134 WARN L170 areAnnotationChecker]: L84 has no Hoare annotation [2020-07-28 17:53:14,134 WARN L170 areAnnotationChecker]: L64 has no Hoare annotation [2020-07-28 17:53:14,135 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:53:14,135 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:53:14,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:53:14 BoogieIcfgContainer [2020-07-28 17:53:14,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:53:14,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:53:14,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:53:14,139 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:53:14,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:13" (3/4) ... [2020-07-28 17:53:14,143 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:53:14,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:53:14,147 INFO L168 Benchmark]: Toolchain (without parser) took 1751.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 956.2 MB in the beginning and 1.0 GB in the end (delta: -78.2 MB). Peak memory consumption was 51.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:14,148 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:53:14,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:14,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:14,151 INFO L168 Benchmark]: Boogie Preprocessor took 41.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:14,152 INFO L168 Benchmark]: RCFGBuilder took 472.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:14,153 INFO L168 Benchmark]: TraceAbstraction took 799.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:14,153 INFO L168 Benchmark]: Witness Printer took 4.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:53:14,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 362.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -169.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 472.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 799.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 43. Possible FailurePath: [L75] float x = 0.0f; [L13] __uint32_t w; [L15] int exponent_less_127; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L25] COND FALSE !(exponent_less_127 < 23) [L41] COND TRUE exponent_less_127 == 128 [L43] return x + x; [L76] float res = round_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:53:16,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:53:16,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:53:16,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:53:16,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:53:16,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:53:16,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:53:16,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:53:16,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:53:16,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:53:16,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:53:16,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:53:16,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:53:16,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:53:16,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:53:16,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:53:16,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:53:16,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:53:16,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:53:16,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:53:16,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:53:16,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:53:16,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:53:16,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:53:16,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:53:16,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:53:16,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:53:16,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:53:16,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:53:16,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:53:16,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:53:16,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:53:16,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:53:16,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:53:16,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:53:16,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:53:16,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:53:16,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:53:16,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:53:16,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:53:16,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:53:16,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:53:16,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:53:16,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:53:16,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:53:16,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:53:16,323 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:53:16,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:53:16,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:53:16,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:53:16,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:53:16,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:53:16,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:53:16,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:53:16,329 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:53:16,329 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:53:16,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:53:16,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:53:16,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:53:16,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:53:16,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:53:16,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:53:16,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:53:16,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:53:16,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:53:16,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:53:16,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:53:16,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:53:16,334 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:53:16,334 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:53:16,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:53:16,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:53:16,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:53:16,335 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(__VERIFIER_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 -> 9a3696439220bbea1d6ed5ed3b22aa10206af5de [2020-07-28 17:53:16,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:53:16,654 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:53:16,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:53:16,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:53:16,660 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:53:16,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2020-07-28 17:53:16,723 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd539b69/cfde618de9d64723a20ecf6df41000c7/FLAG98e058f49 [2020-07-28 17:53:17,238 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:53:17,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032a.c [2020-07-28 17:53:17,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd539b69/cfde618de9d64723a20ecf6df41000c7/FLAG98e058f49 [2020-07-28 17:53:17,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd539b69/cfde618de9d64723a20ecf6df41000c7 [2020-07-28 17:53:17,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:53:17,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:53:17,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:53:17,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:53:17,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:53:17,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:53:17" (1/1) ... [2020-07-28 17:53:17,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f9fbc7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:17, skipping insertion in model container [2020-07-28 17:53:17,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:53:17" (1/1) ... [2020-07-28 17:53:17,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:53:17,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:53:17,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:53:17,879 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:53:17,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:53:18,002 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:53:18,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18 WrapperNode [2020-07-28 17:53:18,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:53:18,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:53:18,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:53:18,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:53:18,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... [2020-07-28 17:53:18,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... [2020-07-28 17:53:18,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:53:18,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:53:18,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:53:18,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:53:18,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... [2020-07-28 17:53:18,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... [2020-07-28 17:53:18,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... [2020-07-28 17:53:18,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... [2020-07-28 17:53:18,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... [2020-07-28 17:53:18,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... [2020-07-28 17:53:18,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... [2020-07-28 17:53:18,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:53:18,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:53:18,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:53:18,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:53:18,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:53:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:53:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-07-28 17:53:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-07-28 17:53:18,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:53:18,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:53:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-07-28 17:53:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-07-28 17:53:18,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:53:18,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:53:18,655 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:53:18,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:18 BoogieIcfgContainer [2020-07-28 17:53:18,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:53:18,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:53:18,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:53:18,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:53:18,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:53:17" (1/3) ... [2020-07-28 17:53:18,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1dcb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:53:18, skipping insertion in model container [2020-07-28 17:53:18,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:53:18" (2/3) ... [2020-07-28 17:53:18,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1dcb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:53:18, skipping insertion in model container [2020-07-28 17:53:18,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:18" (3/3) ... [2020-07-28 17:53:18,668 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032a.c [2020-07-28 17:53:18,679 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:53:18,686 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:53:18,702 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:53:18,727 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:53:18,728 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:53:18,728 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:53:18,728 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:53:18,728 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:53:18,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:53:18,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:53:18,729 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:53:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-28 17:53:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 17:53:18,751 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:18,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:18,753 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:18,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1590452317, now seen corresponding path program 1 times [2020-07-28 17:53:18,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:53:18,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129467086] [2020-07-28 17:53:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-07-28 17:53:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:18,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:53:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:18,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:53:18,964 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {28#true} is VALID [2020-07-28 17:53:18,965 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#true} havoc main_#res;havoc main_#t~ret6, main_#t~ret7, main_#t~short8, main_~x~0, main_~res~0;main_~x~0 := ~Pluszero~FLOAT();round_float_#in~x := main_~x~0;havoc round_float_#res;havoc round_float_#t~mem0, round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, round_float_~exponent_mask~0, round_float_#t~mem2, round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, round_float_~x, round_float_~w~0, round_float_~exponent_less_127~0;round_float_~x := round_float_#in~x;havoc round_float_~w~0;havoc round_float_~exponent_less_127~0; {28#true} is VALID [2020-07-28 17:53:18,966 INFO L280 TraceCheckUtils]: 2: Hoare triple {28#true} assume !true; {29#false} is VALID [2020-07-28 17:53:18,967 INFO L280 TraceCheckUtils]: 3: Hoare triple {29#false} round_float_~exponent_less_127~0 := ~bvsub32(~bvlshr32(~bvand32(2139095040bv32, round_float_~w~0), 23bv32), 127bv32); {29#false} is VALID [2020-07-28 17:53:18,967 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#false} assume !~bvslt32(round_float_~exponent_less_127~0, 23bv32); {29#false} is VALID [2020-07-28 17:53:18,967 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#false} assume 128bv32 == round_float_~exponent_less_127~0;round_float_#res := ~fp.add~FLOAT(currentRoundingMode, round_float_~x, round_float_~x); {29#false} is VALID [2020-07-28 17:53:18,968 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#false} main_#t~ret6 := round_float_#res;main_~res~0 := main_#t~ret6;havoc main_#t~ret6;main_#t~short8 := ~fp.eq~FLOAT(main_~res~0, ~Pluszero~FLOAT()); {29#false} is VALID [2020-07-28 17:53:18,968 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#false} assume !main_#t~short8; {29#false} is VALID [2020-07-28 17:53:18,969 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#false} assume !main_#t~short8;havoc main_#t~ret7;havoc main_#t~short8; {29#false} is VALID [2020-07-28 17:53:18,969 INFO L280 TraceCheckUtils]: 9: Hoare triple {29#false} assume !false; {29#false} is VALID [2020-07-28 17:53:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:18,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:53:18,998 INFO L280 TraceCheckUtils]: 9: Hoare triple {29#false} assume !false; {29#false} is VALID [2020-07-28 17:53:18,999 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#false} assume !main_#t~short8;havoc main_#t~ret7;havoc main_#t~short8; {29#false} is VALID [2020-07-28 17:53:18,999 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#false} assume !main_#t~short8; {29#false} is VALID [2020-07-28 17:53:18,999 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#false} main_#t~ret6 := round_float_#res;main_~res~0 := main_#t~ret6;havoc main_#t~ret6;main_#t~short8 := ~fp.eq~FLOAT(main_~res~0, ~Pluszero~FLOAT()); {29#false} is VALID [2020-07-28 17:53:19,000 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#false} assume 128bv32 == round_float_~exponent_less_127~0;round_float_#res := ~fp.add~FLOAT(currentRoundingMode, round_float_~x, round_float_~x); {29#false} is VALID [2020-07-28 17:53:19,000 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#false} assume !~bvslt32(round_float_~exponent_less_127~0, 23bv32); {29#false} is VALID [2020-07-28 17:53:19,001 INFO L280 TraceCheckUtils]: 3: Hoare triple {29#false} round_float_~exponent_less_127~0 := ~bvsub32(~bvlshr32(~bvand32(2139095040bv32, round_float_~w~0), 23bv32), 127bv32); {29#false} is VALID [2020-07-28 17:53:19,003 INFO L280 TraceCheckUtils]: 2: Hoare triple {28#true} assume !true; {29#false} is VALID [2020-07-28 17:53:19,003 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#true} havoc main_#res;havoc main_#t~ret6, main_#t~ret7, main_#t~short8, main_~x~0, main_~res~0;main_~x~0 := ~Pluszero~FLOAT();round_float_#in~x := main_~x~0;havoc round_float_#res;havoc round_float_#t~mem0, round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, round_float_~exponent_mask~0, round_float_#t~mem2, round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, round_float_~x, round_float_~w~0, round_float_~exponent_less_127~0;round_float_~x := round_float_#in~x;havoc round_float_~w~0;havoc round_float_~exponent_less_127~0; {28#true} is VALID [2020-07-28 17:53:19,003 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {28#true} is VALID [2020-07-28 17:53:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:19,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129467086] [2020-07-28 17:53:19,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:53:19,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:53:19,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570499134] [2020-07-28 17:53:19,023 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:53:19,026 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:53:19,030 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:53:19,078 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:19,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:53:19,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:53:19,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:53:19,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:53:19,091 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-07-28 17:53:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:19,217 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2020-07-28 17:53:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:53:19,217 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-28 17:53:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:53:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:53:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2020-07-28 17:53:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:53:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2020-07-28 17:53:19,242 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 72 transitions. [2020-07-28 17:53:19,417 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 72 edges. 72 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:19,429 INFO L225 Difference]: With dead ends: 48 [2020-07-28 17:53:19,429 INFO L226 Difference]: Without dead ends: 22 [2020-07-28 17:53:19,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:53:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-28 17:53:19,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-28 17:53:19,467 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:53:19,468 INFO L82 GeneralOperation]: Start isEquivalent. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:19,469 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:19,469 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:19,473 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-07-28 17:53:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-28 17:53:19,473 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:19,473 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:19,474 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:19,474 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 22 states. [2020-07-28 17:53:19,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:19,477 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-07-28 17:53:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-28 17:53:19,478 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:19,478 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:19,478 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:53:19,478 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:53:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-28 17:53:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-07-28 17:53:19,482 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 10 [2020-07-28 17:53:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:53:19,483 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-07-28 17:53:19,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:53:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-07-28 17:53:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 17:53:19,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:19,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:19,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:53:19,699 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:19,700 INFO L82 PathProgramCache]: Analyzing trace with hash -744854880, now seen corresponding path program 1 times [2020-07-28 17:53:19,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:53:19,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606520908] [2020-07-28 17:53:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-07-28 17:53:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:19,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-28 17:53:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:19,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:53:19,932 INFO L280 TraceCheckUtils]: 0: Hoare triple {214#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {214#true} is VALID [2020-07-28 17:53:19,933 INFO L280 TraceCheckUtils]: 1: Hoare triple {214#true} havoc main_#res;havoc main_#t~ret6, main_#t~ret7, main_#t~short8, main_~x~0, main_~res~0;main_~x~0 := ~Pluszero~FLOAT();round_float_#in~x := main_~x~0;havoc round_float_#res;havoc round_float_#t~mem0, round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, round_float_~exponent_mask~0, round_float_#t~mem2, round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, round_float_~x, round_float_~w~0, round_float_~exponent_less_127~0;round_float_~x := round_float_#in~x;havoc round_float_~w~0;havoc round_float_~exponent_less_127~0; {222#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} is VALID [2020-07-28 17:53:19,943 INFO L280 TraceCheckUtils]: 2: Hoare triple {222#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} call round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(round_float_~x, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);call round_float_#t~mem0 := read~intINTTYPE4(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);round_float_~w~0 := round_float_#t~mem0;call write~intFLOATTYPE4(round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);havoc round_float_#t~mem0;havoc round_float_#t~union1;call ULTIMATE.dealloc(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset);havoc round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset; {226#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:19,944 INFO L280 TraceCheckUtils]: 3: Hoare triple {226#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} goto; {226#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:19,947 INFO L280 TraceCheckUtils]: 4: Hoare triple {226#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} round_float_~exponent_less_127~0 := ~bvsub32(~bvlshr32(~bvand32(2139095040bv32, round_float_~w~0), 23bv32), 127bv32); {233#(exists ((ULTIMATE.start_round_float_~w~0 (_ BitVec 32))) (and (= (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_round_float_~exponent_less_127~0) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:53:19,951 INFO L280 TraceCheckUtils]: 5: Hoare triple {233#(exists ((ULTIMATE.start_round_float_~w~0 (_ BitVec 32))) (and (= (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_round_float_~exponent_less_127~0) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))))} assume !~bvslt32(round_float_~exponent_less_127~0, 23bv32); {215#false} is VALID [2020-07-28 17:53:19,951 INFO L280 TraceCheckUtils]: 6: Hoare triple {215#false} assume 128bv32 == round_float_~exponent_less_127~0;round_float_#res := ~fp.add~FLOAT(currentRoundingMode, round_float_~x, round_float_~x); {215#false} is VALID [2020-07-28 17:53:19,951 INFO L280 TraceCheckUtils]: 7: Hoare triple {215#false} main_#t~ret6 := round_float_#res;main_~res~0 := main_#t~ret6;havoc main_#t~ret6;main_#t~short8 := ~fp.eq~FLOAT(main_~res~0, ~Pluszero~FLOAT()); {215#false} is VALID [2020-07-28 17:53:19,952 INFO L280 TraceCheckUtils]: 8: Hoare triple {215#false} assume !main_#t~short8; {215#false} is VALID [2020-07-28 17:53:19,952 INFO L280 TraceCheckUtils]: 9: Hoare triple {215#false} assume !main_#t~short8;havoc main_#t~ret7;havoc main_#t~short8; {215#false} is VALID [2020-07-28 17:53:19,952 INFO L280 TraceCheckUtils]: 10: Hoare triple {215#false} assume !false; {215#false} is VALID [2020-07-28 17:53:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:19,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:53:20,094 INFO L280 TraceCheckUtils]: 10: Hoare triple {215#false} assume !false; {215#false} is VALID [2020-07-28 17:53:20,094 INFO L280 TraceCheckUtils]: 9: Hoare triple {215#false} assume !main_#t~short8;havoc main_#t~ret7;havoc main_#t~short8; {215#false} is VALID [2020-07-28 17:53:20,095 INFO L280 TraceCheckUtils]: 8: Hoare triple {215#false} assume !main_#t~short8; {215#false} is VALID [2020-07-28 17:53:20,095 INFO L280 TraceCheckUtils]: 7: Hoare triple {215#false} main_#t~ret6 := round_float_#res;main_~res~0 := main_#t~ret6;havoc main_#t~ret6;main_#t~short8 := ~fp.eq~FLOAT(main_~res~0, ~Pluszero~FLOAT()); {215#false} is VALID [2020-07-28 17:53:20,095 INFO L280 TraceCheckUtils]: 6: Hoare triple {215#false} assume 128bv32 == round_float_~exponent_less_127~0;round_float_#res := ~fp.add~FLOAT(currentRoundingMode, round_float_~x, round_float_~x); {215#false} is VALID [2020-07-28 17:53:20,096 INFO L280 TraceCheckUtils]: 5: Hoare triple {267#(bvslt ULTIMATE.start_round_float_~exponent_less_127~0 (_ bv23 32))} assume !~bvslt32(round_float_~exponent_less_127~0, 23bv32); {215#false} is VALID [2020-07-28 17:53:20,097 INFO L280 TraceCheckUtils]: 4: Hoare triple {271#(bvslt (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32))} round_float_~exponent_less_127~0 := ~bvsub32(~bvlshr32(~bvand32(2139095040bv32, round_float_~w~0), 23bv32), 127bv32); {267#(bvslt ULTIMATE.start_round_float_~exponent_less_127~0 (_ bv23 32))} is VALID [2020-07-28 17:53:20,098 INFO L280 TraceCheckUtils]: 3: Hoare triple {271#(bvslt (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32))} goto; {271#(bvslt (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32))} is VALID [2020-07-28 17:53:20,105 INFO L280 TraceCheckUtils]: 2: Hoare triple {278#(forall ((|v_skolemized_q#valueAsBitvector_5| (_ BitVec 32))) (or (bvslt (bvadd (bvlshr (bvand (_ bv2139095040 32) |v_skolemized_q#valueAsBitvector_5|) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32)) (not (= ULTIMATE.start_round_float_~x (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_5|))))))} call round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(round_float_~x, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);call round_float_#t~mem0 := read~intINTTYPE4(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);round_float_~w~0 := round_float_#t~mem0;call write~intFLOATTYPE4(round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);havoc round_float_#t~mem0;havoc round_float_#t~union1;call ULTIMATE.dealloc(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset);havoc round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset; {271#(bvslt (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32))} is VALID [2020-07-28 17:53:20,108 INFO L280 TraceCheckUtils]: 1: Hoare triple {214#true} havoc main_#res;havoc main_#t~ret6, main_#t~ret7, main_#t~short8, main_~x~0, main_~res~0;main_~x~0 := ~Pluszero~FLOAT();round_float_#in~x := main_~x~0;havoc round_float_#res;havoc round_float_#t~mem0, round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, round_float_~exponent_mask~0, round_float_#t~mem2, round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, round_float_~x, round_float_~w~0, round_float_~exponent_less_127~0;round_float_~x := round_float_#in~x;havoc round_float_~w~0;havoc round_float_~exponent_less_127~0; {278#(forall ((|v_skolemized_q#valueAsBitvector_5| (_ BitVec 32))) (or (bvslt (bvadd (bvlshr (bvand (_ bv2139095040 32) |v_skolemized_q#valueAsBitvector_5|) (_ bv23 32)) (_ bv4294967169 32)) (_ bv23 32)) (not (= ULTIMATE.start_round_float_~x (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_5|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_5|))))))} is VALID [2020-07-28 17:53:20,108 INFO L280 TraceCheckUtils]: 0: Hoare triple {214#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {214#true} is VALID [2020-07-28 17:53:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:20,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606520908] [2020-07-28 17:53:20,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:53:20,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-07-28 17:53:20,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661947279] [2020-07-28 17:53:20,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-07-28 17:53:20,113 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:53:20,113 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-28 17:53:20,164 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:20,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-28 17:53:20,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:53:20,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-28 17:53:20,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-28 17:53:20,166 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 8 states. [2020-07-28 17:53:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:20,538 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-07-28 17:53:20,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-28 17:53:20,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-07-28 17:53:20,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:53:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:53:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2020-07-28 17:53:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:53:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2020-07-28 17:53:20,544 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 39 transitions. [2020-07-28 17:53:20,666 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:20,667 INFO L225 Difference]: With dead ends: 34 [2020-07-28 17:53:20,667 INFO L226 Difference]: Without dead ends: 20 [2020-07-28 17:53:20,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-07-28 17:53:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-28 17:53:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-28 17:53:20,680 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:53:20,680 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:20,681 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:20,681 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:20,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:20,683 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-28 17:53:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-28 17:53:20,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:20,684 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:20,684 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:20,685 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:20,687 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-07-28 17:53:20,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-28 17:53:20,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:20,688 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:20,688 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:53:20,689 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:53:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-28 17:53:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-07-28 17:53:20,691 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2020-07-28 17:53:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:53:20,691 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-07-28 17:53:20,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-28 17:53:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-28 17:53:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 17:53:20,693 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:20,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:20,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:53:20,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:20,909 INFO L82 PathProgramCache]: Analyzing trace with hash 3095257, now seen corresponding path program 1 times [2020-07-28 17:53:20,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:53:20,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481463496] [2020-07-28 17:53:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-07-28 17:53:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:20,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-28 17:53:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:20,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:53:21,123 INFO L280 TraceCheckUtils]: 0: Hoare triple {393#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {393#true} is VALID [2020-07-28 17:53:21,125 INFO L280 TraceCheckUtils]: 1: Hoare triple {393#true} havoc main_#res;havoc main_#t~ret6, main_#t~ret7, main_#t~short8, main_~x~0, main_~res~0;main_~x~0 := ~Pluszero~FLOAT();round_float_#in~x := main_~x~0;havoc round_float_#res;havoc round_float_#t~mem0, round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, round_float_~exponent_mask~0, round_float_#t~mem2, round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, round_float_~x, round_float_~w~0, round_float_~exponent_less_127~0;round_float_~x := round_float_#in~x;havoc round_float_~w~0;havoc round_float_~exponent_less_127~0; {401#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,128 INFO L280 TraceCheckUtils]: 2: Hoare triple {401#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} call round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(round_float_~x, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);call round_float_#t~mem0 := read~intINTTYPE4(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);round_float_~w~0 := round_float_#t~mem0;call write~intFLOATTYPE4(round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);havoc round_float_#t~mem0;havoc round_float_#t~union1;call ULTIMATE.dealloc(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset);havoc round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset; {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,129 INFO L280 TraceCheckUtils]: 3: Hoare triple {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} goto; {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,130 INFO L280 TraceCheckUtils]: 4: Hoare triple {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} round_float_~exponent_less_127~0 := ~bvsub32(~bvlshr32(~bvand32(2139095040bv32, round_float_~w~0), 23bv32), 127bv32); {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,132 INFO L280 TraceCheckUtils]: 5: Hoare triple {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} assume ~bvslt32(round_float_~exponent_less_127~0, 23bv32); {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,134 INFO L280 TraceCheckUtils]: 6: Hoare triple {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} assume ~bvslt32(round_float_~exponent_less_127~0, 0bv32);round_float_~w~0 := ~bvand32(2147483648bv32, round_float_~w~0); {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,135 INFO L280 TraceCheckUtils]: 7: Hoare triple {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} assume !(4294967295bv32 == round_float_~exponent_less_127~0); {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,137 INFO L280 TraceCheckUtils]: 8: Hoare triple {405#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} call round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(round_float_~w~0, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);call round_float_#t~mem2 := read~intFLOATTYPE4(round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);round_float_~x := round_float_#t~mem2;call write~intINTTYPE4(round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);havoc round_float_#t~union3;havoc round_float_#t~mem2;call ULTIMATE.dealloc(round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset);havoc round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset; {401#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,139 INFO L280 TraceCheckUtils]: 9: Hoare triple {401#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} goto; {401#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,144 INFO L280 TraceCheckUtils]: 10: Hoare triple {401#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} round_float_#res := round_float_~x; {430#(= (_ +zero 8 24) |ULTIMATE.start_round_float_#res|)} is VALID [2020-07-28 17:53:21,146 INFO L280 TraceCheckUtils]: 11: Hoare triple {430#(= (_ +zero 8 24) |ULTIMATE.start_round_float_#res|)} main_#t~ret6 := round_float_#res;main_~res~0 := main_#t~ret6;havoc main_#t~ret6;main_#t~short8 := ~fp.eq~FLOAT(main_~res~0, ~Pluszero~FLOAT()); {434#|ULTIMATE.start_main_#t~short8|} is VALID [2020-07-28 17:53:21,151 INFO L280 TraceCheckUtils]: 12: Hoare triple {434#|ULTIMATE.start_main_#t~short8|} assume !main_#t~short8; {434#|ULTIMATE.start_main_#t~short8|} is VALID [2020-07-28 17:53:21,153 INFO L280 TraceCheckUtils]: 13: Hoare triple {434#|ULTIMATE.start_main_#t~short8|} assume !main_#t~short8;havoc main_#t~ret7;havoc main_#t~short8; {394#false} is VALID [2020-07-28 17:53:21,153 INFO L280 TraceCheckUtils]: 14: Hoare triple {394#false} assume !false; {394#false} is VALID [2020-07-28 17:53:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:21,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:53:21,240 INFO L280 TraceCheckUtils]: 14: Hoare triple {394#false} assume !false; {394#false} is VALID [2020-07-28 17:53:21,243 INFO L280 TraceCheckUtils]: 13: Hoare triple {434#|ULTIMATE.start_main_#t~short8|} assume !main_#t~short8;havoc main_#t~ret7;havoc main_#t~short8; {394#false} is VALID [2020-07-28 17:53:21,243 INFO L280 TraceCheckUtils]: 12: Hoare triple {434#|ULTIMATE.start_main_#t~short8|} assume !main_#t~short8; {434#|ULTIMATE.start_main_#t~short8|} is VALID [2020-07-28 17:53:21,244 INFO L280 TraceCheckUtils]: 11: Hoare triple {453#(fp.eq |ULTIMATE.start_round_float_#res| (_ +zero 8 24))} main_#t~ret6 := round_float_#res;main_~res~0 := main_#t~ret6;havoc main_#t~ret6;main_#t~short8 := ~fp.eq~FLOAT(main_~res~0, ~Pluszero~FLOAT()); {434#|ULTIMATE.start_main_#t~short8|} is VALID [2020-07-28 17:53:21,246 INFO L280 TraceCheckUtils]: 10: Hoare triple {457#(fp.eq ULTIMATE.start_round_float_~x (_ +zero 8 24))} round_float_#res := round_float_~x; {453#(fp.eq |ULTIMATE.start_round_float_#res| (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,246 INFO L280 TraceCheckUtils]: 9: Hoare triple {457#(fp.eq ULTIMATE.start_round_float_~x (_ +zero 8 24))} goto; {457#(fp.eq ULTIMATE.start_round_float_~x (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,248 INFO L280 TraceCheckUtils]: 8: Hoare triple {464#(fp.eq (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} call round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(round_float_~w~0, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);call round_float_#t~mem2 := read~intFLOATTYPE4(round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);round_float_~x := round_float_#t~mem2;call write~intINTTYPE4(round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);havoc round_float_#t~union3;havoc round_float_#t~mem2;call ULTIMATE.dealloc(round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset);havoc round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset; {457#(fp.eq ULTIMATE.start_round_float_~x (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,249 INFO L280 TraceCheckUtils]: 7: Hoare triple {464#(fp.eq (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} assume !(4294967295bv32 == round_float_~exponent_less_127~0); {464#(fp.eq (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,250 INFO L280 TraceCheckUtils]: 6: Hoare triple {393#true} assume ~bvslt32(round_float_~exponent_less_127~0, 0bv32);round_float_~w~0 := ~bvand32(2147483648bv32, round_float_~w~0); {464#(fp.eq (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:21,251 INFO L280 TraceCheckUtils]: 5: Hoare triple {393#true} assume ~bvslt32(round_float_~exponent_less_127~0, 23bv32); {393#true} is VALID [2020-07-28 17:53:21,251 INFO L280 TraceCheckUtils]: 4: Hoare triple {393#true} round_float_~exponent_less_127~0 := ~bvsub32(~bvlshr32(~bvand32(2139095040bv32, round_float_~w~0), 23bv32), 127bv32); {393#true} is VALID [2020-07-28 17:53:21,251 INFO L280 TraceCheckUtils]: 3: Hoare triple {393#true} goto; {393#true} is VALID [2020-07-28 17:53:21,251 INFO L280 TraceCheckUtils]: 2: Hoare triple {393#true} call round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(round_float_~x, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);call round_float_#t~mem0 := read~intINTTYPE4(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);round_float_~w~0 := round_float_#t~mem0;call write~intFLOATTYPE4(round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);havoc round_float_#t~mem0;havoc round_float_#t~union1;call ULTIMATE.dealloc(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset);havoc round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset; {393#true} is VALID [2020-07-28 17:53:21,252 INFO L280 TraceCheckUtils]: 1: Hoare triple {393#true} havoc main_#res;havoc main_#t~ret6, main_#t~ret7, main_#t~short8, main_~x~0, main_~res~0;main_~x~0 := ~Pluszero~FLOAT();round_float_#in~x := main_~x~0;havoc round_float_#res;havoc round_float_#t~mem0, round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, round_float_~exponent_mask~0, round_float_#t~mem2, round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, round_float_~x, round_float_~w~0, round_float_~exponent_less_127~0;round_float_~x := round_float_#in~x;havoc round_float_~w~0;havoc round_float_~exponent_less_127~0; {393#true} is VALID [2020-07-28 17:53:21,252 INFO L280 TraceCheckUtils]: 0: Hoare triple {393#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {393#true} is VALID [2020-07-28 17:53:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:21,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481463496] [2020-07-28 17:53:21,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:53:21,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-07-28 17:53:21,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861610744] [2020-07-28 17:53:21,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-07-28 17:53:21,255 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:53:21,255 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-28 17:53:21,310 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:21,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-28 17:53:21,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:53:21,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-28 17:53:21,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-28 17:53:21,312 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2020-07-28 17:53:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:21,609 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-07-28 17:53:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-28 17:53:21,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-07-28 17:53:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:53:21,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-28 17:53:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2020-07-28 17:53:21,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-28 17:53:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 22 transitions. [2020-07-28 17:53:21,612 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 22 transitions. [2020-07-28 17:53:21,664 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:21,666 INFO L225 Difference]: With dead ends: 23 [2020-07-28 17:53:21,666 INFO L226 Difference]: Without dead ends: 20 [2020-07-28 17:53:21,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-07-28 17:53:21,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-28 17:53:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-28 17:53:21,683 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:53:21,683 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:21,683 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:21,684 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:21,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:21,686 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-07-28 17:53:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-07-28 17:53:21,687 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:21,687 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:21,687 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:21,688 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 17:53:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:21,690 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-07-28 17:53:21,690 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-07-28 17:53:21,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:21,691 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:21,691 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:53:21,691 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:53:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-28 17:53:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-07-28 17:53:21,693 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 15 [2020-07-28 17:53:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:53:21,694 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-07-28 17:53:21,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-28 17:53:21,694 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-07-28 17:53:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-28 17:53:21,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:53:21,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:53:21,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-07-28 17:53:21,908 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:53:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:53:21,909 INFO L82 PathProgramCache]: Analyzing trace with hash -318448082, now seen corresponding path program 1 times [2020-07-28 17:53:21,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:53:21,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489752432] [2020-07-28 17:53:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-07-28 17:53:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:21,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-28 17:53:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:53:21,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:53:22,139 INFO L523 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-28 17:53:22,177 INFO L280 TraceCheckUtils]: 0: Hoare triple {586#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {586#true} is VALID [2020-07-28 17:53:22,178 INFO L280 TraceCheckUtils]: 1: Hoare triple {586#true} havoc main_#res;havoc main_#t~ret6, main_#t~ret7, main_#t~short8, main_~x~0, main_~res~0;main_~x~0 := ~Pluszero~FLOAT();round_float_#in~x := main_~x~0;havoc round_float_#res;havoc round_float_#t~mem0, round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, round_float_~exponent_mask~0, round_float_#t~mem2, round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, round_float_~x, round_float_~w~0, round_float_~exponent_less_127~0;round_float_~x := round_float_#in~x;havoc round_float_~w~0;havoc round_float_~exponent_less_127~0; {594#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} is VALID [2020-07-28 17:53:22,181 INFO L280 TraceCheckUtils]: 2: Hoare triple {594#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} call round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(round_float_~x, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);call round_float_#t~mem0 := read~intINTTYPE4(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);round_float_~w~0 := round_float_#t~mem0;call write~intFLOATTYPE4(round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);havoc round_float_#t~mem0;havoc round_float_#t~union1;call ULTIMATE.dealloc(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset);havoc round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset; {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:22,182 INFO L280 TraceCheckUtils]: 3: Hoare triple {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} goto; {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:22,183 INFO L280 TraceCheckUtils]: 4: Hoare triple {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} round_float_~exponent_less_127~0 := ~bvsub32(~bvlshr32(~bvand32(2139095040bv32, round_float_~w~0), 23bv32), 127bv32); {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:22,184 INFO L280 TraceCheckUtils]: 5: Hoare triple {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} assume ~bvslt32(round_float_~exponent_less_127~0, 23bv32); {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:22,185 INFO L280 TraceCheckUtils]: 6: Hoare triple {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} assume ~bvslt32(round_float_~exponent_less_127~0, 0bv32);round_float_~w~0 := ~bvand32(2147483648bv32, round_float_~w~0); {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:22,186 INFO L280 TraceCheckUtils]: 7: Hoare triple {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} assume !(4294967295bv32 == round_float_~exponent_less_127~0); {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} is VALID [2020-07-28 17:53:22,187 INFO L280 TraceCheckUtils]: 8: Hoare triple {598#(= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))} call round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(round_float_~w~0, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);call round_float_#t~mem2 := read~intFLOATTYPE4(round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);round_float_~x := round_float_#t~mem2;call write~intINTTYPE4(round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);havoc round_float_#t~union3;havoc round_float_#t~mem2;call ULTIMATE.dealloc(round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset);havoc round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset; {594#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} is VALID [2020-07-28 17:53:22,188 INFO L280 TraceCheckUtils]: 9: Hoare triple {594#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} goto; {594#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} is VALID [2020-07-28 17:53:22,189 INFO L280 TraceCheckUtils]: 10: Hoare triple {594#(= ULTIMATE.start_round_float_~x (_ +zero 8 24))} round_float_#res := round_float_~x; {623#(= (_ +zero 8 24) |ULTIMATE.start_round_float_#res|)} is VALID [2020-07-28 17:53:22,189 INFO L280 TraceCheckUtils]: 11: Hoare triple {623#(= (_ +zero 8 24) |ULTIMATE.start_round_float_#res|)} main_#t~ret6 := round_float_#res;main_~res~0 := main_#t~ret6;havoc main_#t~ret6;main_#t~short8 := ~fp.eq~FLOAT(main_~res~0, ~Pluszero~FLOAT()); {627#(= (_ +zero 8 24) ULTIMATE.start_main_~res~0)} is VALID [2020-07-28 17:53:22,190 INFO L280 TraceCheckUtils]: 12: Hoare triple {627#(= (_ +zero 8 24) ULTIMATE.start_main_~res~0)} assume main_#t~short8;__signbit_float_#in~x := main_~res~0;havoc __signbit_float_#res;havoc __signbit_float_#t~mem4, __signbit_float_#t~union5, __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset, __signbit_float_~x, __signbit_float_~w~1;__signbit_float_~x := __signbit_float_#in~x;havoc __signbit_float_~w~1; {631#(= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x)} is VALID [2020-07-28 17:53:22,193 INFO L280 TraceCheckUtils]: 13: Hoare triple {631#(= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x)} call __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(__signbit_float_~x, __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset, 4bv32);call __signbit_float_#t~mem4 := read~intINTTYPE4(__signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset, 4bv32);__signbit_float_~w~1 := __signbit_float_#t~mem4;call write~intFLOATTYPE4(__signbit_float_#t~union5, __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset, 4bv32);havoc __signbit_float_#t~mem4;havoc __signbit_float_#t~union5;call ULTIMATE.dealloc(__signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset);havoc __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset; {635#(= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))} is VALID [2020-07-28 17:53:22,194 INFO L280 TraceCheckUtils]: 14: Hoare triple {635#(= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))} goto; {635#(= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))} is VALID [2020-07-28 17:53:22,195 INFO L280 TraceCheckUtils]: 15: Hoare triple {635#(= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))} __signbit_float_#res := (if 0bv32 != ~bvand32(2147483648bv32, __signbit_float_~w~1) then 1bv32 else 0bv32); {642#(= |ULTIMATE.start___signbit_float_#res| (_ bv0 32))} is VALID [2020-07-28 17:53:22,196 INFO L280 TraceCheckUtils]: 16: Hoare triple {642#(= |ULTIMATE.start___signbit_float_#res| (_ bv0 32))} main_#t~ret7 := __signbit_float_#res;main_#t~short8 := 0bv32 == main_#t~ret7; {646#|ULTIMATE.start_main_#t~short8|} is VALID [2020-07-28 17:53:22,197 INFO L280 TraceCheckUtils]: 17: Hoare triple {646#|ULTIMATE.start_main_#t~short8|} assume !main_#t~short8;havoc main_#t~ret7;havoc main_#t~short8; {587#false} is VALID [2020-07-28 17:53:22,197 INFO L280 TraceCheckUtils]: 18: Hoare triple {587#false} assume !false; {587#false} is VALID [2020-07-28 17:53:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:22,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:53:22,780 INFO L280 TraceCheckUtils]: 18: Hoare triple {587#false} assume !false; {587#false} is VALID [2020-07-28 17:53:22,781 INFO L280 TraceCheckUtils]: 17: Hoare triple {646#|ULTIMATE.start_main_#t~short8|} assume !main_#t~short8;havoc main_#t~ret7;havoc main_#t~short8; {587#false} is VALID [2020-07-28 17:53:22,783 INFO L280 TraceCheckUtils]: 16: Hoare triple {642#(= |ULTIMATE.start___signbit_float_#res| (_ bv0 32))} main_#t~ret7 := __signbit_float_#res;main_#t~short8 := 0bv32 == main_#t~ret7; {646#|ULTIMATE.start_main_#t~short8|} is VALID [2020-07-28 17:53:22,784 INFO L280 TraceCheckUtils]: 15: Hoare triple {662#(= (bvand (_ bv2147483648 32) ULTIMATE.start___signbit_float_~w~1) (_ bv0 32))} __signbit_float_#res := (if 0bv32 != ~bvand32(2147483648bv32, __signbit_float_~w~1) then 1bv32 else 0bv32); {642#(= |ULTIMATE.start___signbit_float_#res| (_ bv0 32))} is VALID [2020-07-28 17:53:22,785 INFO L280 TraceCheckUtils]: 14: Hoare triple {662#(= (bvand (_ bv2147483648 32) ULTIMATE.start___signbit_float_~w~1) (_ bv0 32))} goto; {662#(= (bvand (_ bv2147483648 32) ULTIMATE.start___signbit_float_~w~1) (_ bv0 32))} is VALID [2020-07-28 17:53:22,788 INFO L280 TraceCheckUtils]: 13: Hoare triple {669#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) ULTIMATE.start___signbit_float_~x)) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} call __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(__signbit_float_~x, __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset, 4bv32);call __signbit_float_#t~mem4 := read~intINTTYPE4(__signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset, 4bv32);__signbit_float_~w~1 := __signbit_float_#t~mem4;call write~intFLOATTYPE4(__signbit_float_#t~union5, __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset, 4bv32);havoc __signbit_float_#t~mem4;havoc __signbit_float_#t~union5;call ULTIMATE.dealloc(__signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset);havoc __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset; {662#(= (bvand (_ bv2147483648 32) ULTIMATE.start___signbit_float_~w~1) (_ bv0 32))} is VALID [2020-07-28 17:53:22,790 INFO L280 TraceCheckUtils]: 12: Hoare triple {673#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= ULTIMATE.start_main_~res~0 (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} assume main_#t~short8;__signbit_float_#in~x := main_~res~0;havoc __signbit_float_#res;havoc __signbit_float_#t~mem4, __signbit_float_#t~union5, __signbit_float_~#gf_u~1.base, __signbit_float_~#gf_u~1.offset, __signbit_float_~x, __signbit_float_~w~1;__signbit_float_~x := __signbit_float_#in~x;havoc __signbit_float_~w~1; {669#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) ULTIMATE.start___signbit_float_~x)) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} is VALID [2020-07-28 17:53:22,793 INFO L280 TraceCheckUtils]: 11: Hoare triple {677#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) |ULTIMATE.start_round_float_#res|)) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} main_#t~ret6 := round_float_#res;main_~res~0 := main_#t~ret6;havoc main_#t~ret6;main_#t~short8 := ~fp.eq~FLOAT(main_~res~0, ~Pluszero~FLOAT()); {673#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= ULTIMATE.start_main_~res~0 (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} is VALID [2020-07-28 17:53:22,795 INFO L280 TraceCheckUtils]: 10: Hoare triple {681#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= ULTIMATE.start_round_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} round_float_#res := round_float_~x; {677#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) |ULTIMATE.start_round_float_#res|)) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} is VALID [2020-07-28 17:53:22,797 INFO L280 TraceCheckUtils]: 9: Hoare triple {681#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= ULTIMATE.start_round_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} goto; {681#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= ULTIMATE.start_round_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} is VALID [2020-07-28 17:53:22,798 INFO L280 TraceCheckUtils]: 8: Hoare triple {688#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} call round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(round_float_~w~0, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);call round_float_#t~mem2 := read~intFLOATTYPE4(round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);round_float_~x := round_float_#t~mem2;call write~intINTTYPE4(round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, 4bv32);havoc round_float_#t~union3;havoc round_float_#t~mem2;call ULTIMATE.dealloc(round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset);havoc round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset; {681#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= ULTIMATE.start_round_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} is VALID [2020-07-28 17:53:22,799 INFO L280 TraceCheckUtils]: 7: Hoare triple {688#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} assume !(4294967295bv32 == round_float_~exponent_less_127~0); {688#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} is VALID [2020-07-28 17:53:22,801 INFO L280 TraceCheckUtils]: 6: Hoare triple {695#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) (fp ((_ extract 31 31) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 30 23) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 22 0) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0))))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} assume ~bvslt32(round_float_~exponent_less_127~0, 0bv32);round_float_~w~0 := ~bvand32(2147483648bv32, round_float_~w~0); {688#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} is VALID [2020-07-28 17:53:22,802 INFO L280 TraceCheckUtils]: 5: Hoare triple {695#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) (fp ((_ extract 31 31) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 30 23) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 22 0) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0))))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} assume ~bvslt32(round_float_~exponent_less_127~0, 23bv32); {695#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) (fp ((_ extract 31 31) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 30 23) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 22 0) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0))))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} is VALID [2020-07-28 17:53:22,807 INFO L280 TraceCheckUtils]: 4: Hoare triple {695#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) (fp ((_ extract 31 31) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 30 23) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 22 0) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0))))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} round_float_~exponent_less_127~0 := ~bvsub32(~bvlshr32(~bvand32(2139095040bv32, round_float_~w~0), 23bv32), 127bv32); {695#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) (fp ((_ extract 31 31) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 30 23) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 22 0) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0))))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} is VALID [2020-07-28 17:53:22,808 INFO L280 TraceCheckUtils]: 3: Hoare triple {695#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) (fp ((_ extract 31 31) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 30 23) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 22 0) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0))))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} goto; {695#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) (fp ((_ extract 31 31) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 30 23) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 22 0) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0))))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} is VALID [2020-07-28 17:53:22,813 INFO L280 TraceCheckUtils]: 2: Hoare triple {681#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= ULTIMATE.start_round_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} call round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(round_float_~x, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);call round_float_#t~mem0 := read~intINTTYPE4(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);round_float_~w~0 := round_float_#t~mem0;call write~intFLOATTYPE4(round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, 4bv32);havoc round_float_#t~mem0;havoc round_float_#t~union1;call ULTIMATE.dealloc(round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset);havoc round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset; {695#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5)) (fp ((_ extract 31 31) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 30 23) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0)) ((_ extract 22 0) (bvand (_ bv2147483648 32) ULTIMATE.start_round_float_~w~0))))) (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32))))} is VALID [2020-07-28 17:53:22,815 INFO L280 TraceCheckUtils]: 1: Hoare triple {586#true} havoc main_#res;havoc main_#t~ret6, main_#t~ret7, main_#t~short8, main_~x~0, main_~res~0;main_~x~0 := ~Pluszero~FLOAT();round_float_#in~x := main_~x~0;havoc round_float_#res;havoc round_float_#t~mem0, round_float_#t~union1, round_float_~#gf_u~0.base, round_float_~#gf_u~0.offset, round_float_~exponent_mask~0, round_float_#t~mem2, round_float_#t~union3, round_float_~#sf_u~0.base, round_float_~#sf_u~0.offset, round_float_~x, round_float_~w~0, round_float_~exponent_less_127~0;round_float_~x := round_float_#in~x;havoc round_float_~w~0;havoc round_float_~exponent_less_127~0; {681#(forall ((v_ULTIMATE.start___signbit_float_~w~1_5 (_ BitVec 32))) (or (= (bvand (_ bv2147483648 32) v_ULTIMATE.start___signbit_float_~w~1_5) (_ bv0 32)) (not (= ULTIMATE.start_round_float_~x (fp ((_ extract 31 31) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 30 23) v_ULTIMATE.start___signbit_float_~w~1_5) ((_ extract 22 0) v_ULTIMATE.start___signbit_float_~w~1_5))))))} is VALID [2020-07-28 17:53:22,815 INFO L280 TraceCheckUtils]: 0: Hoare triple {586#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {586#true} is VALID [2020-07-28 17:53:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:53:22,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489752432] [2020-07-28 17:53:22,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:53:22,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 17 [2020-07-28 17:53:22,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391838743] [2020-07-28 17:53:22,819 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 19 [2020-07-28 17:53:22,820 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:53:22,820 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 17 states. [2020-07-28 17:53:22,895 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:22,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-28 17:53:22,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:53:22,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-28 17:53:22,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-07-28 17:53:22,896 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 17 states. [2020-07-28 17:53:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:23,622 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-07-28 17:53:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-28 17:53:23,622 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 19 [2020-07-28 17:53:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:53:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-28 17:53:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2020-07-28 17:53:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-28 17:53:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2020-07-28 17:53:23,625 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 19 transitions. [2020-07-28 17:53:23,669 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:53:23,670 INFO L225 Difference]: With dead ends: 20 [2020-07-28 17:53:23,670 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:53:23,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-07-28 17:53:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:53:23,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:53:23,671 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:53:23,672 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:23,672 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:23,672 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:23,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:23,672 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:53:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:53:23,672 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:23,672 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:23,673 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:23,673 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:53:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:53:23,673 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:53:23,673 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:53:23,673 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:23,673 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:53:23,674 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:53:23,674 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:53:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:53:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:53:23,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-07-28 17:53:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:53:23,674 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:53:23,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-28 17:53:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:53:23,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:53:23,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-07-28 17:53:23,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:53:24,054 INFO L264 CegarLoopResult]: At program point L64(lines 55 65) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_round_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (exists ((ULTIMATE.start_round_float_~w~0 (_ BitVec 32))) (and (= (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_round_float_~exponent_less_127~0) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24)))) |ULTIMATE.start_main_#t~short8| (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= |ULTIMATE.start___signbit_float_#res| (_ bv0 32)) (= ULTIMATE.start_round_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)))) [2020-07-28 17:53:24,054 INFO L264 CegarLoopResult]: At program point L52(lines 12 53) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_round_float_#res|) (exists ((ULTIMATE.start_round_float_~w~0 (_ BitVec 32))) (and (= (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_round_float_~exponent_less_127~0) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24)))) (= ULTIMATE.start_round_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))) [2020-07-28 17:53:24,054 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:53:24,054 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:53:24,054 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:53:24,055 INFO L268 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-07-28 17:53:24,055 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2020-07-28 17:53:24,055 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-07-28 17:53:24,055 INFO L268 CegarLoopResult]: For program point L33(lines 33 35) no Hoare annotation was computed. [2020-07-28 17:53:24,055 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:53:24,055 INFO L268 CegarLoopResult]: For program point L25(lines 25 46) no Hoare annotation was computed. [2020-07-28 17:53:24,055 INFO L268 CegarLoopResult]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2020-07-28 17:53:24,055 INFO L264 CegarLoopResult]: At program point L58-2(lines 58 62) the Hoare annotation is: (and (= (_ +zero 8 24) |ULTIMATE.start_round_float_#res|) (= (_ +zero 8 24) ULTIMATE.start_main_~res~0) (exists ((ULTIMATE.start_round_float_~w~0 (_ BitVec 32))) (and (= (bvadd (bvlshr (bvand (_ bv2139095040 32) ULTIMATE.start_round_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_round_float_~exponent_less_127~0) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24)))) |ULTIMATE.start_main_#t~short8| (= (_ +zero 8 24) ULTIMATE.start___signbit_float_~x) (= ULTIMATE.start_round_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start_round_float_~w~0) ((_ extract 30 23) ULTIMATE.start_round_float_~w~0) ((_ extract 22 0) ULTIMATE.start_round_float_~w~0)) (_ +zero 8 24))) [2020-07-28 17:53:24,056 INFO L268 CegarLoopResult]: For program point L58-3(lines 58 62) no Hoare annotation was computed. [2020-07-28 17:53:24,056 INFO L268 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-07-28 17:53:24,056 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (= ULTIMATE.start_round_float_~x (_ +zero 8 24)) [2020-07-28 17:53:24,056 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-28 17:53:24,056 INFO L268 CegarLoopResult]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2020-07-28 17:53:24,056 INFO L268 CegarLoopResult]: For program point L79-2(lines 79 82) no Hoare annotation was computed. [2020-07-28 17:53:24,056 INFO L268 CegarLoopResult]: For program point L26(lines 26 39) no Hoare annotation was computed. [2020-07-28 17:53:24,056 INFO L271 CegarLoopResult]: At program point L84(lines 67 85) the Hoare annotation is: true [2020-07-28 17:53:24,056 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-07-28 17:53:24,057 INFO L268 CegarLoopResult]: For program point L47(lines 47 51) no Hoare annotation was computed. [2020-07-28 17:53:24,057 INFO L268 CegarLoopResult]: For program point L47-1(lines 12 53) no Hoare annotation was computed. [2020-07-28 17:53:24,057 INFO L268 CegarLoopResult]: For program point L47-2(lines 47 51) no Hoare annotation was computed. [2020-07-28 17:53:24,062 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:53:24,063 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:53:24,063 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:53:24,063 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 17:53:24,063 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:53:24,063 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:53:24,064 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 17:53:24,064 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:53:24,064 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:53:24,064 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-28 17:53:24,064 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-28 17:53:24,064 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-28 17:53:24,065 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-28 17:53:24,065 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-28 17:53:24,065 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-28 17:53:24,065 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-28 17:53:24,065 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2020-07-28 17:53:24,066 WARN L170 areAnnotationChecker]: L79 has no Hoare annotation [2020-07-28 17:53:24,066 WARN L170 areAnnotationChecker]: L47-1 has no Hoare annotation [2020-07-28 17:53:24,066 WARN L170 areAnnotationChecker]: L47-1 has no Hoare annotation [2020-07-28 17:53:24,066 WARN L170 areAnnotationChecker]: L79 has no Hoare annotation [2020-07-28 17:53:24,066 WARN L170 areAnnotationChecker]: L79 has no Hoare annotation [2020-07-28 17:53:24,066 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2020-07-28 17:53:24,067 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2020-07-28 17:53:24,067 WARN L170 areAnnotationChecker]: L47-2 has no Hoare annotation [2020-07-28 17:53:24,067 WARN L170 areAnnotationChecker]: L58-1 has no Hoare annotation [2020-07-28 17:53:24,067 WARN L170 areAnnotationChecker]: L58-3 has no Hoare annotation [2020-07-28 17:53:24,067 WARN L170 areAnnotationChecker]: L79-2 has no Hoare annotation [2020-07-28 17:53:24,067 WARN L170 areAnnotationChecker]: L79-2 has no Hoare annotation [2020-07-28 17:53:24,068 WARN L170 areAnnotationChecker]: L58-1 has no Hoare annotation [2020-07-28 17:53:24,068 WARN L170 areAnnotationChecker]: L58-1 has no Hoare annotation [2020-07-28 17:53:24,068 WARN L170 areAnnotationChecker]: L58-3 has no Hoare annotation [2020-07-28 17:53:24,068 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2020-07-28 17:53:24,068 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2020-07-28 17:53:24,069 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:53:24,069 WARN L170 areAnnotationChecker]: L79-2 has no Hoare annotation [2020-07-28 17:53:24,069 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:53:24,070 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:53:24,078 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,080 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,080 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,080 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,082 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,083 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,083 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,083 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,085 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,085 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,086 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,086 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,087 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,087 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,088 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,088 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,089 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,090 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,090 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,090 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,091 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,091 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,092 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,092 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:53:24 BoogieIcfgContainer [2020-07-28 17:53:24,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:53:24,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:53:24,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:53:24,096 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:53:24,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:53:18" (3/4) ... [2020-07-28 17:53:24,100 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:53:24,112 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-07-28 17:53:24,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-07-28 17:53:24,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:53:24,140 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~Pluszero~LONGDOUBLE() == \result && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127 && ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~Pluszero~LONGDOUBLE())) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() [2020-07-28 17:53:24,142 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127 && ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() [2020-07-28 17:53:24,142 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127 && ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2020-07-28 17:53:24,170 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:53:24,171 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:53:24,174 INFO L168 Benchmark]: Toolchain (without parser) took 6580.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.3 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -118.7 MB). Peak memory consumption was 82.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:24,174 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:53:24,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:24,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:53:24,176 INFO L168 Benchmark]: Boogie Preprocessor took 37.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:53:24,177 INFO L168 Benchmark]: RCFGBuilder took 555.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:24,178 INFO L168 Benchmark]: TraceAbstraction took 5435.09 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 83.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:53:24,178 INFO L168 Benchmark]: Witness Printer took 75.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2020-07-28 17:53:24,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 406.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.2 MB in the beginning and 1.1 GB in the end (delta: -168.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 61.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.42 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 555.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5435.09 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 83.1 MB. Max. memory is 11.5 GB. * Witness Printer took 75.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 55]: Loop Invariant [2020-07-28 17:53:24,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,196 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,197 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,198 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,199 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,199 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] Derived loop invariant: (((((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127 && ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 58]: Loop Invariant [2020-07-28 17:53:24,200 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,201 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,202 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,203 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] Derived loop invariant: (((((~Pluszero~LONGDOUBLE() == \result && ~Pluszero~LONGDOUBLE() == res) && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127 && ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~Pluszero~LONGDOUBLE())) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 12]: Loop Invariant [2020-07-28 17:53:24,204 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,205 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,205 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,205 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,206 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,206 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,206 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] [2020-07-28 17:53:24,207 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_round_float_~w~0,QUANTIFIED] Derived loop invariant: ((~Pluszero~LONGDOUBLE() == \result && (\exists ULTIMATE.start_round_float_~w~0 : bv32 :: ~bvadd64(~bvlshr32(~bvand32(2139095040bv32, ULTIMATE.start_round_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127 && ~fp~LONGDOUBLE(ULTIMATE.start_round_float_~w~0[31:31], ULTIMATE.start_round_float_~w~0[30:23], ULTIMATE.start_round_float_~w~0[22:0]) == ~Pluszero~LONGDOUBLE())) && x == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 183 SDslu, 64 SDs, 0 SdLazy, 90 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 138 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 14 QuantifiedInterpolants, 9364 SizeOfPredicates, 27 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...