./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0740.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_0740.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 1ba5abe06d07a4712bf40ef71e353712c0bd3c97 ................................................................................................................................................................................................................................................................................................................................................................................... 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_0740.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 1ba5abe06d07a4712bf40ef71e353712c0bd3c97 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:49:32,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:49:32,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:49:32,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:49:32,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:49:32,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:49:32,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:49:32,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:49:32,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:49:32,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:49:32,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:49:32,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:49:32,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:49:32,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:49:32,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:49:32,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:49:32,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:49:32,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:49:32,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:49:32,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:49:32,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:49:32,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:49:32,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:49:32,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:49:32,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:49:32,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:49:32,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:49:32,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:49:32,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:49:32,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:49:32,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:49:32,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:49:32,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:49:32,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:49:32,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:49:32,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:49:32,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:49:32,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:49:32,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:49:32,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:49:32,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:49:32,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:49:32,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:49:32,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:49:32,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:49:32,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:49:32,425 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:49:32,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:49:32,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:49:32,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:49:32,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:49:32,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:49:32,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:49:32,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:49:32,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:49:32,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:49:32,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:49:32,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:49:32,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:49:32,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:49:32,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:49:32,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:49:32,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:49:32,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:49:32,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:49:32,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:49:32,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:49:32,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:49:32,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:49:32,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:49:32,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:49:32,439 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 -> 1ba5abe06d07a4712bf40ef71e353712c0bd3c97 [2020-07-28 17:49:32,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:49:32,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:49:32,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:49:32,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:49:32,867 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:49:32,869 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2020-07-28 17:49:32,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07de978c8/1b014909ddad4b969ecdd5e39cf2bce9/FLAG981a58777 [2020-07-28 17:49:33,422 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:49:33,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2020-07-28 17:49:33,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07de978c8/1b014909ddad4b969ecdd5e39cf2bce9/FLAG981a58777 [2020-07-28 17:49:33,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07de978c8/1b014909ddad4b969ecdd5e39cf2bce9 [2020-07-28 17:49:33,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:49:33,772 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:49:33,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:49:33,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:49:33,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:49:33,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:49:33" (1/1) ... [2020-07-28 17:49:33,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287afa32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:33, skipping insertion in model container [2020-07-28 17:49:33,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:49:33" (1/1) ... [2020-07-28 17:49:33,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:49:33,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:49:34,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:49:34,182 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:49:34,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:49:34,360 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:49:34,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34 WrapperNode [2020-07-28 17:49:34,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:49:34,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:49:34,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:49:34,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:49:34,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (1/1) ... [2020-07-28 17:49:34,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (1/1) ... [2020-07-28 17:49:34,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:49:34,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:49:34,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:49:34,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:49:34,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (1/1) ... [2020-07-28 17:49:34,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (1/1) ... [2020-07-28 17:49:34,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (1/1) ... [2020-07-28 17:49:34,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (1/1) ... [2020-07-28 17:49:34,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (1/1) ... [2020-07-28 17:49:34,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (1/1) ... [2020-07-28 17:49:34,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (1/1) ... [2020-07-28 17:49:34,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:49:34,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:49:34,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:49:34,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:49:34,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (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 17:49:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:49:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-28 17:49:34,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:49:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-28 17:49:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:49:34,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:49:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:49:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:49:35,153 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:49:35,153 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:49:35,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:49:35 BoogieIcfgContainer [2020-07-28 17:49:35,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:49:35,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:49:35,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:49:35,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:49:35,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:49:33" (1/3) ... [2020-07-28 17:49:35,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab56483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:49:35, skipping insertion in model container [2020-07-28 17:49:35,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:34" (2/3) ... [2020-07-28 17:49:35,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab56483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:49:35, skipping insertion in model container [2020-07-28 17:49:35,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:49:35" (3/3) ... [2020-07-28 17:49:35,167 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0740.c [2020-07-28 17:49:35,179 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:49:35,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:49:35,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:49:35,223 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:49:35,224 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:49:35,224 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:49:35,224 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:49:35,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:49:35,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:49:35,225 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:49:35,225 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:49:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-28 17:49:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 17:49:35,248 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:49:35,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:49:35,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:49:35,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:49:35,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2020-07-28 17:49:35,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:49:35,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740614803] [2020-07-28 17:49:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:49:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:49:35,417 INFO L280 TraceCheckUtils]: 0: Hoare triple {36#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~one_sqrt~0 := 1.0;~tiny_sqrt~0 := 1.0E-30; {36#true} is VALID [2020-07-28 17:49:35,418 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#true} havoc main_#res;havoc main_#t~ret5, main_#t~ret6, main_~x~0, main_~res~0;main_~x~0 := ~someBinaryArithmeticFLOAToperation(~someUnaryFLOAToperation(1.0), 0.0);__ieee754_sqrtf_#in~x := main_~x~0;havoc __ieee754_sqrtf_#res;havoc __ieee754_sqrtf_#t~mem0, __ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, __ieee754_sqrtf_#t~post2, __ieee754_sqrtf_#t~mem3, __ieee754_sqrtf_#t~union4, __ieee754_sqrtf_~#sf_u~0.base, __ieee754_sqrtf_~#sf_u~0.offset, __ieee754_sqrtf_~x, __ieee754_sqrtf_~z~0, __ieee754_sqrtf_~r~0, __ieee754_sqrtf_~hx~0, __ieee754_sqrtf_~ix~0, __ieee754_sqrtf_~s~0, __ieee754_sqrtf_~q~0, __ieee754_sqrtf_~m~0, __ieee754_sqrtf_~t~0, __ieee754_sqrtf_~i~0;__ieee754_sqrtf_~x := __ieee754_sqrtf_#in~x;havoc __ieee754_sqrtf_~z~0;havoc __ieee754_sqrtf_~r~0;havoc __ieee754_sqrtf_~hx~0;havoc __ieee754_sqrtf_~ix~0;havoc __ieee754_sqrtf_~s~0;havoc __ieee754_sqrtf_~q~0;havoc __ieee754_sqrtf_~m~0;havoc __ieee754_sqrtf_~t~0;havoc __ieee754_sqrtf_~i~0; {36#true} is VALID [2020-07-28 17:49:35,419 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#true} assume !true; {37#false} is VALID [2020-07-28 17:49:35,420 INFO L280 TraceCheckUtils]: 3: Hoare triple {37#false} __ieee754_sqrtf_~hx~0 := ~bitwiseAnd(__ieee754_sqrtf_~ix~0, 2147483647); {37#false} is VALID [2020-07-28 17:49:35,420 INFO L280 TraceCheckUtils]: 4: Hoare triple {37#false} assume !(__ieee754_sqrtf_~hx~0 % 4294967296 < 2139095040);__ieee754_sqrtf_#res := ~someBinaryArithmeticFLOAToperation(~someBinaryArithmeticFLOAToperation(__ieee754_sqrtf_~x, __ieee754_sqrtf_~x), __ieee754_sqrtf_~x); {37#false} is VALID [2020-07-28 17:49:35,421 INFO L280 TraceCheckUtils]: 5: Hoare triple {37#false} main_#t~ret5 := __ieee754_sqrtf_#res;main_~res~0 := main_#t~ret5;havoc main_#t~ret5;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if ~someBinaryFLOATComparisonOperation(isnan_float_~x, isnan_float_~x) then 1 else 0); {37#false} is VALID [2020-07-28 17:49:35,421 INFO L280 TraceCheckUtils]: 6: Hoare triple {37#false} main_#t~ret6 := isnan_float_#res;assume -2147483648 <= main_#t~ret6 && main_#t~ret6 <= 2147483647; {37#false} is VALID [2020-07-28 17:49:35,422 INFO L280 TraceCheckUtils]: 7: Hoare triple {37#false} assume 0 == main_#t~ret6;havoc main_#t~ret6; {37#false} is VALID [2020-07-28 17:49:35,422 INFO L280 TraceCheckUtils]: 8: Hoare triple {37#false} assume !false; {37#false} is VALID [2020-07-28 17:49:35,425 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 17:49:35,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740614803] [2020-07-28 17:49:35,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:49:35,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:49:35,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893670280] [2020-07-28 17:49:35,432 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-07-28 17:49:35,433 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:49:35,437 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:49:35,468 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:49:35,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:49:35,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:49:35,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:49:35,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:49:35,480 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-07-28 17:49:35,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:35,572 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2020-07-28 17:49:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:49:35,572 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-07-28 17:49:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:49:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:49:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2020-07-28 17:49:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:49:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2020-07-28 17:49:35,586 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 98 transitions. [2020-07-28 17:49:35,799 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 98 edges. 98 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:49:35,812 INFO L225 Difference]: With dead ends: 64 [2020-07-28 17:49:35,813 INFO L226 Difference]: Without dead ends: 30 [2020-07-28 17:49:35,817 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 17:49:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-28 17:49:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-28 17:49:35,861 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:49:35,862 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:35,863 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:35,863 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:35,867 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2020-07-28 17:49:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-07-28 17:49:35,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:49:35,869 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:49:35,869 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:35,870 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:35,874 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2020-07-28 17:49:35,874 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-07-28 17:49:35,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:49:35,875 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:49:35,876 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:49:35,876 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:49:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-28 17:49:35,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-07-28 17:49:35,881 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-07-28 17:49:35,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:49:35,882 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-07-28 17:49:35,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:49:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-07-28 17:49:35,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 17:49:35,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:49:35,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:49:35,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:49:35,884 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:49:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:49:35,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2020-07-28 17:49:35,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:49:35,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502353493] [2020-07-28 17:49:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:49:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:49:35,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:49:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:49:36,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:49:36,060 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:49:36,060 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:49:36,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:49:36,090 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:49:36,091 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:49:36,091 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-28 17:49:36,091 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-28 17:49:36,091 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-28 17:49:36,091 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-28 17:49:36,092 WARN L170 areAnnotationChecker]: L22-3 has no Hoare annotation [2020-07-28 17:49:36,092 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-28 17:49:36,092 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-28 17:49:36,092 WARN L170 areAnnotationChecker]: L81 has no Hoare annotation [2020-07-28 17:49:36,092 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-28 17:49:36,092 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-28 17:49:36,093 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 17:49:36,093 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-28 17:49:36,093 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-28 17:49:36,093 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2020-07-28 17:49:36,093 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2020-07-28 17:49:36,093 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:49:36,094 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:49:36,094 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2020-07-28 17:49:36,094 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2020-07-28 17:49:36,094 WARN L170 areAnnotationChecker]: L101 has no Hoare annotation [2020-07-28 17:49:36,094 WARN L170 areAnnotationChecker]: L39-3 has no Hoare annotation [2020-07-28 17:49:36,095 WARN L170 areAnnotationChecker]: L39-3 has no Hoare annotation [2020-07-28 17:49:36,095 WARN L170 areAnnotationChecker]: L39-3 has no Hoare annotation [2020-07-28 17:49:36,095 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-28 17:49:36,095 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:49:36,095 WARN L170 areAnnotationChecker]: L39-4 has no Hoare annotation [2020-07-28 17:49:36,095 WARN L170 areAnnotationChecker]: L39-2 has no Hoare annotation [2020-07-28 17:49:36,096 WARN L170 areAnnotationChecker]: L45 has no Hoare annotation [2020-07-28 17:49:36,096 WARN L170 areAnnotationChecker]: L45 has no Hoare annotation [2020-07-28 17:49:36,096 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 17:49:36,096 WARN L170 areAnnotationChecker]: L53-2 has no Hoare annotation [2020-07-28 17:49:36,096 WARN L170 areAnnotationChecker]: L53-2 has no Hoare annotation [2020-07-28 17:49:36,096 WARN L170 areAnnotationChecker]: L53-2 has no Hoare annotation [2020-07-28 17:49:36,097 WARN L170 areAnnotationChecker]: L53-3 has no Hoare annotation [2020-07-28 17:49:36,097 WARN L170 areAnnotationChecker]: L53-3 has no Hoare annotation [2020-07-28 17:49:36,097 WARN L170 areAnnotationChecker]: L55 has no Hoare annotation [2020-07-28 17:49:36,097 WARN L170 areAnnotationChecker]: L55 has no Hoare annotation [2020-07-28 17:49:36,097 WARN L170 areAnnotationChecker]: L66 has no Hoare annotation [2020-07-28 17:49:36,097 WARN L170 areAnnotationChecker]: L66 has no Hoare annotation [2020-07-28 17:49:36,098 WARN L170 areAnnotationChecker]: L64 has no Hoare annotation [2020-07-28 17:49:36,098 WARN L170 areAnnotationChecker]: L55-2 has no Hoare annotation [2020-07-28 17:49:36,098 WARN L170 areAnnotationChecker]: L68 has no Hoare annotation [2020-07-28 17:49:36,098 WARN L170 areAnnotationChecker]: L68 has no Hoare annotation [2020-07-28 17:49:36,098 WARN L170 areAnnotationChecker]: L76-2 has no Hoare annotation [2020-07-28 17:49:36,098 WARN L170 areAnnotationChecker]: L76-2 has no Hoare annotation [2020-07-28 17:49:36,099 WARN L170 areAnnotationChecker]: L76-1 has no Hoare annotation [2020-07-28 17:49:36,099 WARN L170 areAnnotationChecker]: L76-1 has no Hoare annotation [2020-07-28 17:49:36,099 WARN L170 areAnnotationChecker]: L76-3 has no Hoare annotation [2020-07-28 17:49:36,099 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 17:49:36,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:49:36 BoogieIcfgContainer [2020-07-28 17:49:36,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:49:36,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:49:36,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:49:36,103 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:49:36,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:49:35" (3/4) ... [2020-07-28 17:49:36,107 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:49:36,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:49:36,111 INFO L168 Benchmark]: Toolchain (without parser) took 2340.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 66.6 MB). Free memory was 960.2 MB in the beginning and 954.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 72.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:49:36,112 INFO L168 Benchmark]: CDTParser took 0.87 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 17:49:36,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 66.6 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -94.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:49:36,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:49:36,114 INFO L168 Benchmark]: Boogie Preprocessor took 75.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:49:36,115 INFO L168 Benchmark]: RCFGBuilder took 621.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:49:36,116 INFO L168 Benchmark]: TraceAbstraction took 942.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 954.8 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:49:36,116 INFO L168 Benchmark]: Witness Printer took 5.26 ms. Allocated memory is still 1.1 GB. Free memory is still 954.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:49:36,121 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 0.87 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 588.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 66.6 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -94.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 98.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.22 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 621.08 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 942.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 954.8 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.26 ms. Allocated memory is still 1.1 GB. Free memory is still 954.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 97]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 30, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L91] float x = -1.0f / 0.0f; [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L93] float res = __ieee754_sqrtf(x); [L13] return x != x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L96] COND TRUE !isnan_float(res) [L97] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 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=33occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 17:49:38,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:49:38,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:49:38,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:49:38,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:49:38,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:49:38,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:49:38,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:49:38,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:49:38,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:49:38,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:49:38,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:49:38,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:49:38,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:49:38,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:49:38,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:49:38,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:49:38,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:49:38,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:49:38,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:49:38,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:49:38,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:49:38,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:49:38,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:49:38,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:49:38,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:49:38,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:49:38,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:49:38,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:49:38,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:49:38,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:49:38,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:49:38,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:49:38,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:49:38,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:49:38,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:49:38,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:49:38,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:49:38,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:49:38,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:49:38,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:49:38,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:49:38,220 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:49:38,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:49:38,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:49:38,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:49:38,227 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:49:38,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:49:38,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:49:38,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:49:38,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:49:38,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:49:38,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:49:38,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:49:38,229 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:49:38,231 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:49:38,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:49:38,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:49:38,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:49:38,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:49:38,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:49:38,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:49:38,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:49:38,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:49:38,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:49:38,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:49:38,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:49:38,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:49:38,235 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:49:38,235 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:49:38,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:49:38,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:49:38,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:49:38,236 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 -> 1ba5abe06d07a4712bf40ef71e353712c0bd3c97 [2020-07-28 17:49:38,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:49:38,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:49:38,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:49:38,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:49:38,604 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:49:38,605 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2020-07-28 17:49:38,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a53abd9e/06e52d8715974886b50a0b56fe177d36/FLAG0ab1605f5 [2020-07-28 17:49:39,160 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:49:39,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2020-07-28 17:49:39,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a53abd9e/06e52d8715974886b50a0b56fe177d36/FLAG0ab1605f5 [2020-07-28 17:49:39,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a53abd9e/06e52d8715974886b50a0b56fe177d36 [2020-07-28 17:49:39,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:49:39,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:49:39,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:49:39,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:49:39,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:49:39,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:39,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7579dd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39, skipping insertion in model container [2020-07-28 17:49:39,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:39,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:49:39,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:49:39,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:49:39,767 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:49:39,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:49:39,911 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:49:39,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39 WrapperNode [2020-07-28 17:49:39,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:49:39,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:49:39,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:49:39,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:49:39,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:39,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:39,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:49:39,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:49:39,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:49:39,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:49:39,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:39,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:39,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:39,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:39,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:40,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:40,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (1/1) ... [2020-07-28 17:49:40,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:49:40,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:49:40,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:49:40,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:49:40,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (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 17:49:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:49:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-07-28 17:49:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-07-28 17:49:40,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:49:40,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:49:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-07-28 17:49:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-07-28 17:49:40,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:49:41,111 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:49:41,111 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:49:41,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:49:41 BoogieIcfgContainer [2020-07-28 17:49:41,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:49:41,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:49:41,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:49:41,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:49:41,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:49:39" (1/3) ... [2020-07-28 17:49:41,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b12aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:49:41, skipping insertion in model container [2020-07-28 17:49:41,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:49:39" (2/3) ... [2020-07-28 17:49:41,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b12aac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:49:41, skipping insertion in model container [2020-07-28 17:49:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:49:41" (3/3) ... [2020-07-28 17:49:41,125 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0740.c [2020-07-28 17:49:41,137 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:49:41,146 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:49:41,163 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:49:41,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:49:41,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:49:41,193 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:49:41,193 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:49:41,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:49:41,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:49:41,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:49:41,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:49:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-07-28 17:49:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 17:49:41,214 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:49:41,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:49:41,215 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:49:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:49:41,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2020-07-28 17:49:41,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:49:41,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796807070] [2020-07-28 17:49:41,233 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 17:49:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:49:41,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:49:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:49:41,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:49:41,485 INFO L280 TraceCheckUtils]: 0: Hoare triple {36#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0));~tiny_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E-30)); {36#true} is VALID [2020-07-28 17:49:41,487 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#true} havoc main_#res;havoc main_#t~ret5, main_#t~ret6, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0)), ~Pluszero~FLOAT());__ieee754_sqrtf_#in~x := main_~x~0;havoc __ieee754_sqrtf_#res;havoc __ieee754_sqrtf_#t~mem0, __ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, __ieee754_sqrtf_#t~post2, __ieee754_sqrtf_#t~mem3, __ieee754_sqrtf_#t~union4, __ieee754_sqrtf_~#sf_u~0.base, __ieee754_sqrtf_~#sf_u~0.offset, __ieee754_sqrtf_~x, __ieee754_sqrtf_~z~0, __ieee754_sqrtf_~r~0, __ieee754_sqrtf_~hx~0, __ieee754_sqrtf_~ix~0, __ieee754_sqrtf_~s~0, __ieee754_sqrtf_~q~0, __ieee754_sqrtf_~m~0, __ieee754_sqrtf_~t~0, __ieee754_sqrtf_~i~0;__ieee754_sqrtf_~x := __ieee754_sqrtf_#in~x;havoc __ieee754_sqrtf_~z~0;havoc __ieee754_sqrtf_~r~0;havoc __ieee754_sqrtf_~hx~0;havoc __ieee754_sqrtf_~ix~0;havoc __ieee754_sqrtf_~s~0;havoc __ieee754_sqrtf_~q~0;havoc __ieee754_sqrtf_~m~0;havoc __ieee754_sqrtf_~t~0;havoc __ieee754_sqrtf_~i~0; {36#true} is VALID [2020-07-28 17:49:41,489 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#true} assume !true; {37#false} is VALID [2020-07-28 17:49:41,489 INFO L280 TraceCheckUtils]: 3: Hoare triple {37#false} __ieee754_sqrtf_~hx~0 := ~bvand32(2147483647bv32, __ieee754_sqrtf_~ix~0); {37#false} is VALID [2020-07-28 17:49:41,490 INFO L280 TraceCheckUtils]: 4: Hoare triple {37#false} assume !~bvult32(__ieee754_sqrtf_~hx~0, 2139095040bv32);__ieee754_sqrtf_#res := ~fp.add~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, __ieee754_sqrtf_~x, __ieee754_sqrtf_~x), __ieee754_sqrtf_~x); {37#false} is VALID [2020-07-28 17:49:41,490 INFO L280 TraceCheckUtils]: 5: Hoare triple {37#false} main_#t~ret5 := __ieee754_sqrtf_#res;main_~res~0 := main_#t~ret5;havoc main_#t~ret5;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {37#false} is VALID [2020-07-28 17:49:41,490 INFO L280 TraceCheckUtils]: 6: Hoare triple {37#false} main_#t~ret6 := isnan_float_#res; {37#false} is VALID [2020-07-28 17:49:41,491 INFO L280 TraceCheckUtils]: 7: Hoare triple {37#false} assume 0bv32 == main_#t~ret6;havoc main_#t~ret6; {37#false} is VALID [2020-07-28 17:49:41,491 INFO L280 TraceCheckUtils]: 8: Hoare triple {37#false} assume !false; {37#false} is VALID [2020-07-28 17:49:41,495 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 17:49:41,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:49:41,512 INFO L280 TraceCheckUtils]: 8: Hoare triple {37#false} assume !false; {37#false} is VALID [2020-07-28 17:49:41,512 INFO L280 TraceCheckUtils]: 7: Hoare triple {37#false} assume 0bv32 == main_#t~ret6;havoc main_#t~ret6; {37#false} is VALID [2020-07-28 17:49:41,513 INFO L280 TraceCheckUtils]: 6: Hoare triple {37#false} main_#t~ret6 := isnan_float_#res; {37#false} is VALID [2020-07-28 17:49:41,513 INFO L280 TraceCheckUtils]: 5: Hoare triple {37#false} main_#t~ret5 := __ieee754_sqrtf_#res;main_~res~0 := main_#t~ret5;havoc main_#t~ret5;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {37#false} is VALID [2020-07-28 17:49:41,513 INFO L280 TraceCheckUtils]: 4: Hoare triple {37#false} assume !~bvult32(__ieee754_sqrtf_~hx~0, 2139095040bv32);__ieee754_sqrtf_#res := ~fp.add~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, __ieee754_sqrtf_~x, __ieee754_sqrtf_~x), __ieee754_sqrtf_~x); {37#false} is VALID [2020-07-28 17:49:41,514 INFO L280 TraceCheckUtils]: 3: Hoare triple {37#false} __ieee754_sqrtf_~hx~0 := ~bvand32(2147483647bv32, __ieee754_sqrtf_~ix~0); {37#false} is VALID [2020-07-28 17:49:41,516 INFO L280 TraceCheckUtils]: 2: Hoare triple {36#true} assume !true; {37#false} is VALID [2020-07-28 17:49:41,516 INFO L280 TraceCheckUtils]: 1: Hoare triple {36#true} havoc main_#res;havoc main_#t~ret5, main_#t~ret6, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0)), ~Pluszero~FLOAT());__ieee754_sqrtf_#in~x := main_~x~0;havoc __ieee754_sqrtf_#res;havoc __ieee754_sqrtf_#t~mem0, __ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, __ieee754_sqrtf_#t~post2, __ieee754_sqrtf_#t~mem3, __ieee754_sqrtf_#t~union4, __ieee754_sqrtf_~#sf_u~0.base, __ieee754_sqrtf_~#sf_u~0.offset, __ieee754_sqrtf_~x, __ieee754_sqrtf_~z~0, __ieee754_sqrtf_~r~0, __ieee754_sqrtf_~hx~0, __ieee754_sqrtf_~ix~0, __ieee754_sqrtf_~s~0, __ieee754_sqrtf_~q~0, __ieee754_sqrtf_~m~0, __ieee754_sqrtf_~t~0, __ieee754_sqrtf_~i~0;__ieee754_sqrtf_~x := __ieee754_sqrtf_#in~x;havoc __ieee754_sqrtf_~z~0;havoc __ieee754_sqrtf_~r~0;havoc __ieee754_sqrtf_~hx~0;havoc __ieee754_sqrtf_~ix~0;havoc __ieee754_sqrtf_~s~0;havoc __ieee754_sqrtf_~q~0;havoc __ieee754_sqrtf_~m~0;havoc __ieee754_sqrtf_~t~0;havoc __ieee754_sqrtf_~i~0; {36#true} is VALID [2020-07-28 17:49:41,517 INFO L280 TraceCheckUtils]: 0: Hoare triple {36#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0));~tiny_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E-30)); {36#true} is VALID [2020-07-28 17:49:41,517 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 17:49:41,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796807070] [2020-07-28 17:49:41,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:49:41,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:49:41,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154039063] [2020-07-28 17:49:41,532 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-07-28 17:49:41,533 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:49:41,538 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:49:41,632 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 9 edges. 9 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:49:41,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:49:41,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:49:41,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:49:41,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:49:41,644 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-07-28 17:49:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:42,175 INFO L93 Difference]: Finished difference Result 64 states and 98 transitions. [2020-07-28 17:49:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:49:42,175 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-07-28 17:49:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:49:42,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:49:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2020-07-28 17:49:42,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:49:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2020-07-28 17:49:42,189 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 98 transitions. [2020-07-28 17:49:42,828 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 98 edges. 98 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:49:42,852 INFO L225 Difference]: With dead ends: 64 [2020-07-28 17:49:42,854 INFO L226 Difference]: Without dead ends: 30 [2020-07-28 17:49:42,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 17:49:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-28 17:49:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-28 17:49:42,936 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:49:42,937 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:42,938 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:42,939 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:42,953 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2020-07-28 17:49:42,953 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-07-28 17:49:42,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:49:42,956 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:49:42,957 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:42,957 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:42,963 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2020-07-28 17:49:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-07-28 17:49:42,965 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:49:42,965 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:49:42,966 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:49:42,967 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:49:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-28 17:49:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-07-28 17:49:42,977 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-07-28 17:49:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:49:42,978 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-07-28 17:49:42,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:49:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-07-28 17:49:42,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-28 17:49:42,983 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:49:42,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:49:43,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:49:43,198 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:49:43,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:49:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2020-07-28 17:49:43,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:49:43,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771949540] [2020-07-28 17:49:43,201 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 17:49:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:49:43,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-28 17:49:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:49:43,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:49:43,544 INFO L280 TraceCheckUtils]: 0: Hoare triple {262#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0));~tiny_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E-30)); {267#(= currentRoundingMode roundNearestTiesToEven)} is VALID [2020-07-28 17:49:43,547 INFO L280 TraceCheckUtils]: 1: Hoare triple {267#(= currentRoundingMode roundNearestTiesToEven)} havoc main_#res;havoc main_#t~ret5, main_#t~ret6, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0)), ~Pluszero~FLOAT());__ieee754_sqrtf_#in~x := main_~x~0;havoc __ieee754_sqrtf_#res;havoc __ieee754_sqrtf_#t~mem0, __ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, __ieee754_sqrtf_#t~post2, __ieee754_sqrtf_#t~mem3, __ieee754_sqrtf_#t~union4, __ieee754_sqrtf_~#sf_u~0.base, __ieee754_sqrtf_~#sf_u~0.offset, __ieee754_sqrtf_~x, __ieee754_sqrtf_~z~0, __ieee754_sqrtf_~r~0, __ieee754_sqrtf_~hx~0, __ieee754_sqrtf_~ix~0, __ieee754_sqrtf_~s~0, __ieee754_sqrtf_~q~0, __ieee754_sqrtf_~m~0, __ieee754_sqrtf_~t~0, __ieee754_sqrtf_~i~0;__ieee754_sqrtf_~x := __ieee754_sqrtf_#in~x;havoc __ieee754_sqrtf_~z~0;havoc __ieee754_sqrtf_~r~0;havoc __ieee754_sqrtf_~hx~0;havoc __ieee754_sqrtf_~ix~0;havoc __ieee754_sqrtf_~s~0;havoc __ieee754_sqrtf_~q~0;havoc __ieee754_sqrtf_~m~0;havoc __ieee754_sqrtf_~t~0;havoc __ieee754_sqrtf_~i~0; {271#(and (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven))} is VALID [2020-07-28 17:49:43,550 INFO L280 TraceCheckUtils]: 2: Hoare triple {271#(and (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven))} call __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(__ieee754_sqrtf_~x, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);call __ieee754_sqrtf_#t~mem0 := read~intINTTYPE4(__ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);__ieee754_sqrtf_~ix~0 := __ieee754_sqrtf_#t~mem0;call write~intFLOATTYPE4(__ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);havoc __ieee754_sqrtf_#t~union1;havoc __ieee754_sqrtf_#t~mem0;call ULTIMATE.dealloc(__ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset);havoc __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset; {271#(and (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven))} is VALID [2020-07-28 17:49:43,552 INFO L280 TraceCheckUtils]: 3: Hoare triple {271#(and (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven))} goto; {271#(and (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven))} is VALID [2020-07-28 17:49:43,557 INFO L280 TraceCheckUtils]: 4: Hoare triple {271#(and (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven))} __ieee754_sqrtf_~hx~0 := ~bvand32(2147483647bv32, __ieee754_sqrtf_~ix~0); {271#(and (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven))} is VALID [2020-07-28 17:49:43,559 INFO L280 TraceCheckUtils]: 5: Hoare triple {271#(and (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= currentRoundingMode roundNearestTiesToEven))} assume !~bvult32(__ieee754_sqrtf_~hx~0, 2139095040bv32);__ieee754_sqrtf_#res := ~fp.add~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, __ieee754_sqrtf_~x, __ieee754_sqrtf_~x), __ieee754_sqrtf_~x); {284#(= |ULTIMATE.start___ieee754_sqrtf_#res| (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:49:43,561 INFO L280 TraceCheckUtils]: 6: Hoare triple {284#(= |ULTIMATE.start___ieee754_sqrtf_#res| (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} main_#t~ret5 := __ieee754_sqrtf_#res;main_~res~0 := main_#t~ret5;havoc main_#t~ret5;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {288#(= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)} is VALID [2020-07-28 17:49:43,562 INFO L280 TraceCheckUtils]: 7: Hoare triple {288#(= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)} main_#t~ret6 := isnan_float_#res; {292#(= (bvadd |ULTIMATE.start_main_#t~ret6| (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 17:49:43,564 INFO L280 TraceCheckUtils]: 8: Hoare triple {292#(= (bvadd |ULTIMATE.start_main_#t~ret6| (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == main_#t~ret6;havoc main_#t~ret6; {263#false} is VALID [2020-07-28 17:49:43,564 INFO L280 TraceCheckUtils]: 9: Hoare triple {263#false} assume !false; {263#false} is VALID [2020-07-28 17:49:43,568 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 17:49:43,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:49:47,033 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-28 17:49:47,927 INFO L280 TraceCheckUtils]: 9: Hoare triple {263#false} assume !false; {263#false} is VALID [2020-07-28 17:49:47,928 INFO L280 TraceCheckUtils]: 8: Hoare triple {302#(not (= |ULTIMATE.start_main_#t~ret6| (_ bv0 32)))} assume 0bv32 == main_#t~ret6;havoc main_#t~ret6; {263#false} is VALID [2020-07-28 17:49:47,929 INFO L280 TraceCheckUtils]: 7: Hoare triple {306#(not (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|))} main_#t~ret6 := isnan_float_#res; {302#(not (= |ULTIMATE.start_main_#t~ret6| (_ bv0 32)))} is VALID [2020-07-28 17:49:47,930 INFO L280 TraceCheckUtils]: 6: Hoare triple {284#(= |ULTIMATE.start___ieee754_sqrtf_#res| (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} main_#t~ret5 := __ieee754_sqrtf_#res;main_~res~0 := main_#t~ret5;havoc main_#t~ret5;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {306#(not (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|))} is VALID [2020-07-28 17:49:47,937 INFO L280 TraceCheckUtils]: 5: Hoare triple {313#(= (fp.add currentRoundingMode (fp.mul currentRoundingMode ULTIMATE.start___ieee754_sqrtf_~x ULTIMATE.start___ieee754_sqrtf_~x) ULTIMATE.start___ieee754_sqrtf_~x) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} assume !~bvult32(__ieee754_sqrtf_~hx~0, 2139095040bv32);__ieee754_sqrtf_#res := ~fp.add~FLOAT(currentRoundingMode, ~fp.mul~FLOAT(currentRoundingMode, __ieee754_sqrtf_~x, __ieee754_sqrtf_~x), __ieee754_sqrtf_~x); {284#(= |ULTIMATE.start___ieee754_sqrtf_#res| (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:49:47,938 INFO L280 TraceCheckUtils]: 4: Hoare triple {313#(= (fp.add currentRoundingMode (fp.mul currentRoundingMode ULTIMATE.start___ieee754_sqrtf_~x ULTIMATE.start___ieee754_sqrtf_~x) ULTIMATE.start___ieee754_sqrtf_~x) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} __ieee754_sqrtf_~hx~0 := ~bvand32(2147483647bv32, __ieee754_sqrtf_~ix~0); {313#(= (fp.add currentRoundingMode (fp.mul currentRoundingMode ULTIMATE.start___ieee754_sqrtf_~x ULTIMATE.start___ieee754_sqrtf_~x) ULTIMATE.start___ieee754_sqrtf_~x) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:49:47,940 INFO L280 TraceCheckUtils]: 3: Hoare triple {313#(= (fp.add currentRoundingMode (fp.mul currentRoundingMode ULTIMATE.start___ieee754_sqrtf_~x ULTIMATE.start___ieee754_sqrtf_~x) ULTIMATE.start___ieee754_sqrtf_~x) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} goto; {313#(= (fp.add currentRoundingMode (fp.mul currentRoundingMode ULTIMATE.start___ieee754_sqrtf_~x ULTIMATE.start___ieee754_sqrtf_~x) ULTIMATE.start___ieee754_sqrtf_~x) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:49:47,941 INFO L280 TraceCheckUtils]: 2: Hoare triple {313#(= (fp.add currentRoundingMode (fp.mul currentRoundingMode ULTIMATE.start___ieee754_sqrtf_~x ULTIMATE.start___ieee754_sqrtf_~x) ULTIMATE.start___ieee754_sqrtf_~x) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} call __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(__ieee754_sqrtf_~x, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);call __ieee754_sqrtf_#t~mem0 := read~intINTTYPE4(__ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);__ieee754_sqrtf_~ix~0 := __ieee754_sqrtf_#t~mem0;call write~intFLOATTYPE4(__ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);havoc __ieee754_sqrtf_#t~union1;havoc __ieee754_sqrtf_#t~mem0;call ULTIMATE.dealloc(__ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset);havoc __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset; {313#(= (fp.add currentRoundingMode (fp.mul currentRoundingMode ULTIMATE.start___ieee754_sqrtf_~x ULTIMATE.start___ieee754_sqrtf_~x) ULTIMATE.start___ieee754_sqrtf_~x) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:49:47,996 INFO L280 TraceCheckUtils]: 1: Hoare triple {262#true} havoc main_#res;havoc main_#t~ret5, main_#t~ret6, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0)), ~Pluszero~FLOAT());__ieee754_sqrtf_#in~x := main_~x~0;havoc __ieee754_sqrtf_#res;havoc __ieee754_sqrtf_#t~mem0, __ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, __ieee754_sqrtf_#t~post2, __ieee754_sqrtf_#t~mem3, __ieee754_sqrtf_#t~union4, __ieee754_sqrtf_~#sf_u~0.base, __ieee754_sqrtf_~#sf_u~0.offset, __ieee754_sqrtf_~x, __ieee754_sqrtf_~z~0, __ieee754_sqrtf_~r~0, __ieee754_sqrtf_~hx~0, __ieee754_sqrtf_~ix~0, __ieee754_sqrtf_~s~0, __ieee754_sqrtf_~q~0, __ieee754_sqrtf_~m~0, __ieee754_sqrtf_~t~0, __ieee754_sqrtf_~i~0;__ieee754_sqrtf_~x := __ieee754_sqrtf_#in~x;havoc __ieee754_sqrtf_~z~0;havoc __ieee754_sqrtf_~r~0;havoc __ieee754_sqrtf_~hx~0;havoc __ieee754_sqrtf_~ix~0;havoc __ieee754_sqrtf_~s~0;havoc __ieee754_sqrtf_~q~0;havoc __ieee754_sqrtf_~m~0;havoc __ieee754_sqrtf_~t~0;havoc __ieee754_sqrtf_~i~0; {313#(= (fp.add currentRoundingMode (fp.mul currentRoundingMode ULTIMATE.start___ieee754_sqrtf_~x ULTIMATE.start___ieee754_sqrtf_~x) ULTIMATE.start___ieee754_sqrtf_~x) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:49:47,997 INFO L280 TraceCheckUtils]: 0: Hoare triple {262#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0));~tiny_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E-30)); {262#true} is VALID [2020-07-28 17:49:47,998 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 17:49:47,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771949540] [2020-07-28 17:49:47,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:49:47,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-07-28 17:49:47,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067549348] [2020-07-28 17:49:48,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-07-28 17:49:48,001 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:49:48,002 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states. [2020-07-28 17:49:48,275 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 17:49:48,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-28 17:49:48,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:49:48,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-28 17:49:48,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-28 17:49:48,278 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 10 states. [2020-07-28 17:49:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:52,825 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2020-07-28 17:49:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-28 17:49:52,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-07-28 17:49:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:49:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-28 17:49:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 44 transitions. [2020-07-28 17:49:52,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-07-28 17:49:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 44 transitions. [2020-07-28 17:49:52,831 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 44 transitions. [2020-07-28 17:49:53,148 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:49:53,151 INFO L225 Difference]: With dead ends: 35 [2020-07-28 17:49:53,151 INFO L226 Difference]: Without dead ends: 30 [2020-07-28 17:49:53,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-07-28 17:49:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-28 17:49:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-28 17:49:53,164 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:49:53,164 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:53,165 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:53,165 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:53,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:53,167 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2020-07-28 17:49:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2020-07-28 17:49:53,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:49:53,168 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:49:53,168 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:53,168 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-28 17:49:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:53,171 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2020-07-28 17:49:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2020-07-28 17:49:53,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:49:53,172 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:49:53,172 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:49:53,172 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:49:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-28 17:49:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2020-07-28 17:49:53,175 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 10 [2020-07-28 17:49:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:49:53,175 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2020-07-28 17:49:53,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-28 17:49:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2020-07-28 17:49:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 17:49:53,176 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:49:53,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:49:53,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:49:53,385 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:49:53,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:49:53,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1245605874, now seen corresponding path program 1 times [2020-07-28 17:49:53,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:49:53,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204929234] [2020-07-28 17:49:53,388 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 17:49:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:49:53,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-28 17:49:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:49:53,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:49:53,646 INFO L280 TraceCheckUtils]: 0: Hoare triple {473#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0));~tiny_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E-30)); {473#true} is VALID [2020-07-28 17:49:53,650 INFO L280 TraceCheckUtils]: 1: Hoare triple {473#true} havoc main_#res;havoc main_#t~ret5, main_#t~ret6, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0)), ~Pluszero~FLOAT());__ieee754_sqrtf_#in~x := main_~x~0;havoc __ieee754_sqrtf_#res;havoc __ieee754_sqrtf_#t~mem0, __ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, __ieee754_sqrtf_#t~post2, __ieee754_sqrtf_#t~mem3, __ieee754_sqrtf_#t~union4, __ieee754_sqrtf_~#sf_u~0.base, __ieee754_sqrtf_~#sf_u~0.offset, __ieee754_sqrtf_~x, __ieee754_sqrtf_~z~0, __ieee754_sqrtf_~r~0, __ieee754_sqrtf_~hx~0, __ieee754_sqrtf_~ix~0, __ieee754_sqrtf_~s~0, __ieee754_sqrtf_~q~0, __ieee754_sqrtf_~m~0, __ieee754_sqrtf_~t~0, __ieee754_sqrtf_~i~0;__ieee754_sqrtf_~x := __ieee754_sqrtf_#in~x;havoc __ieee754_sqrtf_~z~0;havoc __ieee754_sqrtf_~r~0;havoc __ieee754_sqrtf_~hx~0;havoc __ieee754_sqrtf_~ix~0;havoc __ieee754_sqrtf_~s~0;havoc __ieee754_sqrtf_~q~0;havoc __ieee754_sqrtf_~m~0;havoc __ieee754_sqrtf_~t~0;havoc __ieee754_sqrtf_~i~0; {481#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:49:53,660 INFO L280 TraceCheckUtils]: 2: Hoare triple {481#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))))} call __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(__ieee754_sqrtf_~x, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);call __ieee754_sqrtf_#t~mem0 := read~intINTTYPE4(__ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);__ieee754_sqrtf_~ix~0 := __ieee754_sqrtf_#t~mem0;call write~intFLOATTYPE4(__ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);havoc __ieee754_sqrtf_#t~union1;havoc __ieee754_sqrtf_#t~mem0;call ULTIMATE.dealloc(__ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset);havoc __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset; {485#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:49:53,661 INFO L280 TraceCheckUtils]: 3: Hoare triple {485#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))))} goto; {485#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))))} is VALID [2020-07-28 17:49:53,665 INFO L280 TraceCheckUtils]: 4: Hoare triple {485#(exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))))} __ieee754_sqrtf_~hx~0 := ~bvand32(2147483647bv32, __ieee754_sqrtf_~ix~0); {492#(exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0) ULTIMATE.start___ieee754_sqrtf_~hx~0)))} is VALID [2020-07-28 17:49:53,668 INFO L280 TraceCheckUtils]: 5: Hoare triple {492#(exists ((ULTIMATE.start___ieee754_sqrtf_~ix~0 (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= (fp ((_ extract 31 31) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 30 23) ULTIMATE.start___ieee754_sqrtf_~ix~0) ((_ extract 22 0) ULTIMATE.start___ieee754_sqrtf_~ix~0)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0) ULTIMATE.start___ieee754_sqrtf_~hx~0)))} assume !!~bvult32(__ieee754_sqrtf_~hx~0, 2139095040bv32); {474#false} is VALID [2020-07-28 17:49:53,669 INFO L280 TraceCheckUtils]: 6: Hoare triple {474#false} assume 0bv32 == __ieee754_sqrtf_~hx~0;__ieee754_sqrtf_#res := __ieee754_sqrtf_~x; {474#false} is VALID [2020-07-28 17:49:53,669 INFO L280 TraceCheckUtils]: 7: Hoare triple {474#false} main_#t~ret5 := __ieee754_sqrtf_#res;main_~res~0 := main_#t~ret5;havoc main_#t~ret5;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {474#false} is VALID [2020-07-28 17:49:53,670 INFO L280 TraceCheckUtils]: 8: Hoare triple {474#false} main_#t~ret6 := isnan_float_#res; {474#false} is VALID [2020-07-28 17:49:53,670 INFO L280 TraceCheckUtils]: 9: Hoare triple {474#false} assume 0bv32 == main_#t~ret6;havoc main_#t~ret6; {474#false} is VALID [2020-07-28 17:49:53,670 INFO L280 TraceCheckUtils]: 10: Hoare triple {474#false} assume !false; {474#false} is VALID [2020-07-28 17:49:53,672 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 17:49:53,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:49:53,811 INFO L280 TraceCheckUtils]: 10: Hoare triple {474#false} assume !false; {474#false} is VALID [2020-07-28 17:49:53,812 INFO L280 TraceCheckUtils]: 9: Hoare triple {474#false} assume 0bv32 == main_#t~ret6;havoc main_#t~ret6; {474#false} is VALID [2020-07-28 17:49:53,812 INFO L280 TraceCheckUtils]: 8: Hoare triple {474#false} main_#t~ret6 := isnan_float_#res; {474#false} is VALID [2020-07-28 17:49:53,812 INFO L280 TraceCheckUtils]: 7: Hoare triple {474#false} main_#t~ret5 := __ieee754_sqrtf_#res;main_~res~0 := main_#t~ret5;havoc main_#t~ret5;isnan_float_#in~x := main_~res~0;havoc isnan_float_#res;havoc isnan_float_~x;isnan_float_~x := isnan_float_#in~x;isnan_float_#res := (if !~fp.eq~FLOAT(isnan_float_~x, isnan_float_~x) then 1bv32 else 0bv32); {474#false} is VALID [2020-07-28 17:49:53,812 INFO L280 TraceCheckUtils]: 6: Hoare triple {474#false} assume 0bv32 == __ieee754_sqrtf_~hx~0;__ieee754_sqrtf_#res := __ieee754_sqrtf_~x; {474#false} is VALID [2020-07-28 17:49:53,817 INFO L280 TraceCheckUtils]: 5: Hoare triple {526#(not (bvult ULTIMATE.start___ieee754_sqrtf_~hx~0 (_ bv2139095040 32)))} assume !!~bvult32(__ieee754_sqrtf_~hx~0, 2139095040bv32); {474#false} is VALID [2020-07-28 17:49:53,818 INFO L280 TraceCheckUtils]: 4: Hoare triple {530#(not (bvult (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0) (_ bv2139095040 32)))} __ieee754_sqrtf_~hx~0 := ~bvand32(2147483647bv32, __ieee754_sqrtf_~ix~0); {526#(not (bvult ULTIMATE.start___ieee754_sqrtf_~hx~0 (_ bv2139095040 32)))} is VALID [2020-07-28 17:49:53,819 INFO L280 TraceCheckUtils]: 3: Hoare triple {530#(not (bvult (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0) (_ bv2139095040 32)))} goto; {530#(not (bvult (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0) (_ bv2139095040 32)))} is VALID [2020-07-28 17:49:53,821 INFO L280 TraceCheckUtils]: 2: Hoare triple {537#(forall ((v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28 (_ BitVec 32))) (or (not (= ULTIMATE.start___ieee754_sqrtf_~x (fp ((_ extract 31 31) v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28) ((_ extract 30 23) v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28) ((_ extract 22 0) v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28)))) (not (bvult (bvand (_ bv2147483647 32) v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28) (_ bv2139095040 32)))))} call __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset := #Ultimate.allocOnStack(4bv32);call write~intFLOATTYPE4(__ieee754_sqrtf_~x, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);call __ieee754_sqrtf_#t~mem0 := read~intINTTYPE4(__ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);__ieee754_sqrtf_~ix~0 := __ieee754_sqrtf_#t~mem0;call write~intFLOATTYPE4(__ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, 4bv32);havoc __ieee754_sqrtf_#t~union1;havoc __ieee754_sqrtf_#t~mem0;call ULTIMATE.dealloc(__ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset);havoc __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset; {530#(not (bvult (bvand (_ bv2147483647 32) ULTIMATE.start___ieee754_sqrtf_~ix~0) (_ bv2139095040 32)))} is VALID [2020-07-28 17:49:53,826 INFO L280 TraceCheckUtils]: 1: Hoare triple {473#true} havoc main_#res;havoc main_#t~ret5, main_#t~ret6, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0)), ~Pluszero~FLOAT());__ieee754_sqrtf_#in~x := main_~x~0;havoc __ieee754_sqrtf_#res;havoc __ieee754_sqrtf_#t~mem0, __ieee754_sqrtf_#t~union1, __ieee754_sqrtf_~#gf_u~0.base, __ieee754_sqrtf_~#gf_u~0.offset, __ieee754_sqrtf_#t~post2, __ieee754_sqrtf_#t~mem3, __ieee754_sqrtf_#t~union4, __ieee754_sqrtf_~#sf_u~0.base, __ieee754_sqrtf_~#sf_u~0.offset, __ieee754_sqrtf_~x, __ieee754_sqrtf_~z~0, __ieee754_sqrtf_~r~0, __ieee754_sqrtf_~hx~0, __ieee754_sqrtf_~ix~0, __ieee754_sqrtf_~s~0, __ieee754_sqrtf_~q~0, __ieee754_sqrtf_~m~0, __ieee754_sqrtf_~t~0, __ieee754_sqrtf_~i~0;__ieee754_sqrtf_~x := __ieee754_sqrtf_#in~x;havoc __ieee754_sqrtf_~z~0;havoc __ieee754_sqrtf_~r~0;havoc __ieee754_sqrtf_~hx~0;havoc __ieee754_sqrtf_~ix~0;havoc __ieee754_sqrtf_~s~0;havoc __ieee754_sqrtf_~q~0;havoc __ieee754_sqrtf_~m~0;havoc __ieee754_sqrtf_~t~0;havoc __ieee754_sqrtf_~i~0; {537#(forall ((v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28 (_ BitVec 32))) (or (not (= ULTIMATE.start___ieee754_sqrtf_~x (fp ((_ extract 31 31) v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28) ((_ extract 30 23) v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28) ((_ extract 22 0) v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28)))) (not (bvult (bvand (_ bv2147483647 32) v_ULTIMATE.start___ieee754_sqrtf_~ix~0_28) (_ bv2139095040 32)))))} is VALID [2020-07-28 17:49:53,826 INFO L280 TraceCheckUtils]: 0: Hoare triple {473#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;~one_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0));~tiny_sqrt~0 := ~convertDOUBLEToFLOAT(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0E-30)); {473#true} is VALID [2020-07-28 17:49:53,827 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 17:49:53,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204929234] [2020-07-28 17:49:53,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:49:53,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-07-28 17:49:53,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841527700] [2020-07-28 17:49:53,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-07-28 17:49:53,828 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:49:53,828 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-28 17:49:53,868 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 17:49:53,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-28 17:49:53,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:49:53,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-28 17:49:53,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-28 17:49:53,869 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 8 states. [2020-07-28 17:49:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:54,076 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2020-07-28 17:49:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-28 17:49:54,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-07-28 17:49:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:49:54,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:49:54,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2020-07-28 17:49:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:49:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2020-07-28 17:49:54,080 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 38 transitions. [2020-07-28 17:49:54,209 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:49:54,209 INFO L225 Difference]: With dead ends: 30 [2020-07-28 17:49:54,210 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 17:49:54,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-07-28 17:49:54,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 17:49:54,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 17:49:54,212 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:49:54,213 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 17:49:54,213 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:49:54,213 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:49:54,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:54,214 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:49:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:49:54,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:49:54,215 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:49:54,215 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 17:49:54,215 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 17:49:54,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:49:54,216 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 17:49:54,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:49:54,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:49:54,216 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:49:54,217 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:49:54,217 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:49:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 17:49:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 17:49:54,218 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-07-28 17:49:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:49:54,218 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 17:49:54,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-28 17:49:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 17:49:54,219 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:49:54,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-07-28 17:49:54,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 17:49:54,606 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 17:49:54,606 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 17:49:54,607 INFO L264 CegarLoopResult]: At program point L53-2(lines 53 62) the Hoare annotation is: false [2020-07-28 17:49:54,607 INFO L268 CegarLoopResult]: For program point L53-3(lines 17 82) no Hoare annotation was computed. [2020-07-28 17:49:54,607 INFO L268 CegarLoopResult]: For program point L45(lines 45 46) no Hoare annotation was computed. [2020-07-28 17:49:54,607 INFO L268 CegarLoopResult]: For program point L45-2(lines 45 46) no Hoare annotation was computed. [2020-07-28 17:49:54,607 INFO L268 CegarLoopResult]: For program point L29(lines 29 30) no Hoare annotation was computed. [2020-07-28 17:49:54,607 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= |ULTIMATE.start___ieee754_sqrtf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 .cse0) .cse0))) (= currentRoundingMode roundNearestTiesToEven)) [2020-07-28 17:49:54,608 INFO L268 CegarLoopResult]: For program point L38(lines 38 42) no Hoare annotation was computed. [2020-07-28 17:49:54,608 INFO L268 CegarLoopResult]: For program point L38-2(lines 38 42) no Hoare annotation was computed. [2020-07-28 17:49:54,608 INFO L268 CegarLoopResult]: For program point L96(lines 96 99) no Hoare annotation was computed. [2020-07-28 17:49:54,608 INFO L268 CegarLoopResult]: For program point L55(lines 55 59) no Hoare annotation was computed. [2020-07-28 17:49:54,608 INFO L268 CegarLoopResult]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2020-07-28 17:49:54,608 INFO L268 CegarLoopResult]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2020-07-28 17:49:54,609 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24)))) (= currentRoundingMode roundNearestTiesToEven)) [2020-07-28 17:49:54,609 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 26) no Hoare annotation was computed. [2020-07-28 17:49:54,611 INFO L268 CegarLoopResult]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2020-07-28 17:49:54,611 INFO L264 CegarLoopResult]: At program point L39-3(lines 39 40) the Hoare annotation is: false [2020-07-28 17:49:54,611 INFO L268 CegarLoopResult]: For program point L39-4(lines 39 40) no Hoare annotation was computed. [2020-07-28 17:49:54,611 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-28 17:49:54,612 INFO L268 CegarLoopResult]: For program point L64(lines 64 73) no Hoare annotation was computed. [2020-07-28 17:49:54,612 INFO L264 CegarLoopResult]: At program point L81(lines 17 82) the Hoare annotation is: (and (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= |ULTIMATE.start___ieee754_sqrtf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 .cse0) .cse0))) (= currentRoundingMode roundNearestTiesToEven)) [2020-07-28 17:49:54,612 INFO L268 CegarLoopResult]: For program point L32(lines 32 33) no Hoare annotation was computed. [2020-07-28 17:49:54,612 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-07-28 17:49:54,613 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 97) no Hoare annotation was computed. [2020-07-28 17:49:54,613 INFO L268 CegarLoopResult]: For program point L66(lines 66 72) no Hoare annotation was computed. [2020-07-28 17:49:54,613 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 17:49:54,613 INFO L268 CegarLoopResult]: For program point L34(lines 34 35) no Hoare annotation was computed. [2020-07-28 17:49:54,614 INFO L268 CegarLoopResult]: For program point L76-1(lines 76 80) no Hoare annotation was computed. [2020-07-28 17:49:54,614 INFO L264 CegarLoopResult]: At program point L76-2(lines 76 80) the Hoare annotation is: false [2020-07-28 17:49:54,614 INFO L268 CegarLoopResult]: For program point L76-3(lines 76 80) no Hoare annotation was computed. [2020-07-28 17:49:54,614 INFO L271 CegarLoopResult]: At program point L101(lines 84 102) the Hoare annotation is: true [2020-07-28 17:49:54,614 INFO L268 CegarLoopResult]: For program point L68(lines 68 71) no Hoare annotation was computed. [2020-07-28 17:49:54,619 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:49:54,620 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:49:54,620 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-28 17:49:54,620 WARN L170 areAnnotationChecker]: L22-3 has no Hoare annotation [2020-07-28 17:49:54,620 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-28 17:49:54,620 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-28 17:49:54,621 WARN L170 areAnnotationChecker]: L22-3 has no Hoare annotation [2020-07-28 17:49:54,621 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-28 17:49:54,621 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-28 17:49:54,625 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-28 17:49:54,626 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-28 17:49:54,626 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2020-07-28 17:49:54,626 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-28 17:49:54,626 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-28 17:49:54,626 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2020-07-28 17:49:54,626 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2020-07-28 17:49:54,626 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:49:54,627 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:49:54,627 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2020-07-28 17:49:54,627 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2020-07-28 17:49:54,627 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:49:54,628 WARN L170 areAnnotationChecker]: L39-4 has no Hoare annotation [2020-07-28 17:49:54,628 WARN L170 areAnnotationChecker]: L39-4 has no Hoare annotation [2020-07-28 17:49:54,628 WARN L170 areAnnotationChecker]: L39-2 has no Hoare annotation [2020-07-28 17:49:54,628 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-28 17:49:54,628 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:49:54,628 WARN L170 areAnnotationChecker]: L39-4 has no Hoare annotation [2020-07-28 17:49:54,629 WARN L170 areAnnotationChecker]: L39-2 has no Hoare annotation [2020-07-28 17:49:54,629 WARN L170 areAnnotationChecker]: L45 has no Hoare annotation [2020-07-28 17:49:54,629 WARN L170 areAnnotationChecker]: L45 has no Hoare annotation [2020-07-28 17:49:54,629 WARN L170 areAnnotationChecker]: L45-2 has no Hoare annotation [2020-07-28 17:49:54,629 WARN L170 areAnnotationChecker]: L53-3 has no Hoare annotation [2020-07-28 17:49:54,629 WARN L170 areAnnotationChecker]: L53-3 has no Hoare annotation [2020-07-28 17:49:54,629 WARN L170 areAnnotationChecker]: L55 has no Hoare annotation [2020-07-28 17:49:54,630 WARN L170 areAnnotationChecker]: L53-3 has no Hoare annotation [2020-07-28 17:49:54,630 WARN L170 areAnnotationChecker]: L53-3 has no Hoare annotation [2020-07-28 17:49:54,630 WARN L170 areAnnotationChecker]: L55 has no Hoare annotation [2020-07-28 17:49:54,630 WARN L170 areAnnotationChecker]: L55 has no Hoare annotation [2020-07-28 17:49:54,630 WARN L170 areAnnotationChecker]: L66 has no Hoare annotation [2020-07-28 17:49:54,633 WARN L170 areAnnotationChecker]: L66 has no Hoare annotation [2020-07-28 17:49:54,633 WARN L170 areAnnotationChecker]: L64 has no Hoare annotation [2020-07-28 17:49:54,633 WARN L170 areAnnotationChecker]: L55-2 has no Hoare annotation [2020-07-28 17:49:54,633 WARN L170 areAnnotationChecker]: L68 has no Hoare annotation [2020-07-28 17:49:54,633 WARN L170 areAnnotationChecker]: L68 has no Hoare annotation [2020-07-28 17:49:54,634 WARN L170 areAnnotationChecker]: L76-1 has no Hoare annotation [2020-07-28 17:49:54,634 WARN L170 areAnnotationChecker]: L76-3 has no Hoare annotation [2020-07-28 17:49:54,634 WARN L170 areAnnotationChecker]: L76-1 has no Hoare annotation [2020-07-28 17:49:54,634 WARN L170 areAnnotationChecker]: L76-1 has no Hoare annotation [2020-07-28 17:49:54,634 WARN L170 areAnnotationChecker]: L76-3 has no Hoare annotation [2020-07-28 17:49:54,637 INFO L163 areAnnotationChecker]: CFG has 1 edges. 1 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:49:54,644 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,646 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,646 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,646 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,647 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,647 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,648 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,648 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,648 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,650 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,651 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,651 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,653 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,653 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,654 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,654 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,654 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,655 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,655 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,655 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,656 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,658 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,658 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,658 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,659 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,659 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,659 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,660 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,660 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,660 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,661 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,661 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,662 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,662 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,663 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,663 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,663 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,664 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,664 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,664 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,664 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,665 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,665 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,666 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,666 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,668 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:49:54,668 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:49:54,668 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,669 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,669 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:49:54,670 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:49:54,670 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,670 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:49:54 BoogieIcfgContainer [2020-07-28 17:49:54,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:49:54,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:49:54,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:49:54,674 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:49:54,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:49:41" (3/4) ... [2020-07-28 17:49:54,679 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 17:49:54,692 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-07-28 17:49:54,692 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 17:49:54,693 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-07-28 17:49:54,724 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2020-07-28 17:49:54,725 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2020-07-28 17:49:54,726 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((1bv32 == \result && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2020-07-28 17:49:54,759 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:49:54,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:49:54,762 INFO L168 Benchmark]: Toolchain (without parser) took 15242.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 960.2 MB in the beginning and 801.0 MB in the end (delta: 159.2 MB). Peak memory consumption was 285.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:49:54,763 INFO L168 Benchmark]: CDTParser took 0.26 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 17:49:54,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:49:54,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.04 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 17:49:54,765 INFO L168 Benchmark]: Boogie Preprocessor took 42.36 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 17:49:54,766 INFO L168 Benchmark]: RCFGBuilder took 1106.58 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: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:49:54,766 INFO L168 Benchmark]: TraceAbstraction took 13556.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 801.0 MB in the end (delta: 280.8 MB). Peak memory consumption was 280.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:49:54,767 INFO L168 Benchmark]: Witness Printer took 86.56 ms. Allocated memory is still 1.2 GB. Free memory is still 801.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:49:54,770 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 0.26 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 388.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.04 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 42.36 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 1106.58 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: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13556.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 801.0 MB in the end (delta: 280.8 MB). Peak memory consumption was 280.8 MB. Max. memory is 11.5 GB. * Witness Printer took 86.56 ms. Allocated memory is still 1.2 GB. Free memory is still 801.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 97]: 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: 76]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant [2020-07-28 17:49:54,789 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,790 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,790 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,790 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,791 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,791 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,792 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,792 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,792 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,793 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,793 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,809 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,810 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,811 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,811 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,811 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,811 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,812 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,812 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,814 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,815 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,815 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,815 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,816 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 13]: Loop Invariant [2020-07-28 17:49:54,817 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,817 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,817 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,819 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,820 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,820 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,820 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,820 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,821 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,821 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,824 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,825 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,825 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,825 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,826 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,826 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,826 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,826 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,827 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,827 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,827 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,829 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,829 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,830 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((1bv32 == \result && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant [2020-07-28 17:49:54,832 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:49:54,833 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:49:54,833 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-07-28 17:49:54,834 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:49:54,835 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-07-28 17:49:54,835 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-07-28 17:49:54,836 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: x == ~fp.div~FLOAT(currentRoundingMode, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)), ~Pluszero~LONGDOUBLE())) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 123 SDslu, 160 SDs, 0 SdLazy, 62 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 11 NumberOfFragments, 101 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 9 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 5 QuantifiedInterpolants, 3568 SizeOfPredicates, 17 NumberOfNonLiveVariables, 90 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...