./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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/double_req_bl_1032d.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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 ....................................................................................................................................................................................................................................................................................................................................................................................... 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/double_req_bl_1032d.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 bc388f4eaa6aadf687b7d35c78a026571921b2b6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 17:42:12,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:42:12,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:42:12,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:42:12,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:42:12,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:42:12,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:42:12,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:42:12,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:42:12,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:42:12,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:42:12,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:42:12,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:42:12,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:42:12,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:42:12,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:42:12,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:42:12,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:42:12,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:42:12,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:42:12,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:42:12,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:42:12,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:42:12,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:42:12,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:42:12,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:42:12,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:42:12,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:42:12,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:42:12,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:42:12,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:42:12,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:42:12,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:42:12,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:42:12,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:42:12,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:42:12,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:42:12,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:42:12,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:42:12,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:42:12,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:42:12,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:42:12,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:42:12,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:42:12,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:42:12,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:42:12,393 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:42:12,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:42:12,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:42:12,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:42:12,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:42:12,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:42:12,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:42:12,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:42:12,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:42:12,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:42:12,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:42:12,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:42:12,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:42:12,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:42:12,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:42:12,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:42:12,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:42:12,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:42:12,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:42:12,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:42:12,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:42:12,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:42:12,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:42:12,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:42:12,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:42:12,402 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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 [2020-07-28 17:42:12,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:42:12,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:42:12,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:42:12,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:42:12,750 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:42:12,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-07-28 17:42:12,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9c9cd5f/1f7d1622a3d64b589236040f78708832/FLAG322c7851a [2020-07-28 17:42:13,356 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:42:13,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-07-28 17:42:13,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9c9cd5f/1f7d1622a3d64b589236040f78708832/FLAG322c7851a [2020-07-28 17:42:13,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a9c9cd5f/1f7d1622a3d64b589236040f78708832 [2020-07-28 17:42:13,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:42:13,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:42:13,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:42:13,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:42:13,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:42:13,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:42:13" (1/1) ... [2020-07-28 17:42:13,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9c7564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:13, skipping insertion in model container [2020-07-28 17:42:13,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:42:13" (1/1) ... [2020-07-28 17:42:13,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:42:13,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:42:13,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:42:13,948 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:42:13,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:42:14,076 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:42:14,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14 WrapperNode [2020-07-28 17:42:14,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:42:14,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:42:14,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:42:14,079 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:42:14,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (1/1) ... [2020-07-28 17:42:14,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (1/1) ... [2020-07-28 17:42:14,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:42:14,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:42:14,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:42:14,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:42:14,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (1/1) ... [2020-07-28 17:42:14,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (1/1) ... [2020-07-28 17:42:14,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (1/1) ... [2020-07-28 17:42:14,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (1/1) ... [2020-07-28 17:42:14,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (1/1) ... [2020-07-28 17:42:14,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (1/1) ... [2020-07-28 17:42:14,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (1/1) ... [2020-07-28 17:42:14,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:42:14,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:42:14,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:42:14,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:42:14,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (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 17:42:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-28 17:42:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:42:14,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-28 17:42:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:42:14,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:42:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:42:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:42:14,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:42:14,842 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:42:14,843 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:42:14,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:14 BoogieIcfgContainer [2020-07-28 17:42:14,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:42:14,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:42:14,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:42:14,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:42:14,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:42:13" (1/3) ... [2020-07-28 17:42:14,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276da443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:42:14, skipping insertion in model container [2020-07-28 17:42:14,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:14" (2/3) ... [2020-07-28 17:42:14,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276da443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:42:14, skipping insertion in model container [2020-07-28 17:42:14,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:14" (3/3) ... [2020-07-28 17:42:14,856 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-07-28 17:42:14,867 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:42:14,875 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:42:14,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:42:14,915 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:42:14,915 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:42:14,916 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:42:14,916 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:42:14,916 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:42:14,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:42:14,916 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:42:14,916 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:42:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-28 17:42:14,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 17:42:14,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:42:14,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:42:14,939 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:42:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:42:14,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-07-28 17:42:14,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:42:14,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137867005] [2020-07-28 17:42:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:42:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:42:15,090 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {32#true} is VALID [2020-07-28 17:42:15,091 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#true} havoc main_#res;havoc main_#t~ret10, main_#t~ret11, main_~x~0, main_~res~0;main_~x~0 := ~someBinaryArithmeticDOUBLEoperation(~someUnaryDOUBLEoperation(1.0), 0.0);round_double_#in~x := main_~x~0;havoc round_double_#res;havoc round_double_#t~mem0, round_double_#t~union1, round_double_#t~mem2, round_double_#t~union3, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, round_double_~exponent_mask~0, round_double_~exponent_mask~1, round_double_~tmp~0, round_double_#t~mem4, round_double_#t~union5.lsw, round_double_#t~union5.msw, round_double_~#iw_u~0.base, round_double_~#iw_u~0.offset, round_double_~x, round_double_~msw~0, round_double_~exponent_less_1023~0, round_double_~lsw~0;round_double_~x := round_double_#in~x;havoc round_double_~msw~0;havoc round_double_~exponent_less_1023~0;havoc round_double_~lsw~0; {32#true} is VALID [2020-07-28 17:42:15,092 INFO L280 TraceCheckUtils]: 2: Hoare triple {32#true} assume !true; {33#false} is VALID [2020-07-28 17:42:15,093 INFO L280 TraceCheckUtils]: 3: Hoare triple {33#false} round_double_~exponent_less_1023~0 := ~bitwiseAnd(round_double_~msw~0, 2146435072) / 1048576 - 1023; {33#false} is VALID [2020-07-28 17:42:15,093 INFO L280 TraceCheckUtils]: 4: Hoare triple {33#false} assume round_double_~exponent_less_1023~0 < 20; {33#false} is VALID [2020-07-28 17:42:15,094 INFO L280 TraceCheckUtils]: 5: Hoare triple {33#false} assume !(round_double_~exponent_less_1023~0 < 0);round_double_~exponent_mask~0 := ~shiftRight(1048575, round_double_~exponent_less_1023~0); {33#false} is VALID [2020-07-28 17:42:15,094 INFO L280 TraceCheckUtils]: 6: Hoare triple {33#false} assume 0 == ~bitwiseAnd(round_double_~msw~0, round_double_~exponent_mask~0) % 4294967296 && 0 == round_double_~lsw~0 % 4294967296;round_double_#res := round_double_~x; {33#false} is VALID [2020-07-28 17:42:15,094 INFO L280 TraceCheckUtils]: 7: Hoare triple {33#false} main_#t~ret10 := round_double_#res;main_~res~0 := main_#t~ret10;havoc main_#t~ret10;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem6, isinf_double_#t~union7, isinf_double_#t~mem8, isinf_double_#t~union9, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {33#false} is VALID [2020-07-28 17:42:15,095 INFO L280 TraceCheckUtils]: 8: Hoare triple {33#false} assume !true; {33#false} is VALID [2020-07-28 17:42:15,095 INFO L280 TraceCheckUtils]: 9: Hoare triple {33#false} isinf_double_~hx~0 := ~bitwiseAnd(isinf_double_~hx~0, 2147483647);isinf_double_~hx~0 := (if ~bitwiseOr(isinf_double_~hx~0, ~bitwiseOr(isinf_double_~lx~0, -isinf_double_~lx~0) / 2147483648) % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseOr(isinf_double_~hx~0, ~bitwiseOr(isinf_double_~lx~0, -isinf_double_~lx~0) / 2147483648) % 4294967296 % 4294967296 else ~bitwiseOr(isinf_double_~hx~0, ~bitwiseOr(isinf_double_~lx~0, -isinf_double_~lx~0) / 2147483648) % 4294967296 % 4294967296 - 4294967296);isinf_double_~hx~0 := 2146435072 - isinf_double_~hx~0;isinf_double_#res := 1 - (if ~bitwiseOr(isinf_double_~hx~0, -isinf_double_~hx~0) / 2147483648 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseOr(isinf_double_~hx~0, -isinf_double_~hx~0) / 2147483648 % 4294967296 % 4294967296 else ~bitwiseOr(isinf_double_~hx~0, -isinf_double_~hx~0) / 2147483648 % 4294967296 % 4294967296 - 4294967296); {33#false} is VALID [2020-07-28 17:42:15,095 INFO L280 TraceCheckUtils]: 10: Hoare triple {33#false} main_#t~ret11 := isinf_double_#res;assume -2147483648 <= main_#t~ret11 && main_#t~ret11 <= 2147483647; {33#false} is VALID [2020-07-28 17:42:15,096 INFO L280 TraceCheckUtils]: 11: Hoare triple {33#false} assume 0 == main_#t~ret11;havoc main_#t~ret11; {33#false} is VALID [2020-07-28 17:42:15,096 INFO L280 TraceCheckUtils]: 12: Hoare triple {33#false} assume !false; {33#false} is VALID [2020-07-28 17:42:15,099 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 17:42:15,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137867005] [2020-07-28 17:42:15,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:42:15,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:42:15,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040851983] [2020-07-28 17:42:15,109 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 17:42:15,111 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:42:15,115 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:42:15,150 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:15,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:42:15,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:42:15,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:42:15,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:42:15,165 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-07-28 17:42:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:15,257 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2020-07-28 17:42:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:42:15,257 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 17:42:15,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:42:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:42:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2020-07-28 17:42:15,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:42:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2020-07-28 17:42:15,273 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 84 transitions. [2020-07-28 17:42:15,410 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 84 edges. 84 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:15,423 INFO L225 Difference]: With dead ends: 56 [2020-07-28 17:42:15,423 INFO L226 Difference]: Without dead ends: 26 [2020-07-28 17:42:15,427 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 17:42:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-28 17:42:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-28 17:42:15,464 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:42:15,465 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:15,466 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:15,466 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:15,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:15,470 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-07-28 17:42:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-07-28 17:42:15,471 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:15,472 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:15,472 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:15,472 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:15,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:15,476 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-07-28 17:42:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-07-28 17:42:15,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:15,477 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:15,478 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:42:15,478 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:42:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-28 17:42:15,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-07-28 17:42:15,482 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-07-28 17:42:15,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:42:15,483 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-07-28 17:42:15,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:42:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-07-28 17:42:15,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 17:42:15,485 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:42:15,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:42:15,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:42:15,486 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:42:15,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:42:15,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-07-28 17:42:15,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:42:15,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467899179] [2020-07-28 17:42:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:42:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:42:15,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:42:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:42:15,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:42:15,784 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:42:15,784 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:42:15,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:42:15,816 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:42:15,817 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:42:15,817 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-28 17:42:15,817 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-28 17:42:15,817 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:42:15,818 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:42:15,818 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 17:42:15,818 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:42:15,818 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:42:15,819 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:42:15,819 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:42:15,819 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:42:15,819 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:42:15,820 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-28 17:42:15,820 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-28 17:42:15,820 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-28 17:42:15,820 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-28 17:42:15,821 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-28 17:42:15,821 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-28 17:42:15,821 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2020-07-28 17:42:15,821 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2020-07-28 17:42:15,822 WARN L170 areAnnotationChecker]: L27-2 has no Hoare annotation [2020-07-28 17:42:15,822 WARN L170 areAnnotationChecker]: L60 has no Hoare annotation [2020-07-28 17:42:15,822 WARN L170 areAnnotationChecker]: L54-1 has no Hoare annotation [2020-07-28 17:42:15,822 WARN L170 areAnnotationChecker]: L54-1 has no Hoare annotation [2020-07-28 17:42:15,822 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:42:15,823 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:42:15,823 WARN L170 areAnnotationChecker]: L66-2 has no Hoare annotation [2020-07-28 17:42:15,823 WARN L170 areAnnotationChecker]: L66-2 has no Hoare annotation [2020-07-28 17:42:15,823 WARN L170 areAnnotationChecker]: L54 has no Hoare annotation [2020-07-28 17:42:15,824 WARN L170 areAnnotationChecker]: L54 has no Hoare annotation [2020-07-28 17:42:15,824 WARN L170 areAnnotationChecker]: L54-2 has no Hoare annotation [2020-07-28 17:42:15,824 WARN L170 areAnnotationChecker]: L49-2 has no Hoare annotation [2020-07-28 17:42:15,824 WARN L170 areAnnotationChecker]: L66-1 has no Hoare annotation [2020-07-28 17:42:15,825 WARN L170 areAnnotationChecker]: L66-1 has no Hoare annotation [2020-07-28 17:42:15,825 WARN L170 areAnnotationChecker]: L66-3 has no Hoare annotation [2020-07-28 17:42:15,825 WARN L170 areAnnotationChecker]: L75 has no Hoare annotation [2020-07-28 17:42:15,825 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-28 17:42:15,825 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-28 17:42:15,826 WARN L170 areAnnotationChecker]: L91 has no Hoare annotation [2020-07-28 17:42:15,826 WARN L170 areAnnotationChecker]: L91 has no Hoare annotation [2020-07-28 17:42:15,826 WARN L170 areAnnotationChecker]: L95 has no Hoare annotation [2020-07-28 17:42:15,827 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:42:15,827 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 17:42:15,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:42:15 BoogieIcfgContainer [2020-07-28 17:42:15,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:42:15,831 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:42:15,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:42:15,831 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:42:15,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:14" (3/4) ... [2020-07-28 17:42:15,836 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:42:15,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:42:15,840 INFO L168 Benchmark]: Toolchain (without parser) took 2138.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -61.8 MB). Peak memory consumption was 77.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:15,841 INFO L168 Benchmark]: CDTParser took 0.78 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 17:42:15,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -168.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:15,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.82 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 17:42:15,844 INFO L168 Benchmark]: Boogie Preprocessor took 39.73 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 17:42:15,845 INFO L168 Benchmark]: RCFGBuilder took 668.74 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: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:15,845 INFO L168 Benchmark]: TraceAbstraction took 981.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:15,846 INFO L168 Benchmark]: Witness Printer took 6.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:42:15,850 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 0.78 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 374.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -168.4 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.73 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 668.74 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: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 981.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 31, overapproximation of bitwiseOr at line 73, overapproximation of someBinaryArithmeticDOUBLEoperation at line 86, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND TRUE exponent_less_1023 < 20 [L25] COND FALSE !(exponent_less_1023 < 0) [L31] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L32] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L33] return x; [L87] double res = round_double(x); [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 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=29occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 17:42:17,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:42:17,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:42:17,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:42:17,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:42:17,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:42:17,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:42:17,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:42:17,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:42:17,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:42:17,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:42:17,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:42:17,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:42:17,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:42:17,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:42:17,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:42:17,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:42:17,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:42:17,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:42:17,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:42:17,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:42:17,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:42:17,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:42:17,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:42:17,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:42:17,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:42:17,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:42:17,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:42:17,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:42:17,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:42:17,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:42:17,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:42:17,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:42:17,848 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:42:17,849 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:42:17,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:42:17,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:42:17,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:42:17,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:42:17,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:42:17,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:42:17,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:42:17,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:42:17,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:42:17,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:42:17,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:42:17,873 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:42:17,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:42:17,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:42:17,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:42:17,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:42:17,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:42:17,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:42:17,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:42:17,876 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:42:17,876 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:42:17,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:42:17,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:42:17,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:42:17,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:42:17,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:42:17,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:42:17,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:42:17,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:42:17,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:42:17,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:42:17,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:42:17,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:42:17,880 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:42:17,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:42:17,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:42:17,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:42:17,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:42:17,881 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 -> bc388f4eaa6aadf687b7d35c78a026571921b2b6 [2020-07-28 17:42:18,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:42:18,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:42:18,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:42:18,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:42:18,237 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:42:18,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-07-28 17:42:18,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6103a423a/d77d6440b97a48b3b475d0d961e79037/FLAG3a042e153 [2020-07-28 17:42:18,789 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:42:18,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-07-28 17:42:18,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6103a423a/d77d6440b97a48b3b475d0d961e79037/FLAG3a042e153 [2020-07-28 17:42:19,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6103a423a/d77d6440b97a48b3b475d0d961e79037 [2020-07-28 17:42:19,099 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:42:19,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:42:19,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:42:19,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:42:19,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:42:19,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf8548b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19, skipping insertion in model container [2020-07-28 17:42:19,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:42:19,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:42:19,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:42:19,401 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:42:19,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:42:19,532 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:42:19,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19 WrapperNode [2020-07-28 17:42:19,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:42:19,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:42:19,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:42:19,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:42:19,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:42:19,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:42:19,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:42:19,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:42:19,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (1/1) ... [2020-07-28 17:42:19,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:42:19,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:42:19,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:42:19,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:42:19,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (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 17:42:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-07-28 17:42:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-07-28 17:42:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:42:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-07-28 17:42:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:42:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:42:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-07-28 17:42:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:42:20,440 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:42:20,441 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:42:20,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:20 BoogieIcfgContainer [2020-07-28 17:42:20,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:42:20,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:42:20,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:42:20,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:42:20,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:42:19" (1/3) ... [2020-07-28 17:42:20,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406834e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:42:20, skipping insertion in model container [2020-07-28 17:42:20,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:42:19" (2/3) ... [2020-07-28 17:42:20,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406834e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:42:20, skipping insertion in model container [2020-07-28 17:42:20,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:20" (3/3) ... [2020-07-28 17:42:20,455 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-07-28 17:42:20,463 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:42:20,471 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:42:20,486 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:42:20,508 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:42:20,508 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:42:20,508 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:42:20,508 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:42:20,509 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:42:20,509 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:42:20,509 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:42:20,509 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:42:20,527 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-28 17:42:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-28 17:42:20,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:42:20,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:42:20,534 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:42:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:42:20,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-07-28 17:42:20,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:42:20,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106949279] [2020-07-28 17:42:20,551 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 17:42:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:42:20,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:42:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:42:20,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:42:20,722 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {32#true} is VALID [2020-07-28 17:42:20,723 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#true} havoc main_#res;havoc main_#t~ret10, main_#t~ret11, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~DOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~DOUBLE(currentRoundingMode, 1.0)), ~Pluszero~DOUBLE());round_double_#in~x := main_~x~0;havoc round_double_#res;havoc round_double_#t~mem0, round_double_#t~union1, round_double_#t~mem2, round_double_#t~union3, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, round_double_~exponent_mask~0, round_double_~exponent_mask~1, round_double_~tmp~0, round_double_#t~mem4, round_double_#t~union5.lsw, round_double_#t~union5.msw, round_double_~#iw_u~0.base, round_double_~#iw_u~0.offset, round_double_~x, round_double_~msw~0, round_double_~exponent_less_1023~0, round_double_~lsw~0;round_double_~x := round_double_#in~x;havoc round_double_~msw~0;havoc round_double_~exponent_less_1023~0;havoc round_double_~lsw~0; {32#true} is VALID [2020-07-28 17:42:20,724 INFO L280 TraceCheckUtils]: 2: Hoare triple {32#true} assume !true; {33#false} is VALID [2020-07-28 17:42:20,725 INFO L280 TraceCheckUtils]: 3: Hoare triple {33#false} round_double_~exponent_less_1023~0 := ~bvsub32(~bvashr32(~bvand32(2146435072bv32, round_double_~msw~0), 20bv32), 1023bv32); {33#false} is VALID [2020-07-28 17:42:20,725 INFO L280 TraceCheckUtils]: 4: Hoare triple {33#false} assume ~bvslt32(round_double_~exponent_less_1023~0, 20bv32); {33#false} is VALID [2020-07-28 17:42:20,725 INFO L280 TraceCheckUtils]: 5: Hoare triple {33#false} assume !~bvslt32(round_double_~exponent_less_1023~0, 0bv32);round_double_~exponent_mask~0 := ~bvashr32(1048575bv32, round_double_~exponent_less_1023~0); {33#false} is VALID [2020-07-28 17:42:20,726 INFO L280 TraceCheckUtils]: 6: Hoare triple {33#false} assume 0bv32 == ~bvand32(round_double_~msw~0, round_double_~exponent_mask~0) && 0bv32 == round_double_~lsw~0;round_double_#res := round_double_~x; {33#false} is VALID [2020-07-28 17:42:20,726 INFO L280 TraceCheckUtils]: 7: Hoare triple {33#false} main_#t~ret10 := round_double_#res;main_~res~0 := main_#t~ret10;havoc main_#t~ret10;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem6, isinf_double_#t~union7, isinf_double_#t~mem8, isinf_double_#t~union9, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {33#false} is VALID [2020-07-28 17:42:20,726 INFO L280 TraceCheckUtils]: 8: Hoare triple {33#false} assume !true; {33#false} is VALID [2020-07-28 17:42:20,727 INFO L280 TraceCheckUtils]: 9: Hoare triple {33#false} isinf_double_~hx~0 := ~bvand32(2147483647bv32, isinf_double_~hx~0);isinf_double_~hx~0 := ~bvor32(isinf_double_~hx~0, ~bvlshr32(~bvor32(isinf_double_~lx~0, ~bvneg32(isinf_double_~lx~0)), 31bv32));isinf_double_~hx~0 := ~bvsub32(2146435072bv32, isinf_double_~hx~0);isinf_double_#res := ~bvsub32(1bv32, ~bvlshr32(~bvor32(isinf_double_~hx~0, ~bvneg32(isinf_double_~hx~0)), 31bv32)); {33#false} is VALID [2020-07-28 17:42:20,727 INFO L280 TraceCheckUtils]: 10: Hoare triple {33#false} main_#t~ret11 := isinf_double_#res; {33#false} is VALID [2020-07-28 17:42:20,728 INFO L280 TraceCheckUtils]: 11: Hoare triple {33#false} assume 0bv32 == main_#t~ret11;havoc main_#t~ret11; {33#false} is VALID [2020-07-28 17:42:20,728 INFO L280 TraceCheckUtils]: 12: Hoare triple {33#false} assume !false; {33#false} is VALID [2020-07-28 17:42:20,732 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 17:42:20,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:42:20,754 INFO L280 TraceCheckUtils]: 12: Hoare triple {33#false} assume !false; {33#false} is VALID [2020-07-28 17:42:20,755 INFO L280 TraceCheckUtils]: 11: Hoare triple {33#false} assume 0bv32 == main_#t~ret11;havoc main_#t~ret11; {33#false} is VALID [2020-07-28 17:42:20,755 INFO L280 TraceCheckUtils]: 10: Hoare triple {33#false} main_#t~ret11 := isinf_double_#res; {33#false} is VALID [2020-07-28 17:42:20,755 INFO L280 TraceCheckUtils]: 9: Hoare triple {33#false} isinf_double_~hx~0 := ~bvand32(2147483647bv32, isinf_double_~hx~0);isinf_double_~hx~0 := ~bvor32(isinf_double_~hx~0, ~bvlshr32(~bvor32(isinf_double_~lx~0, ~bvneg32(isinf_double_~lx~0)), 31bv32));isinf_double_~hx~0 := ~bvsub32(2146435072bv32, isinf_double_~hx~0);isinf_double_#res := ~bvsub32(1bv32, ~bvlshr32(~bvor32(isinf_double_~hx~0, ~bvneg32(isinf_double_~hx~0)), 31bv32)); {33#false} is VALID [2020-07-28 17:42:20,756 INFO L280 TraceCheckUtils]: 8: Hoare triple {33#false} assume !true; {33#false} is VALID [2020-07-28 17:42:20,756 INFO L280 TraceCheckUtils]: 7: Hoare triple {33#false} main_#t~ret10 := round_double_#res;main_~res~0 := main_#t~ret10;havoc main_#t~ret10;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem6, isinf_double_#t~union7, isinf_double_#t~mem8, isinf_double_#t~union9, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {33#false} is VALID [2020-07-28 17:42:20,756 INFO L280 TraceCheckUtils]: 6: Hoare triple {33#false} assume 0bv32 == ~bvand32(round_double_~msw~0, round_double_~exponent_mask~0) && 0bv32 == round_double_~lsw~0;round_double_#res := round_double_~x; {33#false} is VALID [2020-07-28 17:42:20,757 INFO L280 TraceCheckUtils]: 5: Hoare triple {33#false} assume !~bvslt32(round_double_~exponent_less_1023~0, 0bv32);round_double_~exponent_mask~0 := ~bvashr32(1048575bv32, round_double_~exponent_less_1023~0); {33#false} is VALID [2020-07-28 17:42:20,757 INFO L280 TraceCheckUtils]: 4: Hoare triple {33#false} assume ~bvslt32(round_double_~exponent_less_1023~0, 20bv32); {33#false} is VALID [2020-07-28 17:42:20,757 INFO L280 TraceCheckUtils]: 3: Hoare triple {33#false} round_double_~exponent_less_1023~0 := ~bvsub32(~bvashr32(~bvand32(2146435072bv32, round_double_~msw~0), 20bv32), 1023bv32); {33#false} is VALID [2020-07-28 17:42:20,758 INFO L280 TraceCheckUtils]: 2: Hoare triple {32#true} assume !true; {33#false} is VALID [2020-07-28 17:42:20,759 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#true} havoc main_#res;havoc main_#t~ret10, main_#t~ret11, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~DOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~DOUBLE(currentRoundingMode, 1.0)), ~Pluszero~DOUBLE());round_double_#in~x := main_~x~0;havoc round_double_#res;havoc round_double_#t~mem0, round_double_#t~union1, round_double_#t~mem2, round_double_#t~union3, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, round_double_~exponent_mask~0, round_double_~exponent_mask~1, round_double_~tmp~0, round_double_#t~mem4, round_double_#t~union5.lsw, round_double_#t~union5.msw, round_double_~#iw_u~0.base, round_double_~#iw_u~0.offset, round_double_~x, round_double_~msw~0, round_double_~exponent_less_1023~0, round_double_~lsw~0;round_double_~x := round_double_#in~x;havoc round_double_~msw~0;havoc round_double_~exponent_less_1023~0;havoc round_double_~lsw~0; {32#true} is VALID [2020-07-28 17:42:20,759 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {32#true} is VALID [2020-07-28 17:42:20,760 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 17:42:20,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106949279] [2020-07-28 17:42:20,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:42:20,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:42:20,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401988674] [2020-07-28 17:42:20,770 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 17:42:20,772 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:42:20,776 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:42:20,809 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:20,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:42:20,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:42:20,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:42:20,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:42:20,820 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-07-28 17:42:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:21,011 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2020-07-28 17:42:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:42:21,011 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-28 17:42:21,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:42:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:42:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2020-07-28 17:42:21,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:42:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 84 transitions. [2020-07-28 17:42:21,024 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 84 transitions. [2020-07-28 17:42:21,253 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 84 edges. 84 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:21,265 INFO L225 Difference]: With dead ends: 56 [2020-07-28 17:42:21,265 INFO L226 Difference]: Without dead ends: 26 [2020-07-28 17:42:21,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 17:42:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-28 17:42:21,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-28 17:42:21,308 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:42:21,309 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:21,309 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:21,309 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:21,313 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-07-28 17:42:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-07-28 17:42:21,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:21,315 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:21,315 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:21,315 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-28 17:42:21,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:21,319 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-07-28 17:42:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-07-28 17:42:21,320 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:21,320 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:21,320 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:42:21,321 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:42:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-28 17:42:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-07-28 17:42:21,326 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-07-28 17:42:21,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:42:21,326 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-07-28 17:42:21,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:42:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-07-28 17:42:21,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 17:42:21,328 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:42:21,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:42:21,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:42:21,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:42:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:42:21,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-07-28 17:42:21,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:42:21,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247822312] [2020-07-28 17:42:21,548 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 17:42:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:42:21,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-28 17:42:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:42:21,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:42:21,988 INFO L280 TraceCheckUtils]: 0: Hoare triple {256#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {256#true} is VALID [2020-07-28 17:42:21,993 INFO L280 TraceCheckUtils]: 1: Hoare triple {256#true} havoc main_#res;havoc main_#t~ret10, main_#t~ret11, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~DOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~DOUBLE(currentRoundingMode, 1.0)), ~Pluszero~DOUBLE());round_double_#in~x := main_~x~0;havoc round_double_#res;havoc round_double_#t~mem0, round_double_#t~union1, round_double_#t~mem2, round_double_#t~union3, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, round_double_~exponent_mask~0, round_double_~exponent_mask~1, round_double_~tmp~0, round_double_#t~mem4, round_double_#t~union5.lsw, round_double_#t~union5.msw, round_double_~#iw_u~0.base, round_double_~#iw_u~0.offset, round_double_~x, round_double_~msw~0, round_double_~exponent_less_1023~0, round_double_~lsw~0;round_double_~x := round_double_#in~x;havoc round_double_~msw~0;havoc round_double_~exponent_less_1023~0;havoc round_double_~lsw~0; {264#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_round_double_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53))))} is VALID [2020-07-28 17:42:22,002 INFO L280 TraceCheckUtils]: 2: Hoare triple {264#(exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_round_double_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53))))} call round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset := #Ultimate.allocOnStack(8bv32);call write~intFLOATTYPE8(round_double_~x, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, 8bv32);call round_double_#t~mem0 := read~intINTTYPE4(round_double_~#ew_u~0.base, ~bvadd32(4bv32, round_double_~#ew_u~0.offset), 4bv32);round_double_~msw~0 := round_double_#t~mem0;call write~intFLOATTYPE8(round_double_#t~union1, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, 8bv32);havoc round_double_#t~mem0;havoc round_double_#t~union1;call round_double_#t~mem2 := read~intINTTYPE4(round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, 4bv32);round_double_~lsw~0 := round_double_#t~mem2;call write~intFLOATTYPE8(round_double_#t~union3, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, 8bv32);havoc round_double_#t~mem2;havoc round_double_#t~union3;call ULTIMATE.dealloc(round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset);havoc round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset; {268#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53))) (= ((_ extract 63 32) v_skolemized_v_prenex_2_3) ULTIMATE.start_round_double_~msw~0)))} is VALID [2020-07-28 17:42:22,004 INFO L280 TraceCheckUtils]: 3: Hoare triple {268#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53))) (= ((_ extract 63 32) v_skolemized_v_prenex_2_3) ULTIMATE.start_round_double_~msw~0)))} goto; {268#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53))) (= ((_ extract 63 32) v_skolemized_v_prenex_2_3) ULTIMATE.start_round_double_~msw~0)))} is VALID [2020-07-28 17:42:22,010 INFO L280 TraceCheckUtils]: 4: Hoare triple {268#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53))) (= ((_ extract 63 32) v_skolemized_v_prenex_2_3) ULTIMATE.start_round_double_~msw~0)))} round_double_~exponent_less_1023~0 := ~bvsub32(~bvashr32(~bvand32(2146435072bv32, round_double_~msw~0), 20bv32), 1023bv32); {275#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) v_skolemized_v_prenex_2_3)) (_ bv20 32)) (_ bv4294966273 32)) ULTIMATE.start_round_double_~exponent_less_1023~0) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53)))))} is VALID [2020-07-28 17:42:22,016 INFO L280 TraceCheckUtils]: 5: Hoare triple {275#(exists ((v_skolemized_v_prenex_2_3 (_ BitVec 64)) (currentRoundingMode RoundingMode)) (and (= (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) v_skolemized_v_prenex_2_3)) (_ bv20 32)) (_ bv4294966273 32)) ULTIMATE.start_round_double_~exponent_less_1023~0) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 11 53) currentRoundingMode 1.0)) (_ +zero 11 53)))))} assume ~bvslt32(round_double_~exponent_less_1023~0, 20bv32); {257#false} is VALID [2020-07-28 17:42:22,017 INFO L280 TraceCheckUtils]: 6: Hoare triple {257#false} assume !~bvslt32(round_double_~exponent_less_1023~0, 0bv32);round_double_~exponent_mask~0 := ~bvashr32(1048575bv32, round_double_~exponent_less_1023~0); {257#false} is VALID [2020-07-28 17:42:22,017 INFO L280 TraceCheckUtils]: 7: Hoare triple {257#false} assume 0bv32 == ~bvand32(round_double_~msw~0, round_double_~exponent_mask~0) && 0bv32 == round_double_~lsw~0;round_double_#res := round_double_~x; {257#false} is VALID [2020-07-28 17:42:22,017 INFO L280 TraceCheckUtils]: 8: Hoare triple {257#false} main_#t~ret10 := round_double_#res;main_~res~0 := main_#t~ret10;havoc main_#t~ret10;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem6, isinf_double_#t~union7, isinf_double_#t~mem8, isinf_double_#t~union9, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {257#false} is VALID [2020-07-28 17:42:22,018 INFO L280 TraceCheckUtils]: 9: Hoare triple {257#false} call isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset := #Ultimate.allocOnStack(8bv32);call write~intFLOATTYPE8(isinf_double_~x, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, 8bv32);call isinf_double_#t~mem6 := read~intINTTYPE4(isinf_double_~#ew_u~1.base, ~bvadd32(4bv32, isinf_double_~#ew_u~1.offset), 4bv32);isinf_double_~hx~0 := isinf_double_#t~mem6;call write~intFLOATTYPE8(isinf_double_#t~union7, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, 8bv32);havoc isinf_double_#t~mem6;havoc isinf_double_#t~union7;call isinf_double_#t~mem8 := read~intINTTYPE4(isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, 4bv32);isinf_double_~lx~0 := isinf_double_#t~mem8;call write~intFLOATTYPE8(isinf_double_#t~union9, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, 8bv32);havoc isinf_double_#t~mem8;havoc isinf_double_#t~union9;call ULTIMATE.dealloc(isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset);havoc isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset; {257#false} is VALID [2020-07-28 17:42:22,019 INFO L280 TraceCheckUtils]: 10: Hoare triple {257#false} goto; {257#false} is VALID [2020-07-28 17:42:22,019 INFO L280 TraceCheckUtils]: 11: Hoare triple {257#false} isinf_double_~hx~0 := ~bvand32(2147483647bv32, isinf_double_~hx~0);isinf_double_~hx~0 := ~bvor32(isinf_double_~hx~0, ~bvlshr32(~bvor32(isinf_double_~lx~0, ~bvneg32(isinf_double_~lx~0)), 31bv32));isinf_double_~hx~0 := ~bvsub32(2146435072bv32, isinf_double_~hx~0);isinf_double_#res := ~bvsub32(1bv32, ~bvlshr32(~bvor32(isinf_double_~hx~0, ~bvneg32(isinf_double_~hx~0)), 31bv32)); {257#false} is VALID [2020-07-28 17:42:22,019 INFO L280 TraceCheckUtils]: 12: Hoare triple {257#false} main_#t~ret11 := isinf_double_#res; {257#false} is VALID [2020-07-28 17:42:22,020 INFO L280 TraceCheckUtils]: 13: Hoare triple {257#false} assume 0bv32 == main_#t~ret11;havoc main_#t~ret11; {257#false} is VALID [2020-07-28 17:42:22,020 INFO L280 TraceCheckUtils]: 14: Hoare triple {257#false} assume !false; {257#false} is VALID [2020-07-28 17:42:22,025 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 17:42:22,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:42:22,274 INFO L280 TraceCheckUtils]: 14: Hoare triple {257#false} assume !false; {257#false} is VALID [2020-07-28 17:42:22,275 INFO L280 TraceCheckUtils]: 13: Hoare triple {257#false} assume 0bv32 == main_#t~ret11;havoc main_#t~ret11; {257#false} is VALID [2020-07-28 17:42:22,275 INFO L280 TraceCheckUtils]: 12: Hoare triple {257#false} main_#t~ret11 := isinf_double_#res; {257#false} is VALID [2020-07-28 17:42:22,276 INFO L280 TraceCheckUtils]: 11: Hoare triple {257#false} isinf_double_~hx~0 := ~bvand32(2147483647bv32, isinf_double_~hx~0);isinf_double_~hx~0 := ~bvor32(isinf_double_~hx~0, ~bvlshr32(~bvor32(isinf_double_~lx~0, ~bvneg32(isinf_double_~lx~0)), 31bv32));isinf_double_~hx~0 := ~bvsub32(2146435072bv32, isinf_double_~hx~0);isinf_double_#res := ~bvsub32(1bv32, ~bvlshr32(~bvor32(isinf_double_~hx~0, ~bvneg32(isinf_double_~hx~0)), 31bv32)); {257#false} is VALID [2020-07-28 17:42:22,276 INFO L280 TraceCheckUtils]: 10: Hoare triple {257#false} goto; {257#false} is VALID [2020-07-28 17:42:22,276 INFO L280 TraceCheckUtils]: 9: Hoare triple {257#false} call isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset := #Ultimate.allocOnStack(8bv32);call write~intFLOATTYPE8(isinf_double_~x, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, 8bv32);call isinf_double_#t~mem6 := read~intINTTYPE4(isinf_double_~#ew_u~1.base, ~bvadd32(4bv32, isinf_double_~#ew_u~1.offset), 4bv32);isinf_double_~hx~0 := isinf_double_#t~mem6;call write~intFLOATTYPE8(isinf_double_#t~union7, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, 8bv32);havoc isinf_double_#t~mem6;havoc isinf_double_#t~union7;call isinf_double_#t~mem8 := read~intINTTYPE4(isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, 4bv32);isinf_double_~lx~0 := isinf_double_#t~mem8;call write~intFLOATTYPE8(isinf_double_#t~union9, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, 8bv32);havoc isinf_double_#t~mem8;havoc isinf_double_#t~union9;call ULTIMATE.dealloc(isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset);havoc isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset; {257#false} is VALID [2020-07-28 17:42:22,276 INFO L280 TraceCheckUtils]: 8: Hoare triple {257#false} main_#t~ret10 := round_double_#res;main_~res~0 := main_#t~ret10;havoc main_#t~ret10;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem6, isinf_double_#t~union7, isinf_double_#t~mem8, isinf_double_#t~union9, isinf_double_~#ew_u~1.base, isinf_double_~#ew_u~1.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {257#false} is VALID [2020-07-28 17:42:22,277 INFO L280 TraceCheckUtils]: 7: Hoare triple {257#false} assume 0bv32 == ~bvand32(round_double_~msw~0, round_double_~exponent_mask~0) && 0bv32 == round_double_~lsw~0;round_double_#res := round_double_~x; {257#false} is VALID [2020-07-28 17:42:22,277 INFO L280 TraceCheckUtils]: 6: Hoare triple {257#false} assume !~bvslt32(round_double_~exponent_less_1023~0, 0bv32);round_double_~exponent_mask~0 := ~bvashr32(1048575bv32, round_double_~exponent_less_1023~0); {257#false} is VALID [2020-07-28 17:42:22,278 INFO L280 TraceCheckUtils]: 5: Hoare triple {333#(not (bvslt ULTIMATE.start_round_double_~exponent_less_1023~0 (_ bv20 32)))} assume ~bvslt32(round_double_~exponent_less_1023~0, 20bv32); {257#false} is VALID [2020-07-28 17:42:22,280 INFO L280 TraceCheckUtils]: 4: Hoare triple {337#(not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) ULTIMATE.start_round_double_~msw~0) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32)))} round_double_~exponent_less_1023~0 := ~bvsub32(~bvashr32(~bvand32(2146435072bv32, round_double_~msw~0), 20bv32), 1023bv32); {333#(not (bvslt ULTIMATE.start_round_double_~exponent_less_1023~0 (_ bv20 32)))} is VALID [2020-07-28 17:42:22,281 INFO L280 TraceCheckUtils]: 3: Hoare triple {337#(not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) ULTIMATE.start_round_double_~msw~0) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32)))} goto; {337#(not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) ULTIMATE.start_round_double_~msw~0) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32)))} is VALID [2020-07-28 17:42:22,291 INFO L280 TraceCheckUtils]: 2: Hoare triple {344#(forall ((v_skolemized_v_prenex_2_3 (_ BitVec 64))) (or (not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) v_skolemized_v_prenex_2_3)) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32))) (not (= ULTIMATE.start_round_double_~x (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3))))))} call round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset := #Ultimate.allocOnStack(8bv32);call write~intFLOATTYPE8(round_double_~x, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, 8bv32);call round_double_#t~mem0 := read~intINTTYPE4(round_double_~#ew_u~0.base, ~bvadd32(4bv32, round_double_~#ew_u~0.offset), 4bv32);round_double_~msw~0 := round_double_#t~mem0;call write~intFLOATTYPE8(round_double_#t~union1, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, 8bv32);havoc round_double_#t~mem0;havoc round_double_#t~union1;call round_double_#t~mem2 := read~intINTTYPE4(round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, 4bv32);round_double_~lsw~0 := round_double_#t~mem2;call write~intFLOATTYPE8(round_double_#t~union3, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, 8bv32);havoc round_double_#t~mem2;havoc round_double_#t~union3;call ULTIMATE.dealloc(round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset);havoc round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset; {337#(not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) ULTIMATE.start_round_double_~msw~0) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32)))} is VALID [2020-07-28 17:42:22,297 INFO L280 TraceCheckUtils]: 1: Hoare triple {256#true} havoc main_#res;havoc main_#t~ret10, main_#t~ret11, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~DOUBLE(currentRoundingMode, ~fp.neg~DOUBLE(~to_fp~DOUBLE(currentRoundingMode, 1.0)), ~Pluszero~DOUBLE());round_double_#in~x := main_~x~0;havoc round_double_#res;havoc round_double_#t~mem0, round_double_#t~union1, round_double_#t~mem2, round_double_#t~union3, round_double_~#ew_u~0.base, round_double_~#ew_u~0.offset, round_double_~exponent_mask~0, round_double_~exponent_mask~1, round_double_~tmp~0, round_double_#t~mem4, round_double_#t~union5.lsw, round_double_#t~union5.msw, round_double_~#iw_u~0.base, round_double_~#iw_u~0.offset, round_double_~x, round_double_~msw~0, round_double_~exponent_less_1023~0, round_double_~lsw~0;round_double_~x := round_double_#in~x;havoc round_double_~msw~0;havoc round_double_~exponent_less_1023~0;havoc round_double_~lsw~0; {344#(forall ((v_skolemized_v_prenex_2_3 (_ BitVec 64))) (or (not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) v_skolemized_v_prenex_2_3)) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32))) (not (= ULTIMATE.start_round_double_~x (fp ((_ extract 63 63) v_skolemized_v_prenex_2_3) ((_ extract 62 52) v_skolemized_v_prenex_2_3) ((_ extract 51 0) v_skolemized_v_prenex_2_3))))))} is VALID [2020-07-28 17:42:22,297 INFO L280 TraceCheckUtils]: 0: Hoare triple {256#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {256#true} is VALID [2020-07-28 17:42:22,299 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 17:42:22,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247822312] [2020-07-28 17:42:22,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:42:22,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-07-28 17:42:22,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357070103] [2020-07-28 17:42:22,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-28 17:42:22,303 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:42:22,304 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-28 17:42:22,378 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:22,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-28 17:42:22,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:42:22,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-28 17:42:22,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-28 17:42:22,380 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2020-07-28 17:42:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:23,315 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-07-28 17:42:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-28 17:42:23,316 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-07-28 17:42:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:42:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:42:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2020-07-28 17:42:23,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 17:42:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2020-07-28 17:42:23,320 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 40 transitions. [2020-07-28 17:42:23,587 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:42:23,589 INFO L225 Difference]: With dead ends: 34 [2020-07-28 17:42:23,589 INFO L226 Difference]: Without dead ends: 16 [2020-07-28 17:42:23,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-07-28 17:42:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-28 17:42:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-28 17:42:23,611 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:42:23,611 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand 16 states. [2020-07-28 17:42:23,611 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-28 17:42:23,611 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-28 17:42:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:23,612 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-28 17:42:23,613 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-28 17:42:23,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:23,613 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:23,613 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-28 17:42:23,614 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-28 17:42:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:42:23,615 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-07-28 17:42:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-28 17:42:23,615 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:42:23,616 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:42:23,616 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:42:23,616 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:42:23,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-28 17:42:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-07-28 17:42:23,617 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-07-28 17:42:23,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:42:23,618 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-07-28 17:42:23,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-28 17:42:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-07-28 17:42:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 17:42:23,619 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:42:23,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:42:23,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:42:23,820 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:42:23,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:42:23,821 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-07-28 17:42:23,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:42:23,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584610736] [2020-07-28 17:42:23,823 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 17:42:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:42:23,990 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:42:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:42:24,123 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:42:24,172 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-07-28 17:42:24,172 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:42:24,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-07-28 17:42:24,403 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:42:24,404 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:42:24,405 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-28 17:42:24,405 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-28 17:42:24,405 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:42:24,405 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-28 17:42:24,406 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 17:42:24,406 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:42:24,406 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-28 17:42:24,406 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:42:24,406 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-28 17:42:24,407 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:42:24,407 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-28 17:42:24,407 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-28 17:42:24,407 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-28 17:42:24,407 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-28 17:42:24,412 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-28 17:42:24,415 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-28 17:42:24,416 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-28 17:42:24,416 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2020-07-28 17:42:24,416 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2020-07-28 17:42:24,416 WARN L170 areAnnotationChecker]: L27-2 has no Hoare annotation [2020-07-28 17:42:24,416 WARN L170 areAnnotationChecker]: L60 has no Hoare annotation [2020-07-28 17:42:24,417 WARN L170 areAnnotationChecker]: L54-1 has no Hoare annotation [2020-07-28 17:42:24,417 WARN L170 areAnnotationChecker]: L54-1 has no Hoare annotation [2020-07-28 17:42:24,417 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:42:24,417 WARN L170 areAnnotationChecker]: L49 has no Hoare annotation [2020-07-28 17:42:24,417 WARN L170 areAnnotationChecker]: L66-2 has no Hoare annotation [2020-07-28 17:42:24,418 WARN L170 areAnnotationChecker]: L66-2 has no Hoare annotation [2020-07-28 17:42:24,418 WARN L170 areAnnotationChecker]: L54 has no Hoare annotation [2020-07-28 17:42:24,418 WARN L170 areAnnotationChecker]: L54 has no Hoare annotation [2020-07-28 17:42:24,418 WARN L170 areAnnotationChecker]: L54-2 has no Hoare annotation [2020-07-28 17:42:24,418 WARN L170 areAnnotationChecker]: L49-2 has no Hoare annotation [2020-07-28 17:42:24,420 WARN L170 areAnnotationChecker]: L66-1 has no Hoare annotation [2020-07-28 17:42:24,420 WARN L170 areAnnotationChecker]: L66-1 has no Hoare annotation [2020-07-28 17:42:24,420 WARN L170 areAnnotationChecker]: L66-3 has no Hoare annotation [2020-07-28 17:42:24,420 WARN L170 areAnnotationChecker]: L75 has no Hoare annotation [2020-07-28 17:42:24,421 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-28 17:42:24,421 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-28 17:42:24,422 WARN L170 areAnnotationChecker]: L91 has no Hoare annotation [2020-07-28 17:42:24,423 WARN L170 areAnnotationChecker]: L91 has no Hoare annotation [2020-07-28 17:42:24,423 WARN L170 areAnnotationChecker]: L95 has no Hoare annotation [2020-07-28 17:42:24,423 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:42:24,423 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 17:42:24,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:42:24 BoogieIcfgContainer [2020-07-28 17:42:24,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:42:24,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:42:24,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:42:24,430 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:42:24,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:42:20" (3/4) ... [2020-07-28 17:42:24,435 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 17:42:24,487 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:42:24,488 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:42:24,491 INFO L168 Benchmark]: Toolchain (without parser) took 5389.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.8 MB in the beginning and 899.4 MB in the end (delta: 51.4 MB). Peak memory consumption was 174.6 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:24,492 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:42:24,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:24,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.62 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 17:42:24,494 INFO L168 Benchmark]: Boogie Preprocessor took 44.78 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 17:42:24,495 INFO L168 Benchmark]: RCFGBuilder took 803.12 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: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:24,496 INFO L168 Benchmark]: TraceAbstraction took 3981.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 899.4 MB in the end (delta: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:42:24,497 INFO L168 Benchmark]: Witness Printer took 58.19 ms. Allocated memory is still 1.2 GB. Free memory is still 899.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:42:24,501 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 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 430.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 123.2 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 803.12 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: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3981.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 899.4 MB in the end (delta: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 11.5 GB. * Witness Printer took 58.19 ms. Allocated memory is still 1.2 GB. Free memory is still 899.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 91]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L86] double x = -1.0 / 0.0; [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND FALSE !(exponent_less_1023 < 20) [L38] COND TRUE exponent_less_1023 > 51 [L39] COND TRUE exponent_less_1023 == 1024 [L40] return x + x; [L87] double res = round_double(x); [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 45 SDslu, 7 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 5 QuantifiedInterpolants, 2332 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...