./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0740.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0740.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25f88ce65e61cc7e7d9ef61e43238296440b1f18 .......................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_0740.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25f88ce65e61cc7e7d9ef61e43238296440b1f18 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:37:13,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:37:13,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:37:13,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:37:13,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:37:13,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:37:13,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:37:13,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:37:13,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:37:13,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:37:13,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:37:13,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:37:13,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:37:13,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:37:13,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:37:13,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:37:13,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:37:13,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:37:13,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:37:13,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:37:13,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:37:13,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:37:13,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:37:13,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:37:13,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:37:13,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:37:13,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:37:13,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:37:13,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:37:13,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:37:13,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:37:13,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:37:13,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:37:13,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:37:13,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:37:13,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:37:13,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:37:13,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:37:13,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:37:13,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:37:13,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:37:13,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:37:13,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:37:13,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:37:13,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:37:13,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:37:13,801 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:37:13,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:37:13,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:37:13,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:37:13,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:37:13,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:37:13,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:37:13,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:37:13,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:37:13,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:37:13,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:37:13,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:37:13,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:37:13,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:37:13,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:37:13,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:37:13,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:37:13,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:37:13,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:37:13,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:37:13,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:37:13,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:37:13,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:37:13,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:37:13,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:37:13,809 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(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25f88ce65e61cc7e7d9ef61e43238296440b1f18 [2020-10-20 00:37:14,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:37:14,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:37:14,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:37:14,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:37:14,068 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:37:14,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2020-10-20 00:37:14,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e083b7260/c3d83ab828244d699d0329607cd2b943/FLAGd0e3a01b7 [2020-10-20 00:37:14,623 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:37:14,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2020-10-20 00:37:14,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e083b7260/c3d83ab828244d699d0329607cd2b943/FLAGd0e3a01b7 [2020-10-20 00:37:14,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e083b7260/c3d83ab828244d699d0329607cd2b943 [2020-10-20 00:37:14,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:37:14,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:37:14,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:37:14,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:37:14,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:37:14,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:37:14" (1/1) ... [2020-10-20 00:37:14,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5204538d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:14, skipping insertion in model container [2020-10-20 00:37:14,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:37:14" (1/1) ... [2020-10-20 00:37:14,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:37:14,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:37:15,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:37:15,338 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:37:15,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:37:15,388 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:37:15,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15 WrapperNode [2020-10-20 00:37:15,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:37:15,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:37:15,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:37:15,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:37:15,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (1/1) ... [2020-10-20 00:37:15,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (1/1) ... [2020-10-20 00:37:15,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:37:15,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:37:15,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:37:15,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:37:15,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (1/1) ... [2020-10-20 00:37:15,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (1/1) ... [2020-10-20 00:37:15,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (1/1) ... [2020-10-20 00:37:15,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (1/1) ... [2020-10-20 00:37:15,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (1/1) ... [2020-10-20 00:37:15,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (1/1) ... [2020-10-20 00:37:15,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (1/1) ... [2020-10-20 00:37:15,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:37:15,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:37:15,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:37:15,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:37:15,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (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 [2020-10-20 00:37:15,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:37:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:37:15,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:37:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:37:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:37:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:37:15,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:37:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:37:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:37:15,866 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:37:15,867 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:37:15,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:37:15 BoogieIcfgContainer [2020-10-20 00:37:15,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:37:15,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:37:15,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:37:15,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:37:15,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:37:14" (1/3) ... [2020-10-20 00:37:15,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb5fe7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:37:15, skipping insertion in model container [2020-10-20 00:37:15,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:15" (2/3) ... [2020-10-20 00:37:15,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb5fe7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:37:15, skipping insertion in model container [2020-10-20 00:37:15,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:37:15" (3/3) ... [2020-10-20 00:37:15,881 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0740.c [2020-10-20 00:37:15,897 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:37:15,906 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:37:15,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:37:15,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:37:15,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:37:15,956 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:37:15,956 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:37:15,956 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:37:15,956 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:37:15,957 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:37:15,957 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:37:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-20 00:37:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:37:15,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:37:15,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:37:15,996 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:37:16,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:37:16,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2020-10-20 00:37:16,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:37:16,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412862448] [2020-10-20 00:37:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:37:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:16,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412862448] [2020-10-20 00:37:16,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:37:16,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:37:16,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164450303] [2020-10-20 00:37:16,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:37:16,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:37:16,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:37:16,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:37:16,172 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-10-20 00:37:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:37:16,192 INFO L93 Difference]: Finished difference Result 65 states and 99 transitions. [2020-10-20 00:37:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:37:16,193 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:37:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:37:16,205 INFO L225 Difference]: With dead ends: 65 [2020-10-20 00:37:16,205 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 00:37:16,209 INFO L677 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 [2020-10-20 00:37:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 00:37:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 00:37:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 00:37:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-10-20 00:37:16,241 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-10-20 00:37:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:37:16,241 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-10-20 00:37:16,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:37:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-10-20 00:37:16,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:37:16,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:37:16,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:37:16,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:37:16,243 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:37:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:37:16,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2020-10-20 00:37:16,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:37:16,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903814390] [2020-10-20 00:37:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:37:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:37:16,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:37:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:37:16,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:37:16,396 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:37:16,396 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:37:16,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:37:16,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:37:16 BoogieIcfgContainer [2020-10-20 00:37:16,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:37:16,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:37:16,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:37:16,432 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:37:16,433 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:37:15" (3/4) ... [2020-10-20 00:37:16,440 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:37:16,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:37:16,446 INFO L168 Benchmark]: Toolchain (without parser) took 1506.13 ms. Allocated memory was 35.7 MB in the beginning and 47.7 MB in the end (delta: 12.1 MB). Free memory was 9.2 MB in the beginning and 23.7 MB in the end (delta: -14.5 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:37:16,450 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 35.7 MB. Free memory was 14.6 MB in the beginning and 14.6 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:37:16,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.16 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 8.3 MB in the beginning and 25.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:16,452 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.04 ms. Allocated memory is still 44.0 MB. Free memory was 25.4 MB in the beginning and 23.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:16,453 INFO L168 Benchmark]: Boogie Preprocessor took 38.07 ms. Allocated memory is still 44.0 MB. Free memory was 23.5 MB in the beginning and 21.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:16,454 INFO L168 Benchmark]: RCFGBuilder took 394.24 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 21.7 MB in the beginning and 15.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:16,455 INFO L168 Benchmark]: TraceAbstraction took 560.17 ms. Allocated memory was 46.1 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). Free memory was 14.7 MB in the beginning and 24.3 MB in the end (delta: -9.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:16,456 INFO L168 Benchmark]: Witness Printer took 8.49 ms. Allocated memory is still 47.7 MB. Free memory was 24.3 MB in the beginning and 23.7 MB in the end (delta: 672.8 kB). Peak memory consumption was 672.8 kB. Max. memory is 14.3 GB. [2020-10-20 00:37:16,462 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 35.7 MB. Free memory was 14.6 MB in the beginning and 14.6 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 446.16 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 8.3 MB in the beginning and 25.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 47.04 ms. Allocated memory is still 44.0 MB. Free memory was 25.4 MB in the beginning and 23.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.07 ms. Allocated memory is still 44.0 MB. Free memory was 23.5 MB in the beginning and 21.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 394.24 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 21.7 MB in the beginning and 15.2 MB in the end (delta: 6.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 560.17 ms. Allocated memory was 46.1 MB in the beginning and 47.7 MB in the end (delta: 1.6 MB). Free memory was 14.7 MB in the beginning and 24.3 MB in the end (delta: -9.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * Witness Printer took 8.49 ms. Allocated memory is still 47.7 MB. Free memory was 24.3 MB in the beginning and 23.7 MB in the end (delta: 672.8 kB). Peak memory consumption was 672.8 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 29. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L93] float x = -1.0f / 0.0f; [L20] float z; [L21] __uint32_t r, hx; [L22] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L29] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L31] COND TRUE !((hx) < 0x7f800000L) [L32] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L95] float res = __ieee754_sqrtf(x); [L15] return x != x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L98] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_0740.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:37:18,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:37:18,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:37:18,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:37:18,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:37:18,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:37:18,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:37:18,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:37:18,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:37:18,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:37:18,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:37:18,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:37:18,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:37:18,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:37:18,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:37:18,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:37:18,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:37:18,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:37:18,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:37:18,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:37:18,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:37:18,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:37:18,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:37:18,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:37:18,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:37:18,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:37:18,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:37:18,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:37:18,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:37:18,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:37:18,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:37:18,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:37:18,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:37:18,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:37:18,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:37:18,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:37:18,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:37:18,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:37:18,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:37:18,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:37:18,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:37:18,749 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:37:18,771 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:37:18,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:37:18,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:37:18,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:37:18,773 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:37:18,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:37:18,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:37:18,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:37:18,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:37:18,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:37:18,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:37:18,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:37:18,774 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:37:18,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:37:18,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:37:18,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:37:18,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:37:18,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:37:18,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:37:18,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:37:18,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:37:18,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:37:18,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:37:18,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:37:18,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:37:18,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:37:18,777 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:37:18,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:37:18,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:37:18,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:37:18,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:37:18,778 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(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25f88ce65e61cc7e7d9ef61e43238296440b1f18 [2020-10-20 00:37:18,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:37:18,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:37:18,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:37:18,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:37:18,995 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:37:18,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2020-10-20 00:37:19,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f80901b/889cf5e9ff54437cadc7e4ca6bc4f72d/FLAG5812be53e [2020-10-20 00:37:19,551 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:37:19,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0740.c [2020-10-20 00:37:19,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f80901b/889cf5e9ff54437cadc7e4ca6bc4f72d/FLAG5812be53e [2020-10-20 00:37:19,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f80901b/889cf5e9ff54437cadc7e4ca6bc4f72d [2020-10-20 00:37:19,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:37:19,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:37:19,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:37:19,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:37:19,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:37:19,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:37:19" (1/1) ... [2020-10-20 00:37:19,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@133b29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:19, skipping insertion in model container [2020-10-20 00:37:19,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:37:19" (1/1) ... [2020-10-20 00:37:19,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:37:19,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:37:20,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:37:20,236 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:37:20,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:37:20,289 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:37:20,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20 WrapperNode [2020-10-20 00:37:20,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:37:20,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:37:20,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:37:20,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:37:20,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (1/1) ... [2020-10-20 00:37:20,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (1/1) ... [2020-10-20 00:37:20,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:37:20,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:37:20,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:37:20,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:37:20,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (1/1) ... [2020-10-20 00:37:20,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (1/1) ... [2020-10-20 00:37:20,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (1/1) ... [2020-10-20 00:37:20,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (1/1) ... [2020-10-20 00:37:20,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (1/1) ... [2020-10-20 00:37:20,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (1/1) ... [2020-10-20 00:37:20,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (1/1) ... [2020-10-20 00:37:20,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:37:20,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:37:20,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:37:20,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:37:20,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (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 [2020-10-20 00:37:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:37:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:37:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-10-20 00:37:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:37:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:37:20,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:37:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-20 00:37:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:37:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:37:21,364 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:37:21,364 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:37:21,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:37:21 BoogieIcfgContainer [2020-10-20 00:37:21,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:37:21,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:37:21,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:37:21,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:37:21,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:37:19" (1/3) ... [2020-10-20 00:37:21,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668d9f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:37:21, skipping insertion in model container [2020-10-20 00:37:21,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:37:20" (2/3) ... [2020-10-20 00:37:21,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@668d9f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:37:21, skipping insertion in model container [2020-10-20 00:37:21,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:37:21" (3/3) ... [2020-10-20 00:37:21,388 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0740.c [2020-10-20 00:37:21,400 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:37:21,407 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:37:21,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:37:21,447 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:37:21,448 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:37:21,448 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:37:21,448 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:37:21,448 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:37:21,449 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:37:21,449 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:37:21,449 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:37:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-20 00:37:21,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:37:21,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:37:21,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:37:21,471 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:37:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:37:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1903734416, now seen corresponding path program 1 times [2020-10-20 00:37:21,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:37:21,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257855546] [2020-10-20 00:37:21,486 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 [2020-10-20 00:37:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:21,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:37:21,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:21,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:37:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:21,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257855546] [2020-10-20 00:37:21,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:37:21,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:37:21,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457509263] [2020-10-20 00:37:21,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:37:21,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:37:21,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:37:21,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:37:21,727 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-10-20 00:37:21,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:37:21,749 INFO L93 Difference]: Finished difference Result 65 states and 99 transitions. [2020-10-20 00:37:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:37:21,750 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:37:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:37:21,762 INFO L225 Difference]: With dead ends: 65 [2020-10-20 00:37:21,763 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 00:37:21,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:37:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 00:37:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 00:37:21,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 00:37:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2020-10-20 00:37:21,807 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 9 [2020-10-20 00:37:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:37:21,807 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2020-10-20 00:37:21,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:37:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2020-10-20 00:37:21,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:37:21,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:37:21,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:37:22,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:37:22,014 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:37:22,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:37:22,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1484616397, now seen corresponding path program 1 times [2020-10-20 00:37:22,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:37:22,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549866172] [2020-10-20 00:37:22,016 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 [2020-10-20 00:37:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:22,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:37:22,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:22,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:37:26,167 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-10-20 00:37:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:26,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549866172] [2020-10-20 00:37:26,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:37:26,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-20 00:37:26,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259160243] [2020-10-20 00:37:26,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 00:37:26,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:37:26,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 00:37:26,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:37:26,192 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand 10 states. [2020-10-20 00:37:27,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:37:27,136 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2020-10-20 00:37:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:37:27,137 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2020-10-20 00:37:27,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:37:27,138 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:37:27,139 INFO L226 Difference]: Without dead ends: 30 [2020-10-20 00:37:27,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-20 00:37:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-20 00:37:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-20 00:37:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-20 00:37:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2020-10-20 00:37:27,146 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 10 [2020-10-20 00:37:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:37:27,146 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2020-10-20 00:37:27,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 00:37:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2020-10-20 00:37:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:37:27,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:37:27,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:37:27,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:37:27,357 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:37:27,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:37:27,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1245605874, now seen corresponding path program 1 times [2020-10-20 00:37:27,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:37:27,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700878743] [2020-10-20 00:37:27,361 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 [2020-10-20 00:37:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:37:27,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:37:27,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:37:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:27,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:37:27,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:37:27,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700878743] [2020-10-20 00:37:27,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:37:27,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:37:27,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743290000] [2020-10-20 00:37:27,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:37:27,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:37:27,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:37:27,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:37:27,712 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 8 states. [2020-10-20 00:37:27,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:37:27,848 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2020-10-20 00:37:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:37:27,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-20 00:37:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:37:27,849 INFO L225 Difference]: With dead ends: 30 [2020-10-20 00:37:27,849 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:37:27,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:37:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:37:27,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:37:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:37:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:37:27,851 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-10-20 00:37:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:37:27,851 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:37:27,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:37:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:37:27,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:37:28,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:37:28,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:37:28,180 INFO L274 CegarLoopResult]: For program point L36(lines 36 37) no Hoare annotation was computed. [2020-10-20 00:37:28,180 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 00:37:28,180 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-20 00:37:28,180 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:37:28,180 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:37:28,180 INFO L274 CegarLoopResult]: For program point L78-1(lines 78 82) no Hoare annotation was computed. [2020-10-20 00:37:28,181 INFO L270 CegarLoopResult]: At program point L78-2(lines 78 82) the Hoare annotation is: false [2020-10-20 00:37:28,181 INFO L274 CegarLoopResult]: For program point L78-3(lines 78 82) no Hoare annotation was computed. [2020-10-20 00:37:28,181 INFO L277 CegarLoopResult]: At program point L103(lines 86 104) the Hoare annotation is: true [2020-10-20 00:37:28,181 INFO L274 CegarLoopResult]: For program point L70(lines 70 73) no Hoare annotation was computed. [2020-10-20 00:37:28,181 INFO L270 CegarLoopResult]: At program point L55-2(lines 55 64) the Hoare annotation is: false [2020-10-20 00:37:28,181 INFO L274 CegarLoopResult]: For program point L55-3(lines 19 84) no Hoare annotation was computed. [2020-10-20 00:37:28,181 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-10-20 00:37:28,182 INFO L274 CegarLoopResult]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2020-10-20 00:37:28,182 INFO L274 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-10-20 00:37:28,182 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= |ULTIMATE.start___ieee754_sqrtf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 .cse0) .cse0)))) [2020-10-20 00:37:28,182 INFO L274 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-10-20 00:37:28,182 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 44) no Hoare annotation was computed. [2020-10-20 00:37:28,182 INFO L274 CegarLoopResult]: For program point L98(lines 98 101) no Hoare annotation was computed. [2020-10-20 00:37:28,183 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:37:28,183 INFO L274 CegarLoopResult]: For program point L57(lines 57 61) no Hoare annotation was computed. [2020-10-20 00:37:28,183 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 00:37:28,183 INFO L274 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2020-10-20 00:37:28,183 INFO L274 CegarLoopResult]: For program point L57-2(lines 57 61) no Hoare annotation was computed. [2020-10-20 00:37:28,183 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 28) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24)))) [2020-10-20 00:37:28,183 INFO L274 CegarLoopResult]: For program point L24-3(lines 24 28) no Hoare annotation was computed. [2020-10-20 00:37:28,185 INFO L274 CegarLoopResult]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2020-10-20 00:37:28,185 INFO L270 CegarLoopResult]: At program point L41-3(lines 41 42) the Hoare annotation is: false [2020-10-20 00:37:28,185 INFO L274 CegarLoopResult]: For program point L41-4(lines 41 42) no Hoare annotation was computed. [2020-10-20 00:37:28,185 INFO L274 CegarLoopResult]: For program point L66(lines 66 75) no Hoare annotation was computed. [2020-10-20 00:37:28,185 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:37:28,185 INFO L270 CegarLoopResult]: At program point L83(lines 19 84) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___ieee754_sqrtf_~x (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= |ULTIMATE.start___ieee754_sqrtf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse0 .cse0) .cse0)))) [2020-10-20 00:37:28,186 INFO L274 CegarLoopResult]: For program point L34(lines 34 35) no Hoare annotation was computed. [2020-10-20 00:37:28,186 INFO L274 CegarLoopResult]: For program point L68(lines 68 74) no Hoare annotation was computed. [2020-10-20 00:37:28,196 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,197 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,198 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,198 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,198 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,198 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,199 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,199 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,199 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,214 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,214 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,214 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,220 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,220 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,221 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,221 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,221 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,222 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,222 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,222 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,223 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,223 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,223 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,224 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,225 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,226 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,226 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,226 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,227 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,227 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,227 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,228 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,228 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,229 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,229 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,229 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,230 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,230 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,230 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,231 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,231 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,231 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,232 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,232 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,233 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,233 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,233 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,233 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,234 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,234 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,234 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,235 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,235 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,235 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,236 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,236 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:37:28 BoogieIcfgContainer [2020-10-20 00:37:28,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:37:28,239 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:37:28,239 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:37:28,240 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:37:28,240 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:37:21" (3/4) ... [2020-10-20 00:37:28,244 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:37:28,257 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-20 00:37:28,257 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 00:37:28,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:37:28,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:37:28,291 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())) [2020-10-20 00:37:28,292 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())) [2020-10-20 00:37:28,328 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:37:28,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:37:28,330 INFO L168 Benchmark]: Toolchain (without parser) took 8452.35 ms. Allocated memory was 36.7 MB in the beginning and 50.3 MB in the end (delta: 13.6 MB). Free memory was 17.2 MB in the beginning and 21.8 MB in the end (delta: -4.6 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:28,331 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 34.6 MB. Free memory was 10.6 MB in the beginning and 10.5 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:37:28,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.24 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 16.3 MB in the beginning and 23.4 MB in the end (delta: -7.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:28,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.50 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 21.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:28,333 INFO L168 Benchmark]: Boogie Preprocessor took 42.11 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 19.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:28,333 INFO L168 Benchmark]: RCFGBuilder took 995.71 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 19.3 MB in the beginning and 27.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:28,335 INFO L168 Benchmark]: TraceAbstraction took 6859.30 ms. Allocated memory was 46.1 MB in the beginning and 50.3 MB in the end (delta: 4.2 MB). Free memory was 27.6 MB in the beginning and 26.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:28,336 INFO L168 Benchmark]: Witness Printer took 89.10 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 21.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:37:28,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 34.6 MB. Free memory was 10.6 MB in the beginning and 10.5 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 405.24 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 16.3 MB in the beginning and 23.4 MB in the end (delta: -7.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 49.50 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 21.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 42.11 ms. Allocated memory is still 44.0 MB. Free memory was 21.3 MB in the beginning and 19.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 995.71 ms. Allocated memory was 44.0 MB in the beginning and 46.1 MB in the end (delta: 2.1 MB). Free memory was 19.3 MB in the beginning and 27.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6859.30 ms. Allocated memory was 46.1 MB in the beginning and 50.3 MB in the end (delta: 4.2 MB). Free memory was 27.6 MB in the beginning and 26.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 14.3 GB. * Witness Printer took 89.10 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 21.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant [2020-10-20 00:37:28,364 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,364 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,364 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,364 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,365 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,365 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,365 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,365 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,365 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,367 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,367 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,367 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,367 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,367 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,372 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,372 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,372 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,373 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,373 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,373 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,373 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE())) && 1bv32 == \result) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant [2020-10-20 00:37:28,374 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,374 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,374 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,375 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,375 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,375 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant [2020-10-20 00:37:28,378 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,378 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,378 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,378 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,378 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,378 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,379 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,379 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,379 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,379 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,383 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,384 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-10-20 00:37:28,385 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,385 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-10-20 00:37:28,385 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.mul~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())), ~fp.div~FLOAT(~roundNearestTiesToEven, ~fp.neg~FLOAT(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0)), ~Pluszero~LONGDOUBLE())) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 49 SDslu, 130 SDs, 0 SdLazy, 53 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 11 NumberOfFragments, 100 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 5 QuantifiedInterpolants, 3550 SizeOfPredicates, 17 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...