./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0831.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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_0831.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14218179970cdda4c2f749c75b7f78aa74dcc86b .......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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_0831.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14218179970cdda4c2f749c75b7f78aa74dcc86b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:52:57,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:52:57,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:52:57,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:52:57,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:52:57,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:52:57,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:52:57,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:52:57,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:52:57,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:52:57,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:52:57,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:52:57,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:52:57,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:52:57,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:52:57,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:52:57,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:52:57,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:52:57,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:52:57,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:52:57,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:52:57,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:52:57,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:52:57,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:52:57,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:52:57,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:52:57,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:52:57,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:52:57,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:52:57,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:52:57,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:52:57,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:52:57,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:52:57,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:52:57,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:52:57,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:52:57,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:52:57,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:52:57,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:52:57,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:52:57,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:52:57,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:52:57,927 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:52:57,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:52:57,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:52:57,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:52:57,932 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:52:57,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:52:57,933 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:52:57,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:52:57,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:52:57,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:52:57,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:52:57,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:52:57,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:52:57,935 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:52:57,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:52:57,935 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:52:57,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:52:57,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:52:57,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:52:57,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:52:57,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:52:57,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:52:57,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:52:57,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:52:57,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:52:57,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:52:57,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:52:57,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:52:57,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:52:57,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14218179970cdda4c2f749c75b7f78aa74dcc86b [2019-11-28 16:52:58,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:52:58,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:52:58,270 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:52:58,272 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:52:58,273 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:52:58,274 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2019-11-28 16:52:58,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e057b06/1ae91554e78d465fab2543ff4381fb0a/FLAG6f5a6263b [2019-11-28 16:52:58,784 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:52:58,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2019-11-28 16:52:58,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e057b06/1ae91554e78d465fab2543ff4381fb0a/FLAG6f5a6263b [2019-11-28 16:52:59,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e057b06/1ae91554e78d465fab2543ff4381fb0a [2019-11-28 16:52:59,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:52:59,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:52:59,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:52:59,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:52:59,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:52:59,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb70adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59, skipping insertion in model container [2019-11-28 16:52:59,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:52:59,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:52:59,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:52:59,471 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:52:59,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:52:59,605 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:52:59,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59 WrapperNode [2019-11-28 16:52:59,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:52:59,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:52:59,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:52:59,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:52:59,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:52:59,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:52:59,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:52:59,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:52:59,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (1/1) ... [2019-11-28 16:52:59,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:52:59,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:52:59,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:52:59,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:52:59,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (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 [2019-11-28 16:52:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:52:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:52:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:52:59,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:52:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:52:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:52:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:52:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-11-28 16:52:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:53:00,225 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:53:00,225 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:53:00,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:00 BoogieIcfgContainer [2019-11-28 16:53:00,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:53:00,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:53:00,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:53:00,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:53:00,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:52:59" (1/3) ... [2019-11-28 16:53:00,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212bd9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:00, skipping insertion in model container [2019-11-28 16:53:00,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:52:59" (2/3) ... [2019-11-28 16:53:00,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212bd9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:00, skipping insertion in model container [2019-11-28 16:53:00,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:00" (3/3) ... [2019-11-28 16:53:00,235 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2019-11-28 16:53:00,244 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:53:00,252 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:53:00,262 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:53:00,281 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:53:00,281 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:53:00,281 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:53:00,281 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:53:00,282 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:53:00,282 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:53:00,282 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:53:00,282 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:53:00,295 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-11-28 16:53:00,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:53:00,302 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:00,303 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:00,303 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:00,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:00,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1903272656, now seen corresponding path program 1 times [2019-11-28 16:53:00,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:53:00,317 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878394994] [2019-11-28 16:53:00,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:53:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:53:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:00,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878394994] [2019-11-28 16:53:00,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:53:00,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:53:00,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223137866] [2019-11-28 16:53:00,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:53:00,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:53:00,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:53:00,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:53:00,485 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-11-28 16:53:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:53:00,503 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2019-11-28 16:53:00,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:53:00,505 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-28 16:53:00,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:53:00,514 INFO L225 Difference]: With dead ends: 72 [2019-11-28 16:53:00,515 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 16:53:00,518 INFO L630 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 [2019-11-28 16:53:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 16:53:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-28 16:53:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 16:53:00,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2019-11-28 16:53:00,555 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 9 [2019-11-28 16:53:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:53:00,555 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2019-11-28 16:53:00,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:53:00,556 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2019-11-28 16:53:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:53:00,556 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:00,557 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:00,557 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:00,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:00,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1485078157, now seen corresponding path program 1 times [2019-11-28 16:53:00,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:53:00,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556502855] [2019-11-28 16:53:00,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:53:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:53:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:53:00,678 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:53:00,678 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:53:00,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:53:00 BoogieIcfgContainer [2019-11-28 16:53:00,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:53:00,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:53:00,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:53:00,721 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:53:00,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:00" (3/4) ... [2019-11-28 16:53:00,726 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:53:00,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:53:00,729 INFO L168 Benchmark]: Toolchain (without parser) took 1536.16 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -76.3 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:00,730 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:00,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -138.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:00,732 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:00,732 INFO L168 Benchmark]: Boogie Preprocessor took 37.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:00,733 INFO L168 Benchmark]: RCFGBuilder took 515.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:00,734 INFO L168 Benchmark]: TraceAbstraction took 492.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:00,734 INFO L168 Benchmark]: Witness Printer took 5.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:00,739 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 411.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -138.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 66.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 515.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 492.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 121]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of bitwiseAnd at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L116] float x = 0.0f / 0.0f; [L37] float y, hi, lo, c, t; [L38] __int32_t k = 0, xsb, sx; [L39] __uint32_t hx; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L42] ieee_float_shape_type gf_u; [L43] gf_u.value = (x) [L44] EXPR gf_u.word [L44] (sx) = gf_u.word [L46] xsb = (sx >> 31) & 1 [L47] hx = sx & 0x7fffffff VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L49] COND TRUE ((hx) > 0x7f800000L) [L50] return x + x; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L117] float res = __ieee754_expf(x); [L13] return x != x; VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L120] COND TRUE !isnan_float(res) [L121] __VERIFIER_error() VAL [halF_exp={6:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={5:0}, ln2LO_exp={3:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 47 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=37occurred 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, 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-f470102 [2019-11-28 16:53:02,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:53:02,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:53:02,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:53:02,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:53:02,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:53:02,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:53:02,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:53:02,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:53:02,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:53:02,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:53:02,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:53:02,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:53:02,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:53:02,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:53:02,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:53:02,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:53:02,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:53:02,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:53:02,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:53:02,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:53:02,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:53:02,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:53:02,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:53:02,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:53:02,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:53:02,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:53:02,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:53:02,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:53:02,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:53:02,843 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:53:02,844 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:53:02,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:53:02,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:53:02,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:53:02,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:53:02,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:53:02,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:53:02,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:53:02,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:53:02,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:53:02,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:53:02,889 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:53:02,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:53:02,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:53:02,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:53:02,897 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:53:02,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:53:02,900 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:53:02,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:53:02,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:53:02,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:53:02,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:53:02,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:53:02,901 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:53:02,904 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:53:02,904 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:53:02,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:53:02,905 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:53:02,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:53:02,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:53:02,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:53:02,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:53:02,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:53:02,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:53:02,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:53:02,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:53:02,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:53:02,909 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:53:02,909 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:53:02,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:53:02,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:53:02,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:53:02,911 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14218179970cdda4c2f749c75b7f78aa74dcc86b [2019-11-28 16:53:03,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:53:03,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:53:03,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:53:03,279 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:53:03,280 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:53:03,281 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2019-11-28 16:53:03,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051d27f7e/a9aa8a07ac144cb6a2599ab52b716a40/FLAGa5d2201f1 [2019-11-28 16:53:03,840 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:53:03,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0831.c [2019-11-28 16:53:03,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051d27f7e/a9aa8a07ac144cb6a2599ab52b716a40/FLAGa5d2201f1 [2019-11-28 16:53:04,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051d27f7e/a9aa8a07ac144cb6a2599ab52b716a40 [2019-11-28 16:53:04,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:53:04,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:53:04,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:53:04,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:53:04,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:53:04,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b8413c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04, skipping insertion in model container [2019-11-28 16:53:04,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:53:04,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:53:04,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:53:04,651 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:53:04,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:53:04,782 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:53:04,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04 WrapperNode [2019-11-28 16:53:04,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:53:04,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:53:04,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:53:04,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:53:04,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:53:04,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:53:04,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:53:04,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:53:04,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (1/1) ... [2019-11-28 16:53:04,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:53:04,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:53:04,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:53:04,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:53:04,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (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 [2019-11-28 16:53:04,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2019-11-28 16:53:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:53:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-11-28 16:53:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:53:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:53:04,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:53:04,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-28 16:53:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:53:04,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:53:13,310 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:53:13,311 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-28 16:53:13,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:13 BoogieIcfgContainer [2019-11-28 16:53:13,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:53:13,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:53:13,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:53:13,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:53:13,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:53:04" (1/3) ... [2019-11-28 16:53:13,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c17e322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:13, skipping insertion in model container [2019-11-28 16:53:13,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:53:04" (2/3) ... [2019-11-28 16:53:13,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c17e322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:53:13, skipping insertion in model container [2019-11-28 16:53:13,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:13" (3/3) ... [2019-11-28 16:53:13,321 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831.c [2019-11-28 16:53:13,330 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:53:13,336 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:53:13,347 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:53:13,373 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:53:13,373 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:53:13,373 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:53:13,374 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:53:13,374 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:53:13,374 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:53:13,375 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:53:13,375 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:53:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-11-28 16:53:13,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 16:53:13,397 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:13,398 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:13,398 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:13,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1903272656, now seen corresponding path program 1 times [2019-11-28 16:53:13,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:53:13,417 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176552451] [2019-11-28 16:53:13,417 INFO L94 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 [2019-11-28 16:53:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:53:13,981 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:53:13,986 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:53:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:14,000 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:53:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:14,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176552451] [2019-11-28 16:53:14,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:53:14,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:53:14,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572345919] [2019-11-28 16:53:14,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:53:14,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:53:14,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:53:14,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:53:14,033 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-11-28 16:53:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:53:14,057 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2019-11-28 16:53:14,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:53:14,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-28 16:53:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:53:14,072 INFO L225 Difference]: With dead ends: 72 [2019-11-28 16:53:14,072 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 16:53:14,076 INFO L630 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 [2019-11-28 16:53:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 16:53:14,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-28 16:53:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 16:53:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2019-11-28 16:53:14,110 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 9 [2019-11-28 16:53:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:53:14,110 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2019-11-28 16:53:14,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:53:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2019-11-28 16:53:14,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:53:14,111 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:14,111 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:14,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:53:14,313 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:14,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:14,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1485078157, now seen corresponding path program 1 times [2019-11-28 16:53:14,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:53:14,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797020271] [2019-11-28 16:53:14,316 INFO L94 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 [2019-11-28 16:53:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:53:14,815 INFO L264 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 16:53:14,819 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:53:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:14,941 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:53:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:15,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797020271] [2019-11-28 16:53:15,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:53:15,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-28 16:53:15,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044352412] [2019-11-28 16:53:15,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 16:53:15,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:53:15,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 16:53:15,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:53:15,351 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 10 states. [2019-11-28 16:53:29,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:53:29,652 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2019-11-28 16:53:29,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:53:29,653 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2019-11-28 16:53:29,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:53:29,654 INFO L225 Difference]: With dead ends: 50 [2019-11-28 16:53:29,654 INFO L226 Difference]: Without dead ends: 42 [2019-11-28 16:53:29,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-11-28 16:53:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-28 16:53:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2019-11-28 16:53:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 16:53:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2019-11-28 16:53:29,663 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 10 [2019-11-28 16:53:29,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:53:29,664 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-11-28 16:53:29,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 16:53:29,665 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2019-11-28 16:53:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 16:53:29,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:53:29,666 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:53:29,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:53:29,867 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:53:29,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:53:29,868 INFO L82 PathProgramCache]: Analyzing trace with hash 228797714, now seen corresponding path program 1 times [2019-11-28 16:53:29,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:53:29,870 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446475419] [2019-11-28 16:53:29,870 INFO L94 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 [2019-11-28 16:53:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:53:30,408 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 16:53:30,410 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:53:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:30,523 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:53:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:53:30,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446475419] [2019-11-28 16:53:30,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:53:30,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 10 [2019-11-28 16:53:30,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642467650] [2019-11-28 16:53:30,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 16:53:30,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:53:30,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 16:53:30,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:53:30,747 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 10 states. [2019-11-28 16:53:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:53:30,893 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2019-11-28 16:53:30,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 16:53:30,893 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2019-11-28 16:53:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:53:30,894 INFO L225 Difference]: With dead ends: 34 [2019-11-28 16:53:30,895 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:53:30,895 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:53:30,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:53:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:53:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:53:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:53:30,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-28 16:53:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:53:30,897 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:53:30,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 16:53:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:53:30,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:53:31,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:53:31,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:53:31,243 INFO L246 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2019-11-28 16:53:31,243 INFO L246 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2019-11-28 16:53:31,243 INFO L246 CegarLoopResult]: For program point L102(lines 102 106) no Hoare annotation was computed. [2019-11-28 16:53:31,243 INFO L246 CegarLoopResult]: For program point L102-1(lines 95 108) no Hoare annotation was computed. [2019-11-28 16:53:31,244 INFO L246 CegarLoopResult]: For program point L102-2(lines 102 106) no Hoare annotation was computed. [2019-11-28 16:53:31,244 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:53:31,244 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:53:31,244 INFO L246 CegarLoopResult]: For program point L53(lines 53 54) no Hoare annotation was computed. [2019-11-28 16:53:31,244 INFO L246 CegarLoopResult]: For program point L78(lines 78 81) no Hoare annotation was computed. [2019-11-28 16:53:31,244 INFO L246 CegarLoopResult]: For program point L70(lines 70 73) no Hoare annotation was computed. [2019-11-28 16:53:31,244 INFO L246 CegarLoopResult]: For program point L70-2(lines 58 73) no Hoare annotation was computed. [2019-11-28 16:53:31,245 INFO L246 CegarLoopResult]: For program point L120(lines 120 123) no Hoare annotation was computed. [2019-11-28 16:53:31,245 INFO L242 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)))) [2019-11-28 16:53:31,246 INFO L246 CegarLoopResult]: For program point L71(lines 71 72) no Hoare annotation was computed. [2019-11-28 16:53:31,246 INFO L246 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2019-11-28 16:53:31,246 INFO L246 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2019-11-28 16:53:31,246 INFO L246 CegarLoopResult]: For program point L97-1(lines 97 101) no Hoare annotation was computed. [2019-11-28 16:53:31,247 INFO L242 CegarLoopResult]: At program point L97-2(lines 97 101) the Hoare annotation is: false [2019-11-28 16:53:31,247 INFO L246 CegarLoopResult]: For program point L89(lines 89 93) no Hoare annotation was computed. [2019-11-28 16:53:31,247 INFO L246 CegarLoopResult]: For program point L89-1(lines 82 95) no Hoare annotation was computed. [2019-11-28 16:53:31,247 INFO L246 CegarLoopResult]: For program point L89-2(lines 89 93) no Hoare annotation was computed. [2019-11-28 16:53:31,248 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:53:31,248 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2019-11-28 16:53:31,248 INFO L246 CegarLoopResult]: For program point L82(lines 82 108) no Hoare annotation was computed. [2019-11-28 16:53:31,248 INFO L246 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2019-11-28 16:53:31,249 INFO L242 CegarLoopResult]: At program point L107(lines 36 109) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))) (= |ULTIMATE.start___ieee754_expf_#res| (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (fp.add roundNearestTiesToEven .cse0 .cse0)))) [2019-11-28 16:53:31,249 INFO L246 CegarLoopResult]: For program point L41-1(lines 41 45) no Hoare annotation was computed. [2019-11-28 16:53:31,249 INFO L242 CegarLoopResult]: At program point L41-2(lines 41 45) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start___ieee754_expf_~x (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2019-11-28 16:53:31,250 INFO L246 CegarLoopResult]: For program point L41-3(lines 41 45) no Hoare annotation was computed. [2019-11-28 16:53:31,250 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:53:31,250 INFO L246 CegarLoopResult]: For program point L58(lines 58 73) no Hoare annotation was computed. [2019-11-28 16:53:31,250 INFO L249 CegarLoopResult]: At program point L125(lines 111 126) the Hoare annotation is: true [2019-11-28 16:53:31,250 INFO L246 CegarLoopResult]: For program point L59(lines 59 68) no Hoare annotation was computed. [2019-11-28 16:53:31,251 INFO L246 CegarLoopResult]: For program point L59-2(lines 59 68) no Hoare annotation was computed. [2019-11-28 16:53:31,251 INFO L246 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2019-11-28 16:53:31,251 INFO L246 CegarLoopResult]: For program point L84-1(lines 84 88) no Hoare annotation was computed. [2019-11-28 16:53:31,251 INFO L242 CegarLoopResult]: At program point L84-2(lines 84 88) the Hoare annotation is: false [2019-11-28 16:53:31,283 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,285 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,285 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,286 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,287 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,288 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,289 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,289 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,290 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,290 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,290 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,291 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,291 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,292 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,292 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,292 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,293 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,293 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,294 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,294 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,294 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,295 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,295 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,296 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,296 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,296 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,296 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,297 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,297 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:53:31 BoogieIcfgContainer [2019-11-28 16:53:31,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:53:31,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:53:31,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:53:31,301 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:53:31,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:53:13" (3/4) ... [2019-11-28 16:53:31,305 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:53:31,318 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-11-28 16:53:31,319 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 16:53:31,319 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:53:31,357 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-28 16:53:31,360 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((1bv32 == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2019-11-28 16:53:31,445 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:53:31,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:53:31,451 INFO L168 Benchmark]: Toolchain (without parser) took 27209.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 959.0 MB in the beginning and 964.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 138.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:31,452 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:53:31,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -174.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:31,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:31,453 INFO L168 Benchmark]: Boogie Preprocessor took 53.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:31,454 INFO L168 Benchmark]: RCFGBuilder took 8419.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:31,454 INFO L168 Benchmark]: TraceAbstraction took 17986.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.7 MB in the end (delta: 121.2 MB). Peak memory consumption was 121.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:31,455 INFO L168 Benchmark]: Witness Printer took 148.25 ms. Allocated memory is still 1.2 GB. Free memory was 970.7 MB in the beginning and 964.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:53:31,457 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 541.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 959.0 MB in the beginning and 1.1 GB in the end (delta: -174.0 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 55.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 8419.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 17986.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.7 MB in the end (delta: 121.2 MB). Peak memory consumption was 121.2 MB. Max. memory is 11.5 GB. * Witness Printer took 148.25 ms. Allocated memory is still 1.2 GB. Free memory was 970.7 MB in the beginning and 964.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: 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: 97]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant [2019-11-28 16:53:31,471 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,472 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,472 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,472 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,473 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,473 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,473 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,474 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,474 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,474 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,475 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,485 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 41]: Loop Invariant [2019-11-28 16:53:31,486 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,487 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,487 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,487 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,488 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,488 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 13]: Loop Invariant [2019-11-28 16:53:31,489 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,489 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,489 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,489 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,490 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,490 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,491 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,491 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,491 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,491 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-11-28 16:53:31,492 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2019-11-28 16:53:31,492 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((1bv32 == \result && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(~roundNearestTiesToEven, ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()), ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Result: SAFE, OverallTime: 17.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 79 SDtfs, 82 SDslu, 151 SDs, 0 SdLazy, 80 SolverSat, 2 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 60 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 5 QuantifiedInterpolants, 3107 SizeOfPredicates, 15 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...