./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1052d_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: 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 /storage/repos/svcomp/c/float-newlib/float_req_bl_1052d_true-unreach-call.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 8314f0a25d0cae1024b24eed74020923c3a8036e ................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: 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 /storage/repos/svcomp/c/float-newlib/float_req_bl_1052d_true-unreach-call.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 8314f0a25d0cae1024b24eed74020923c3a8036e ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:03:41,866 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:03:41,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:03:41,880 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:03:41,881 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:03:41,882 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:03:41,884 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:03:41,886 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:03:41,888 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:03:41,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:03:41,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:03:41,891 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:03:41,892 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:03:41,893 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:03:41,895 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:03:41,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:03:41,897 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:03:41,899 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:03:41,902 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:03:41,904 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:03:41,905 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:03:41,910 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:03:41,913 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:03:41,916 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:03:41,918 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:03:41,919 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:03:41,920 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:03:41,926 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:03:41,927 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:03:41,929 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:03:41,929 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:03:41,933 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:03:41,933 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:03:41,934 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:03:41,938 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:03:41,939 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:03:41,939 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:03:41,968 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:03:41,968 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:03:41,969 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:03:41,969 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:03:41,970 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:03:41,970 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:03:41,970 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:03:41,970 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:03:41,971 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:03:41,972 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:03:41,972 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:03:41,972 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:03:41,972 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:03:41,972 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:03:41,972 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:03:41,973 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:03:41,973 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:03:41,973 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:03:41,973 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:03:41,973 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:03:41,973 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:03:41,975 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:03:41,975 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:03:41,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:41,976 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:03:41,976 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:03:41,976 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:03:41,976 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:03:41,976 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:03:41,976 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:03:41,978 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 8314f0a25d0cae1024b24eed74020923c3a8036e [2018-11-28 18:03:42,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:03:42,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:03:42,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:03:42,047 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:03:42,048 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:03:42,049 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1052d_true-unreach-call.c [2018-11-28 18:03:42,119 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03113b2a4/fd9ba1a47c5e4178828ad6d04ec7080b/FLAG8e7c04a3e [2018-11-28 18:03:42,638 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:03:42,642 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1052d_true-unreach-call.c [2018-11-28 18:03:42,650 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03113b2a4/fd9ba1a47c5e4178828ad6d04ec7080b/FLAG8e7c04a3e [2018-11-28 18:03:42,946 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03113b2a4/fd9ba1a47c5e4178828ad6d04ec7080b [2018-11-28 18:03:42,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:03:42,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:03:42,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:42,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:03:42,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:03:42,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:42" (1/1) ... [2018-11-28 18:03:42,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d20bde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:42, skipping insertion in model container [2018-11-28 18:03:42,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:42" (1/1) ... [2018-11-28 18:03:42,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:03:42,995 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:03:43,231 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:43,236 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:03:43,275 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:43,315 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:03:43,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43 WrapperNode [2018-11-28 18:03:43,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:43,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:43,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:03:43,317 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:03:43,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (1/1) ... [2018-11-28 18:03:43,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (1/1) ... [2018-11-28 18:03:43,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:43,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:03:43,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:03:43,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:03:43,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (1/1) ... [2018-11-28 18:03:43,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (1/1) ... [2018-11-28 18:03:43,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (1/1) ... [2018-11-28 18:03:43,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (1/1) ... [2018-11-28 18:03:43,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (1/1) ... [2018-11-28 18:03:43,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (1/1) ... [2018-11-28 18:03:43,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (1/1) ... [2018-11-28 18:03:43,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:03:43,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:03:43,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:03:43,393 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:03:43,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (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 [2018-11-28 18:03:43,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-28 18:03:43,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:03:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:03:43,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:03:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:03:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:03:43,542 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2018-11-28 18:03:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2018-11-28 18:03:43,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:03:43,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:03:43,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:03:43,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:03:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:03:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:03:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:03:43,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:03:44,138 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:03:44,138 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 18:03:44,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:44 BoogieIcfgContainer [2018-11-28 18:03:44,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:03:44,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:03:44,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:03:44,144 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:03:44,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:03:42" (1/3) ... [2018-11-28 18:03:44,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aabc452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:44, skipping insertion in model container [2018-11-28 18:03:44,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:43" (2/3) ... [2018-11-28 18:03:44,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aabc452 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:44, skipping insertion in model container [2018-11-28 18:03:44,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:44" (3/3) ... [2018-11-28 18:03:44,149 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d_true-unreach-call.c [2018-11-28 18:03:44,160 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:03:44,170 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:03:44,189 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:03:44,223 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:03:44,224 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:03:44,224 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:03:44,224 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:03:44,224 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:03:44,224 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:03:44,225 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:03:44,225 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:03:44,225 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:03:44,246 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 18:03:44,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 18:03:44,253 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:44,254 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:44,256 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:44,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:44,262 INFO L82 PathProgramCache]: Analyzing trace with hash -2053199230, now seen corresponding path program 1 times [2018-11-28 18:03:44,264 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:03:44,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:03:44,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:44,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:44,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:44,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:44,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:03:44,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:03:44,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:03:44,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:44,427 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 18:03:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:44,451 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-11-28 18:03:44,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:03:44,453 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-28 18:03:44,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:44,463 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:03:44,463 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:03:44,467 INFO L631 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 [2018-11-28 18:03:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:03:44,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 18:03:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 18:03:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-11-28 18:03:44,508 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-11-28 18:03:44,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:44,509 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-11-28 18:03:44,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:03:44,509 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-11-28 18:03:44,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 18:03:44,510 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:44,511 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:44,511 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:44,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:44,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2027240245, now seen corresponding path program 1 times [2018-11-28 18:03:44,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:03:44,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:03:44,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:44,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:44,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:03:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:03:44,634 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:03:44,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:03:44 BoogieIcfgContainer [2018-11-28 18:03:44,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:03:44,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:03:44,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:03:44,669 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:03:44,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:44" (3/4) ... [2018-11-28 18:03:44,673 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:03:44,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:03:44,674 INFO L168 Benchmark]: Toolchain (without parser) took 1724.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -124.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:44,676 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:44,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.01 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:44,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.15 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:44,678 INFO L168 Benchmark]: Boogie Preprocessor took 42.50 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:44,680 INFO L168 Benchmark]: RCFGBuilder took 746.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:44,681 INFO L168 Benchmark]: TraceAbstraction took 528.59 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:44,682 INFO L168 Benchmark]: Witness Printer took 4.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:44,687 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 364.01 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.15 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.50 ms. Allocated memory is still 1.0 GB. Free memory was 937.9 MB in the beginning and 932.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 746.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 932.6 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 528.59 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: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=6442450947, huge_floor=1000000000000000000000000000000] [L75] float x = 0.0f; VAL [huge_floor=1000000000000000000000000000000, x=0] [L76] CALL, EXPR floor_float(x) VAL [\old(x)=0, huge_floor=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, x=0] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=0] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=0] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=0, huge_floor=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=0] [L76] RET, EXPR floor_float(x) VAL [floor_float(x)=6442450946, huge_floor=1000000000000000000000000000000, x=0] [L76] float res = floor_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [huge_floor=1000000000000000000000000000000, res=6442450946, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=6442450946, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 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=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.24-91b1670 [2018-11-28 18:03:47,116 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:03:47,118 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:03:47,132 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:03:47,132 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:03:47,133 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:03:47,135 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:03:47,137 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:03:47,139 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:03:47,140 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:03:47,141 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:03:47,141 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:03:47,143 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:03:47,144 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:03:47,145 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:03:47,146 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:03:47,147 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:03:47,149 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:03:47,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:03:47,153 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:03:47,155 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:03:47,156 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:03:47,159 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:03:47,159 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:03:47,159 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:03:47,160 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:03:47,162 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:03:47,163 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:03:47,163 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:03:47,165 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:03:47,165 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:03:47,167 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:03:47,167 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:03:47,167 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:03:47,168 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:03:47,169 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:03:47,169 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:03:47,195 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:03:47,196 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:03:47,197 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:03:47,197 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:03:47,198 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:03:47,198 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:03:47,198 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:03:47,198 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:03:47,199 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:03:47,200 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:03:47,201 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:03:47,201 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:03:47,201 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:03:47,201 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:03:47,201 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:03:47,202 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:03:47,202 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:03:47,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:03:47,203 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:03:47,203 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:03:47,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:03:47,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:03:47,203 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:03:47,206 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:03:47,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:47,206 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:03:47,207 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:03:47,207 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:03:47,207 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:03:47,208 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:03:47,208 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:03:47,208 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:03:47,208 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 8314f0a25d0cae1024b24eed74020923c3a8036e [2018-11-28 18:03:47,264 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:03:47,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:03:47,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:03:47,284 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:03:47,284 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:03:47,285 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1052d_true-unreach-call.c [2018-11-28 18:03:47,337 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740575465/77b9269f52f5439fb0b4b49af9139b81/FLAG18edbb923 [2018-11-28 18:03:47,855 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:03:47,856 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1052d_true-unreach-call.c [2018-11-28 18:03:47,864 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740575465/77b9269f52f5439fb0b4b49af9139b81/FLAG18edbb923 [2018-11-28 18:03:48,171 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/740575465/77b9269f52f5439fb0b4b49af9139b81 [2018-11-28 18:03:48,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:03:48,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:03:48,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:48,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:03:48,183 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:03:48,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f35d861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48, skipping insertion in model container [2018-11-28 18:03:48,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:03:48,234 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:03:48,499 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:48,511 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:03:48,553 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:48,591 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:03:48,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48 WrapperNode [2018-11-28 18:03:48,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:48,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:48,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:03:48,593 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:03:48,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:48,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:03:48,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:03:48,639 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:03:48,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (1/1) ... [2018-11-28 18:03:48,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:03:48,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:03:48,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:03:48,722 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:03:48,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (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 [2018-11-28 18:03:48,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:03:48,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:03:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:03:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:03:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2018-11-28 18:03:48,860 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2018-11-28 18:03:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:03:48,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:03:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:03:48,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:03:48,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:03:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-28 18:03:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:03:48,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:03:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 18:03:48,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:03:49,107 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:03:49,734 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:03:49,751 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:03:49,752 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 18:03:49,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:49 BoogieIcfgContainer [2018-11-28 18:03:49,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:03:49,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:03:49,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:03:49,757 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:03:49,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:03:48" (1/3) ... [2018-11-28 18:03:49,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291c611c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:49, skipping insertion in model container [2018-11-28 18:03:49,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:48" (2/3) ... [2018-11-28 18:03:49,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@291c611c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:49, skipping insertion in model container [2018-11-28 18:03:49,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:49" (3/3) ... [2018-11-28 18:03:49,762 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d_true-unreach-call.c [2018-11-28 18:03:49,773 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:03:49,780 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:03:49,797 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:03:49,829 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:03:49,830 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:03:49,830 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:03:49,830 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:03:49,830 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:03:49,831 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:03:49,831 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:03:49,831 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:03:49,831 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:03:49,849 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 18:03:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 18:03:49,855 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:49,856 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:49,858 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:49,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:49,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2053199230, now seen corresponding path program 1 times [2018-11-28 18:03:49,869 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:49,869 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:03:49,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:49,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:49,971 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:49,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:49,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:03:49,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:03:49,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:03:50,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:50,002 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 18:03:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:50,030 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-11-28 18:03:50,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:03:50,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-28 18:03:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:50,043 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:03:50,043 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:03:50,047 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:50,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:03:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 18:03:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 18:03:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-11-28 18:03:50,093 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-11-28 18:03:50,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:50,093 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-11-28 18:03:50,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:03:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-11-28 18:03:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 18:03:50,095 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:50,095 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:50,095 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:50,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:50,096 INFO L82 PathProgramCache]: Analyzing trace with hash 2027240245, now seen corresponding path program 1 times [2018-11-28 18:03:50,096 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:50,096 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:03:50,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:50,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:50,629 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:50,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:50,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:03:50,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:03:50,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:03:50,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:03:50,646 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 7 states. [2018-11-28 18:03:51,146 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-28 18:03:52,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:52,462 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-11-28 18:03:52,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 18:03:52,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-28 18:03:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:52,467 INFO L225 Difference]: With dead ends: 60 [2018-11-28 18:03:52,467 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:03:52,469 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:03:52,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:03:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-11-28 18:03:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 18:03:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-11-28 18:03:52,478 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-11-28 18:03:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:52,479 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-11-28 18:03:52,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:03:52,479 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-11-28 18:03:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:03:52,480 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:52,480 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:52,481 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:52,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:52,481 INFO L82 PathProgramCache]: Analyzing trace with hash -568234905, now seen corresponding path program 1 times [2018-11-28 18:03:52,482 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:52,482 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-11-28 18:03:52,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:52,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:52,653 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:52,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:52,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:03:52,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:03:52,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:03:52,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:03:52,664 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2018-11-28 18:03:54,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:54,278 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-11-28 18:03:54,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:03:54,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-28 18:03:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:54,282 INFO L225 Difference]: With dead ends: 67 [2018-11-28 18:03:54,282 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:03:54,283 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:03:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:03:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-11-28 18:03:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:03:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-11-28 18:03:54,290 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2018-11-28 18:03:54,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:54,291 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-11-28 18:03:54,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:03:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-11-28 18:03:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:03:54,292 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:54,293 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:54,293 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:54,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:54,293 INFO L82 PathProgramCache]: Analyzing trace with hash 13684055, now seen corresponding path program 1 times [2018-11-28 18:03:54,295 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:54,296 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:03:54,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 18:03:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:54,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:55,578 WARN L180 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 18:03:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:55,584 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:55,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:55,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:03:55,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:03:55,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:03:55,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:03:55,606 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2018-11-28 18:03:56,916 WARN L180 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 18:03:57,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:57,820 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-11-28 18:03:57,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:03:57,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-28 18:03:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:57,827 INFO L225 Difference]: With dead ends: 52 [2018-11-28 18:03:57,827 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 18:03:57,828 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:03:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 18:03:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 18:03:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:03:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-11-28 18:03:57,835 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2018-11-28 18:03:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:57,835 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-11-28 18:03:57,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:03:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-11-28 18:03:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 18:03:57,836 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:57,836 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:57,837 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:57,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:57,837 INFO L82 PathProgramCache]: Analyzing trace with hash 2137668883, now seen corresponding path program 1 times [2018-11-28 18:03:57,838 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:57,838 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 18:03:57,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:57,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:58,004 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:58,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:58,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:03:58,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:03:58,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:03:58,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:03:58,017 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 7 states. [2018-11-28 18:03:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:58,267 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-11-28 18:03:58,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:03:58,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-28 18:03:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:58,269 INFO L225 Difference]: With dead ends: 44 [2018-11-28 18:03:58,269 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:03:58,270 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:03:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:03:58,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:03:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:03:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-11-28 18:03:58,277 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 24 [2018-11-28 18:03:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:58,277 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-11-28 18:03:58,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:03:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-11-28 18:03:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:03:58,278 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:58,278 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:58,279 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:58,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:58,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1389654977, now seen corresponding path program 1 times [2018-11-28 18:03:58,279 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:58,279 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 18:03:58,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:58,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:58,484 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:58,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:58,494 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:03:58,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:03:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:03:58,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:03:58,495 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 6 states. [2018-11-28 18:03:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:58,891 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-11-28 18:03:58,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:03:58,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-28 18:03:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:58,894 INFO L225 Difference]: With dead ends: 57 [2018-11-28 18:03:58,894 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 18:03:58,894 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:03:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 18:03:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 18:03:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 18:03:58,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2018-11-28 18:03:58,900 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 25 [2018-11-28 18:03:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:58,900 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2018-11-28 18:03:58,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:03:58,900 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2018-11-28 18:03:58,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:03:58,901 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:58,901 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:58,902 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:58,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:58,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1598134754, now seen corresponding path program 1 times [2018-11-28 18:03:58,902 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:58,902 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 18:03:58,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:59,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:59,275 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:59,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:59,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:03:59,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:03:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:03:59,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:03:59,290 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand 12 states. [2018-11-28 18:03:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:59,727 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2018-11-28 18:03:59,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:03:59,729 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-11-28 18:03:59,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:59,730 INFO L225 Difference]: With dead ends: 33 [2018-11-28 18:03:59,730 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:03:59,731 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2018-11-28 18:03:59,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:03:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:03:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:03:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:03:59,733 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-11-28 18:03:59,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:59,734 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:03:59,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:03:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:03:59,734 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:03:59,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:03:59,926 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-11-28 18:04:00,085 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:04:00,085 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:04:00,085 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:04:00,086 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 47) no Hoare annotation was computed. [2018-11-28 18:04:00,086 INFO L448 ceAbstractionStarter]: For program point L48(lines 48 52) no Hoare annotation was computed. [2018-11-28 18:04:00,086 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2018-11-28 18:04:00,086 INFO L448 ceAbstractionStarter]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2018-11-28 18:04:00,086 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-11-28 18:04:00,086 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-28 18:04:00,086 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 41) no Hoare annotation was computed. [2018-11-28 18:04:00,086 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-28 18:04:00,086 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0)) (= |floor_float_#in~x| floor_float_~x)) [2018-11-28 18:04:00,087 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-11-28 18:04:00,087 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2018-11-28 18:04:00,087 INFO L448 ceAbstractionStarter]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2018-11-28 18:04:00,087 INFO L448 ceAbstractionStarter]: For program point floor_floatEXIT(lines 13 54) no Hoare annotation was computed. [2018-11-28 18:04:00,087 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-11-28 18:04:00,087 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2018-11-28 18:04:00,087 INFO L448 ceAbstractionStarter]: For program point floor_floatFINAL(lines 13 54) no Hoare annotation was computed. [2018-11-28 18:04:00,087 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 30) no Hoare annotation was computed. [2018-11-28 18:04:00,087 INFO L451 ceAbstractionStarter]: At program point floor_floatENTRY(lines 13 54) the Hoare annotation is: true [2018-11-28 18:04:00,088 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 46) no Hoare annotation was computed. [2018-11-28 18:04:00,088 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:04:00,088 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0) [2018-11-28 18:04:00,088 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:04:00,088 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:04:00,088 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 68 85) the Hoare annotation is: true [2018-11-28 18:04:00,088 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-11-28 18:04:00,089 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 68 85) no Hoare annotation was computed. [2018-11-28 18:04:00,089 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-28 18:04:00,089 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-28 18:04:00,089 INFO L444 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0)) (and |main_#t~short8| (= (_ +zero 8 24) main_~x~0) (= (fp (_ bv0 1) (_ bv0 8) (_ bv0 23)) main_~res~0))) [2018-11-28 18:04:00,089 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-11-28 18:04:00,089 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 68 85) no Hoare annotation was computed. [2018-11-28 18:04:00,090 INFO L444 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0)) (= (_ +zero 8 24) main_~x~0)) [2018-11-28 18:04:00,090 INFO L448 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-11-28 18:04:00,090 INFO L448 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-11-28 18:04:00,090 INFO L448 ceAbstractionStarter]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2018-11-28 18:04:00,090 INFO L444 ceAbstractionStarter]: At program point L59-2(lines 59 63) the Hoare annotation is: (or (= |__signbit_float_#in~x| __signbit_float_~x) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_floor~0))) [2018-11-28 18:04:00,090 INFO L448 ceAbstractionStarter]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2018-11-28 18:04:00,090 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 56 66) no Hoare annotation was computed. [2018-11-28 18:04:00,091 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 56 66) the Hoare annotation is: true [2018-11-28 18:04:00,091 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 56 66) no Hoare annotation was computed. [2018-11-28 18:04:00,101 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,102 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,106 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,107 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,108 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,108 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,108 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,109 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:04:00 BoogieIcfgContainer [2018-11-28 18:04:00,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:04:00,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:04:00,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:04:00,112 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:04:00,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:49" (3/4) ... [2018-11-28 18:04:00,116 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:04:00,123 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:04:00,123 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure floor_float [2018-11-28 18:04:00,124 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:04:00,124 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-11-28 18:04:00,129 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-11-28 18:04:00,130 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-28 18:04:00,130 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:04:00,157 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) || \old(x) == x [2018-11-28 18:04:00,157 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) [2018-11-28 18:04:00,201 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:04:00,202 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:04:00,203 INFO L168 Benchmark]: Toolchain (without parser) took 12027.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 943.3 MB in the beginning and 841.4 MB in the end (delta: 101.9 MB). Peak memory consumption was 235.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:00,204 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:00,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.69 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:00,205 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.32 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:00,206 INFO L168 Benchmark]: Boogie Preprocessor took 83.73 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:00,207 INFO L168 Benchmark]: RCFGBuilder took 1031.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:00,208 INFO L168 Benchmark]: TraceAbstraction took 10357.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 848.1 MB in the end (delta: 254.4 MB). Peak memory consumption was 254.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:00,209 INFO L168 Benchmark]: Witness Printer took 90.51 ms. Allocated memory is still 1.2 GB. Free memory was 848.1 MB in the beginning and 841.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:00,214 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 414.69 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.32 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.73 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1031.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 13.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10357.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 848.1 MB in the end (delta: 254.4 MB). Peak memory consumption was 254.4 MB. Max. memory is 11.5 GB. * Witness Printer took 90.51 ms. Allocated memory is still 1.2 GB. Free memory was 848.1 MB in the beginning and 841.4 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 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant [2018-11-28 18:04:00,230 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,230 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,230 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,237 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) - InvariantResult [Line: 16]: Loop Invariant [2018-11-28 18:04:00,238 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,239 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,239 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:00,239 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_floor) || \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. SAFE Result, 10.2s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 6.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 229 SDtfs, 226 SDslu, 728 SDs, 0 SdLazy, 330 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 20 PreInvPairs, 23 NumberOfFragments, 68 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 154 ConstructedInterpolants, 17 QuantifiedInterpolants, 19826 SizeOfPredicates, 25 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...