/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0831_true-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0831_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 14218179970cdda4c2f749c75b7f78aa74dcc86b --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0831_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 14218179970cdda4c2f749c75b7f78aa74dcc86b --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:26:57,908 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:26:57,910 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:26:57,924 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:26:57,924 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:26:57,926 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:26:57,927 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:26:57,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:26:57,931 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:26:57,932 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:26:57,933 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:26:57,933 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:26:57,934 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:26:57,935 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:26:57,937 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:26:57,938 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:26:57,939 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:26:57,941 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:26:57,943 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:26:57,945 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:26:57,946 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:26:57,948 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:26:57,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:26:57,951 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:26:57,951 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:26:57,952 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:26:57,954 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:26:57,955 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:26:57,956 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:26:57,957 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:26:57,957 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:26:57,958 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:26:57,959 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:26:57,959 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:26:57,960 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:26:57,961 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:26:57,961 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:26:57,985 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:26:57,986 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:26:57,987 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:26:57,987 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:26:57,987 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:26:57,988 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:26:57,988 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:26:57,988 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:26:57,988 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:26:57,988 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:26:57,989 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:26:57,989 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:26:57,989 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:26:57,989 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:26:57,989 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:26:57,990 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:26:57,990 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:26:57,990 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:26:57,990 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:26:57,990 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:26:57,990 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:26:57,991 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:26:57,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:26:57,991 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:26:57,991 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:26:57,991 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:26:57,992 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:26:57,992 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:26:57,992 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:26:57,992 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 -> 14218179970cdda4c2f749c75b7f78aa74dcc86b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:26:58,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:26:58,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:26:58,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:26:58,083 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:26:58,084 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:26:58,085 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0831_true-unreach-call.c [2018-09-21 18:26:58,449 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c18a24d0/0e000f4d676e4d9db5f1a247d272d6bb/FLAGf64c0a4be [2018-09-21 18:26:58,617 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:26:58,618 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0831_true-unreach-call.c [2018-09-21 18:26:58,627 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c18a24d0/0e000f4d676e4d9db5f1a247d272d6bb/FLAGf64c0a4be [2018-09-21 18:26:58,643 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c18a24d0/0e000f4d676e4d9db5f1a247d272d6bb [2018-09-21 18:26:58,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:26:58,650 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:26:58,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:26:58,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:26:58,659 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:26:58,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:26:58" (1/1) ... [2018-09-21 18:26:58,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3183e931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:58, skipping insertion in model container [2018-09-21 18:26:58,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:26:58" (1/1) ... [2018-09-21 18:26:58,677 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:26:58,928 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:26:58,948 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:26:58,973 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:26:59,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59 WrapperNode [2018-09-21 18:26:59,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:26:59,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:26:59,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:26:59,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:26:59,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59" (1/1) ... [2018-09-21 18:26:59,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59" (1/1) ... [2018-09-21 18:26:59,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59" (1/1) ... [2018-09-21 18:26:59,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59" (1/1) ... [2018-09-21 18:26:59,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59" (1/1) ... [2018-09-21 18:26:59,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59" (1/1) ... [2018-09-21 18:26:59,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59" (1/1) ... [2018-09-21 18:26:59,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:26:59,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:26:59,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:26:59,085 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:26:59,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:26:59,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:26:59,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:26:59,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:26:59,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_expf [2018-09-21 18:26:59,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:26:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:26:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:26:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:26:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_expf [2018-09-21 18:26:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:26:59,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:26:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:26:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:26:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:26:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:26:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:26:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:26:59,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:26:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:26:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:26:59,971 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:26:59,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:26:59 BoogieIcfgContainer [2018-09-21 18:26:59,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:26:59,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:26:59,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:26:59,977 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:26:59,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:26:58" (1/3) ... [2018-09-21 18:26:59,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607542f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:26:59, skipping insertion in model container [2018-09-21 18:26:59,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:26:59" (2/3) ... [2018-09-21 18:26:59,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607542f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:26:59, skipping insertion in model container [2018-09-21 18:26:59,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:26:59" (3/3) ... [2018-09-21 18:26:59,981 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831_true-unreach-call.c [2018-09-21 18:26:59,989 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:26:59,997 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:27:00,034 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:27:00,035 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:27:00,035 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:27:00,035 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:27:00,036 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:27:00,036 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:27:00,036 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:27:00,036 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:27:00,036 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:27:00,056 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2018-09-21 18:27:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:27:00,068 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:27:00,070 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:27:00,073 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:27:00,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2012617380, now seen corresponding path program 1 times [2018-09-21 18:27:00,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:27:00,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:27:00,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:27:00,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:27:00,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:27:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:27:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:27:00,277 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:27:00,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:27:00,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:27:00,294 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:27:00,295 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:27:00,298 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2018-09-21 18:27:00,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:27:00,324 INFO L93 Difference]: Finished difference Result 90 states and 100 transitions. [2018-09-21 18:27:00,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:27:00,325 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:27:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:27:00,339 INFO L225 Difference]: With dead ends: 90 [2018-09-21 18:27:00,339 INFO L226 Difference]: Without dead ends: 86 [2018-09-21 18:27:00,341 INFO L606 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 [2018-09-21 18:27:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-09-21 18:27:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-09-21 18:27:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-09-21 18:27:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2018-09-21 18:27:00,390 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 21 [2018-09-21 18:27:00,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:27:00,390 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2018-09-21 18:27:00,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:27:00,390 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2018-09-21 18:27:00,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:27:00,392 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:27:00,392 INFO L376 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] [2018-09-21 18:27:00,392 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:27:00,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1520219498, now seen corresponding path program 1 times [2018-09-21 18:27:00,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:27:00,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:27:00,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:27:00,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:27:00,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:27:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:27:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:27:00,554 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:27:00,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:27:00 BoogieIcfgContainer [2018-09-21 18:27:00,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:27:00,624 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:27:00,624 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:27:00,624 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:27:00,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:26:59" (3/4) ... [2018-09-21 18:27:00,630 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:27:00,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:27:00,632 INFO L168 Benchmark]: Toolchain (without parser) took 1984.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -118.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:27:00,634 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:27:00,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.10 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 937.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:27:00,637 INFO L168 Benchmark]: Boogie Preprocessor took 71.02 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:27:00,637 INFO L168 Benchmark]: RCFGBuilder took 888.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:27:00,638 INFO L168 Benchmark]: TraceAbstraction took 649.76 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:27:00,640 INFO L168 Benchmark]: Witness Printer took 6.01 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. [2018-09-21 18:27:00,646 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 360.10 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 937.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 71.02 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 888.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -163.6 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 649.76 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: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * Witness Printer took 6.01 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: 121]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of bitwiseAnd at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 50. Possible FailurePath: [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L15-L34] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [\old(huge_exp)=6442450947, \old(invln2_exp)=6442450949, \old(one_exp)=6442450962, \old(P1_exp)=6442450952, \old(P2_exp)=6442450954, \old(P3_exp)=6442450957, \old(P4_exp)=6442450960, \old(P5_exp)=6442450959, \old(twom100_exp)=6442450945, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L116] float x = 0.0f / 0.0f; VAL [huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L117] CALL, EXPR __ieee754_expf(x) VAL [\old(x)=6442450951, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L37] float y, hi, lo, c, t; [L38] __int32_t k = 0, xsb, sx; [L38] __int32_t k = 0, xsb, sx; [L39] __uint32_t hx; VAL [\old(x)=6442450951, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L42] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=6442450951, gf_u={6442450958:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L43] FCALL gf_u.value = (x) VAL [\old(x)=6442450951, gf_u={6442450958:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L44] EXPR, FCALL gf_u.word VAL [\old(x)=6442450951, gf_u={6442450958:0}, gf_u.word=6442450944, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L44] (sx) = gf_u.word VAL [\old(x)=6442450951, gf_u={6442450958:0}, gf_u.word=6442450944, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, sx=-2147483648, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L44] FCALL (sx) = gf_u.word VAL [(sx) = gf_u.word=6442450961, \old(x)=6442450951, gf_u={6442450958:0}, gf_u.word=6442450944, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, sx=-2147483648, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L45] COND FALSE !(0) VAL [\old(x)=6442450951, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, sx=-2147483648, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L46] xsb = (sx >> 31) & 1 [L47] hx = sx & 0x7fffffff VAL [\old(x)=6442450951, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, sx=-2147483648, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L49] COND TRUE ((hx) > 0x7f800000L) [L50] RET return x + x; VAL [\old(x)=6442450951, huge_exp=1000000000000000000000000000000, hx=2139095041, invln2_exp=1803368777/1250000000, k=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, sx=-2147483648, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L117] EXPR __ieee754_expf(x) VAL [__ieee754_expf(x)=6442450950, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L117] float res = __ieee754_expf(x); [L120] CALL, EXPR isnan_float(res) VAL [\old(x)=6442450950, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L13] RET return x != x; VAL [\old(x)=6442450950, \result=0, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450950] [L120] EXPR isnan_float(res) VAL [huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, isnan_float(res)=0, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, res=6442450950, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] [L120] COND TRUE !isnan_float(res) [L121] __VERIFIER_error() VAL [huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, res=6442450950, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=6442450951] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 90 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 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=90occurred 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, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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 0.1.23-5eb3fea [2018-09-21 18:27:03,023 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:27:03,025 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:27:03,040 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:27:03,042 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:27:03,044 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:27:03,045 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:27:03,047 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:27:03,049 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:27:03,050 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:27:03,051 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:27:03,052 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:27:03,053 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:27:03,054 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:27:03,055 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:27:03,056 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:27:03,057 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:27:03,059 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:27:03,062 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:27:03,063 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:27:03,065 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:27:03,066 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:27:03,069 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:27:03,069 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:27:03,070 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:27:03,071 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:27:03,072 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:27:03,073 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:27:03,074 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:27:03,075 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:27:03,076 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:27:03,076 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:27:03,077 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:27:03,077 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:27:03,079 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:27:03,079 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:27:03,080 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:27:03,097 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:27:03,098 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:27:03,099 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:27:03,099 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:27:03,100 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:27:03,100 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:27:03,100 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:27:03,100 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:27:03,100 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:27:03,101 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:27:03,101 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:27:03,101 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:27:03,101 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:27:03,101 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:27:03,101 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:27:03,102 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:27:03,102 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:27:03,102 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:27:03,102 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:27:03,104 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:27:03,104 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:27:03,105 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:27:03,105 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:27:03,105 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:27:03,105 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:27:03,105 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:27:03,106 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:27:03,106 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:27:03,107 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:27:03,107 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:27:03,107 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:27:03,107 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 -> 14218179970cdda4c2f749c75b7f78aa74dcc86b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:27:03,159 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:27:03,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:27:03,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:27:03,189 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:27:03,189 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:27:03,190 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0831_true-unreach-call.c [2018-09-21 18:27:03,560 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a611110b/c7884dcbbc07477fbc0e1f59927024db/FLAGa62631553 [2018-09-21 18:27:03,735 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:27:03,736 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0831_true-unreach-call.c [2018-09-21 18:27:03,745 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a611110b/c7884dcbbc07477fbc0e1f59927024db/FLAGa62631553 [2018-09-21 18:27:03,764 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a611110b/c7884dcbbc07477fbc0e1f59927024db [2018-09-21 18:27:03,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:27:03,772 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:27:03,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:27:03,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:27:03,782 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:27:03,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:27:03" (1/1) ... [2018-09-21 18:27:03,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ccc03c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:03, skipping insertion in model container [2018-09-21 18:27:03,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:27:03" (1/1) ... [2018-09-21 18:27:03,798 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:27:04,087 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:27:04,111 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:27:04,142 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:27:04,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04 WrapperNode [2018-09-21 18:27:04,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:27:04,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:27:04,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:27:04,185 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:27:04,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04" (1/1) ... [2018-09-21 18:27:04,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04" (1/1) ... [2018-09-21 18:27:04,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04" (1/1) ... [2018-09-21 18:27:04,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04" (1/1) ... [2018-09-21 18:27:04,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04" (1/1) ... [2018-09-21 18:27:04,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04" (1/1) ... [2018-09-21 18:27:04,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04" (1/1) ... [2018-09-21 18:27:04,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:27:04,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:27:04,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:27:04,282 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:27:04,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:27:04,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:27:04,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:27:04,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:27:04,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_expf [2018-09-21 18:27:04,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:27:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:27:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:27:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:27:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_expf [2018-09-21 18:27:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:27:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:27:04,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:27:04,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:27:04,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:27:04,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:27:04,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:27:04,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:27:04,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:27:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:27:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:27:04,717 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:27:04,782 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:27:13,866 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:27:13,881 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:27:13,996 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:27:14,007 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:27:15,284 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:27:15,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:27:15 BoogieIcfgContainer [2018-09-21 18:27:15,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:27:15,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:27:15,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:27:15,290 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:27:15,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:27:03" (1/3) ... [2018-09-21 18:27:15,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56199067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:27:15, skipping insertion in model container [2018-09-21 18:27:15,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:27:04" (2/3) ... [2018-09-21 18:27:15,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56199067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:27:15, skipping insertion in model container [2018-09-21 18:27:15,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:27:15" (3/3) ... [2018-09-21 18:27:15,295 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0831_true-unreach-call.c [2018-09-21 18:27:15,305 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:27:15,315 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:27:15,358 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:27:15,359 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:27:15,360 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:27:15,360 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:27:15,360 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:27:15,360 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:27:15,360 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:27:15,360 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:27:15,361 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:27:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2018-09-21 18:27:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-21 18:27:15,397 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:27:15,399 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:27:15,402 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:27:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash 907118703, now seen corresponding path program 1 times [2018-09-21 18:27:15,411 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:27:15,412 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 [2018-09-21 18:27:15,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:27:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:27:15,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:27:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:27:15,548 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:27:15,566 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:27:15,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:27:15,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:27:15,588 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:27:15,588 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:27:15,591 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2018-09-21 18:27:15,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:27:15,617 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2018-09-21 18:27:15,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:27:15,618 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-09-21 18:27:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:27:15,633 INFO L225 Difference]: With dead ends: 89 [2018-09-21 18:27:15,633 INFO L226 Difference]: Without dead ends: 85 [2018-09-21 18:27:15,635 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:27:15,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-21 18:27:15,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-21 18:27:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-21 18:27:15,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2018-09-21 18:27:15,688 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 20 [2018-09-21 18:27:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:27:15,688 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2018-09-21 18:27:15,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:27:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2018-09-21 18:27:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-21 18:27:15,693 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:27:15,693 INFO L376 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] [2018-09-21 18:27:15,693 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:27:15,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2013527473, now seen corresponding path program 1 times [2018-09-21 18:27:15,696 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:27:15,697 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) [2018-09-21 18:27:15,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:27:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:27:15,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:27:16,544 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-21 18:27:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:27:16,655 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:27:16,667 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:27:16,667 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:27:16,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:27:16,669 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:27:16,670 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:27:16,670 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 9 states. [2018-09-21 18:27:17,409 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-21 18:27:31,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:27:31,948 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2018-09-21 18:27:31,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:27:31,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-09-21 18:27:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:27:31,955 INFO L225 Difference]: With dead ends: 94 [2018-09-21 18:27:31,955 INFO L226 Difference]: Without dead ends: 89 [2018-09-21 18:27:31,957 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:27:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-21 18:27:31,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2018-09-21 18:27:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-21 18:27:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2018-09-21 18:27:31,972 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 29 [2018-09-21 18:27:31,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:27:31,972 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2018-09-21 18:27:31,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:27:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2018-09-21 18:27:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:27:31,974 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:27:31,975 INFO L376 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] [2018-09-21 18:27:31,975 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:27:31,975 INFO L82 PathProgramCache]: Analyzing trace with hash -272013875, now seen corresponding path program 1 times [2018-09-21 18:27:31,976 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:27:31,977 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 [2018-09-21 18:27:31,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:27:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:27:32,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:27:32,178 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:27:32,195 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:27:32,195 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:27:32,200 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:32,220 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:32,221 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:27:32,279 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:27:32,285 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:27:32,286 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:27:32,289 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:32,291 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:32,292 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:27:32,525 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-21 18:27:32,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:27:32,642 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:27:32,659 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:27:32,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-21 18:27:32,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-21 18:27:32,660 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-21 18:27:32,661 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-09-21 18:27:32,662 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 11 states. [2018-09-21 18:27:33,544 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-09-21 18:27:33,974 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-09-21 18:27:43,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:27:43,222 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2018-09-21 18:27:43,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-21 18:27:43,223 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2018-09-21 18:27:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:27:43,226 INFO L225 Difference]: With dead ends: 94 [2018-09-21 18:27:43,226 INFO L226 Difference]: Without dead ends: 86 [2018-09-21 18:27:43,227 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2018-09-21 18:27:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-09-21 18:27:43,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2018-09-21 18:27:43,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-21 18:27:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2018-09-21 18:27:43,237 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 31 [2018-09-21 18:27:43,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:27:43,237 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2018-09-21 18:27:43,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-21 18:27:43,238 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2018-09-21 18:27:43,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-21 18:27:43,240 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:27:43,240 INFO L376 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, 1, 1, 1, 1] [2018-09-21 18:27:43,241 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:27:43,241 INFO L82 PathProgramCache]: Analyzing trace with hash 387576925, now seen corresponding path program 1 times [2018-09-21 18:27:43,241 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:27:43,242 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) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:27:43,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:27:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:27:44,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:27:44,151 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:27:44,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:27:44,156 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:27:44,161 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:44,172 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:44,172 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:27:44,203 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:27:44,211 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:27:44,212 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:27:44,215 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:44,218 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:44,219 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:27:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:27:44,401 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:27:44,421 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:27:44,421 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:27:44,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:27:44,422 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:27:44,422 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:27:44,422 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 9 states. [2018-09-21 18:27:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:27:56,379 INFO L93 Difference]: Finished difference Result 132 states and 137 transitions. [2018-09-21 18:27:56,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-21 18:27:56,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-09-21 18:27:56,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:27:56,381 INFO L225 Difference]: With dead ends: 132 [2018-09-21 18:27:56,382 INFO L226 Difference]: Without dead ends: 83 [2018-09-21 18:27:56,382 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:27:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-21 18:27:56,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2018-09-21 18:27:56,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-21 18:27:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-09-21 18:27:56,392 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 36 [2018-09-21 18:27:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:27:56,392 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-09-21 18:27:56,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:27:56,393 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-09-21 18:27:56,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-21 18:27:56,395 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:27:56,395 INFO L376 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, 1, 1, 1, 1, 1] [2018-09-21 18:27:56,395 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:27:56,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2066044958, now seen corresponding path program 1 times [2018-09-21 18:27:56,396 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:27:56,396 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 [2018-09-21 18:27:56,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:27:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:27:57,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:27:57,323 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:27:57,329 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:27:57,329 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:27:57,336 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:57,348 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:57,348 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:27:57,367 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:27:57,374 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:27:57,374 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:27:57,377 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:57,381 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:27:57,381 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:27:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:27:57,519 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:27:57,540 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:27:57,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:27:57,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:27:57,541 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:27:57,541 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:27:57,541 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 9 states. [2018-09-21 18:28:13,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:28:13,811 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2018-09-21 18:28:13,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:28:13,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-09-21 18:28:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:28:13,814 INFO L225 Difference]: With dead ends: 129 [2018-09-21 18:28:13,814 INFO L226 Difference]: Without dead ends: 81 [2018-09-21 18:28:13,815 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:28:13,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-21 18:28:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-21 18:28:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-21 18:28:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-09-21 18:28:13,823 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 37 [2018-09-21 18:28:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:28:13,824 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-09-21 18:28:13,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:28:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-09-21 18:28:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-21 18:28:13,826 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:28:13,826 INFO L376 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, 1, 1, 1, 1, 1] [2018-09-21 18:28:13,827 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:28:13,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1642116324, now seen corresponding path program 1 times [2018-09-21 18:28:13,827 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:28:13,827 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 [2018-09-21 18:28:13,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:28:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:28:15,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:28:16,538 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-21 18:28:25,987 WARN L178 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 13 [2018-09-21 18:28:28,077 WARN L797 $PredicateComparison]: unable to prove that (exists ((__ieee754_expf_~c~0 (_ FloatingPoint 8 24)) (__ieee754_expf_~t~0 (_ FloatingPoint 8 24)) (__ieee754_expf_~lo~0 (_ FloatingPoint 8 24))) (= (fp.sub RNE c_~one_exp~0 (let ((.cse0 (fp.sub RNE (fp.sub RNE |c___ieee754_expf_#in~x| (fp.mul RNE __ieee754_expf_~t~0 (select c_~ln2HI_exp~0 (_ bv0 32)))) __ieee754_expf_~lo~0))) (fp.sub RNE (fp.div RNE (fp.mul RNE .cse0 __ieee754_expf_~c~0) (fp.sub RNE __ieee754_expf_~c~0 ((_ to_fp 8 24) RNE ((_ to_fp 11 53) RNE 2.0)))) .cse0))) |c___ieee754_expf_#res|)) is different from false [2018-09-21 18:28:30,137 WARN L819 $PredicateComparison]: unable to prove that (exists ((__ieee754_expf_~c~0 (_ FloatingPoint 8 24)) (__ieee754_expf_~t~0 (_ FloatingPoint 8 24)) (__ieee754_expf_~lo~0 (_ FloatingPoint 8 24))) (= (fp.sub RNE c_~one_exp~0 (let ((.cse0 (fp.sub RNE (fp.sub RNE |c___ieee754_expf_#in~x| (fp.mul RNE __ieee754_expf_~t~0 (select c_~ln2HI_exp~0 (_ bv0 32)))) __ieee754_expf_~lo~0))) (fp.sub RNE (fp.div RNE (fp.mul RNE .cse0 __ieee754_expf_~c~0) (fp.sub RNE __ieee754_expf_~c~0 ((_ to_fp 8 24) RNE ((_ to_fp 11 53) RNE 2.0)))) .cse0))) |c___ieee754_expf_#res|)) is different from true [2018-09-21 18:28:31,045 INFO L303 Elim1Store]: Index analysis took 904 ms [2018-09-21 18:28:31,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2018-09-21 18:28:31,047 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:28:31,626 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2018-09-21 18:28:31,627 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:50, output treesize:46 [2018-09-21 18:28:37,438 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-21 18:28:43,636 WARN L178 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-21 18:28:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:28:51,247 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:28:51,281 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:28:51,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-21 18:28:51,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-21 18:28:51,282 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-21 18:28:51,282 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=67, Unknown=8, NotChecked=16, Total=110 [2018-09-21 18:28:51,284 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 11 states. [2018-09-21 18:29:12,795 WARN L819 $PredicateComparison]: unable to prove that (and (exists ((__ieee754_expf_~t~0 (_ FloatingPoint 8 24))) (= c___ieee754_expf_~hi~0 (fp.sub RNE |c___ieee754_expf_#in~x| (fp.mul RNE __ieee754_expf_~t~0 (select c_~ln2HI_exp~0 (_ bv0 32)))))) (exists ((__ieee754_expf_~t~0 (_ FloatingPoint 8 24)) (__ieee754_expf_~lo~0 (_ FloatingPoint 8 24))) (= (fp.sub RNE (fp.sub RNE |c___ieee754_expf_#in~x| (fp.mul RNE __ieee754_expf_~t~0 (select c_~ln2HI_exp~0 (_ bv0 32)))) __ieee754_expf_~lo~0) c___ieee754_expf_~x))) is different from true [2018-09-21 18:29:37,677 WARN L178 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 26 [2018-09-21 18:29:40,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:29:40,361 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2018-09-21 18:29:40,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:29:40,362 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2018-09-21 18:29:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:29:40,364 INFO L225 Difference]: With dead ends: 86 [2018-09-21 18:29:40,364 INFO L226 Difference]: Without dead ends: 81 [2018-09-21 18:29:40,365 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=25, Invalid=83, Unknown=10, NotChecked=38, Total=156 [2018-09-21 18:29:40,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-21 18:29:40,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-21 18:29:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-21 18:29:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-09-21 18:29:40,379 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 37 [2018-09-21 18:29:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:29:40,379 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-09-21 18:29:40,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-21 18:29:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-09-21 18:29:40,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-21 18:29:40,383 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:29:40,383 INFO L376 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, 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] [2018-09-21 18:29:40,383 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:29:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash 654451945, now seen corresponding path program 1 times [2018-09-21 18:29:40,384 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:29:40,384 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 [2018-09-21 18:29:40,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:29:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:29:41,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:29:48,017 WARN L178 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 13 [2018-09-21 18:29:53,046 WARN L178 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-21 18:29:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:29:53,090 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:29:53,119 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:29:53,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:29:53,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-21 18:29:53,119 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-21 18:29:53,120 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:29:53,120 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 6 states. [2018-09-21 18:30:15,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:30:15,895 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-09-21 18:30:15,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-21 18:30:15,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2018-09-21 18:30:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:30:15,944 INFO L225 Difference]: With dead ends: 80 [2018-09-21 18:30:15,944 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:30:15,945 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:30:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:30:15,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:30:15,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:30:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:30:15,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2018-09-21 18:30:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:30:15,947 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:30:15,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-21 18:30:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:30:15,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:30:15,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:30:15 BoogieIcfgContainer [2018-09-21 18:30:15,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:30:15,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:30:15,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:30:15,955 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:30:15,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:27:15" (3/4) ... [2018-09-21 18:30:15,959 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:30:15,966 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-21 18:30:15,966 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __ieee754_expf [2018-09-21 18:30:15,966 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:30:15,967 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:30:15,978 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2018-09-21 18:30:15,978 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-09-21 18:30:15,978 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-09-21 18:30:16,056 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:30:16,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:30:16,057 INFO L168 Benchmark]: Toolchain (without parser) took 192288.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.7 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -165.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:30:16,059 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:30:16,059 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.99 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:30:16,060 INFO L168 Benchmark]: Boogie Preprocessor took 96.69 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:30:16,060 INFO L168 Benchmark]: RCFGBuilder took 11003.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -153.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:30:16,062 INFO L168 Benchmark]: TraceAbstraction took 180668.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -35.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:30:16,062 INFO L168 Benchmark]: Witness Printer took 101.88 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: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:30:16,066 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 409.99 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 935.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 96.69 ms. Allocated memory is still 1.0 GB. Free memory is still 935.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 11003.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -153.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 180668.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -35.4 MB). Peak memory consumption was 27.5 MB. Max. memory is 11.5 GB. * Witness Printer took 101.88 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: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 89 locations, 1 error locations. SAFE Result, 180.6s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 126.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 548 SDtfs, 383 SDslu, 2743 SDs, 0 SdLazy, 477 SolverSat, 11 SolverUnsat, 35 SolverUnknown, 0 SolverNotchecked, 108.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 274 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 61.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred 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, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 50.0s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 242 ConstructedInterpolants, 57 QuantifiedInterpolants, 69960 SizeOfPredicates, 45 NumberOfNonLiveVariables, 758 ConjunctsInSsa, 59 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...