./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1252a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1252a_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 f441bd4a1f5705911b7315c074b39e665542818e .................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1252a_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 f441bd4a1f5705911b7315c074b39e665542818e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 04:06:40,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:06:40,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:06:40,450 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:06:40,450 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:06:40,452 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:06:40,453 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:06:40,456 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:06:40,458 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:06:40,459 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:06:40,467 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:06:40,468 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:06:40,469 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:06:40,469 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:06:40,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:06:40,474 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:06:40,475 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:06:40,478 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:06:40,484 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:06:40,486 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:06:40,487 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:06:40,488 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:06:40,492 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:06:40,492 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:06:40,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:06:40,493 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:06:40,494 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:06:40,495 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:06:40,496 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:06:40,497 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:06:40,497 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:06:40,497 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:06:40,499 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:06:40,499 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:06:40,500 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:06:40,501 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:06:40,502 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:06:40,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:06:40,522 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:06:40,523 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:06:40,523 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:06:40,523 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:06:40,524 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:06:40,524 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:06:40,524 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:06:40,525 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:06:40,525 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:06:40,525 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:06:40,525 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:06:40,525 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:06:40,525 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:06:40,526 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:06:40,527 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:06:40,527 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:06:40,527 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:06:40,527 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:06:40,527 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:06:40,527 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:06:40,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:06:40,529 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:06:40,529 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:06:40,529 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:06:40,529 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:06:40,529 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:06:40,529 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:06:40,530 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 -> f441bd4a1f5705911b7315c074b39e665542818e [2018-12-31 04:06:40,569 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:06:40,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:06:40,591 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:06:40,593 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:06:40,593 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:06:40,594 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-12-31 04:06:40,657 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbb45b35/2da848e31da94a54a6145d61e02d496f/FLAG09b2f6208 [2018-12-31 04:06:41,194 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:06:41,195 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-12-31 04:06:41,203 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbb45b35/2da848e31da94a54a6145d61e02d496f/FLAG09b2f6208 [2018-12-31 04:06:41,522 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dbb45b35/2da848e31da94a54a6145d61e02d496f [2018-12-31 04:06:41,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:06:41,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:06:41,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:06:41,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:06:41,536 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:06:41,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:41,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@210ca454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41, skipping insertion in model container [2018-12-31 04:06:41,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:41,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:06:41,571 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:06:41,819 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:06:41,827 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:06:41,867 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:06:41,902 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:06:41,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41 WrapperNode [2018-12-31 04:06:41,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:06:41,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:06:41,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:06:41,904 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:06:41,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:41,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:41,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:06:41,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:06:41,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:06:41,960 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:06:41,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:41,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:41,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:41,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:42,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:42,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:42,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (1/1) ... [2018-12-31 04:06:42,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:06:42,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:06:42,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:06:42,084 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:06:42,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (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 [2018-12-31 04:06:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-31 04:06:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:06:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:06:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:06:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 04:06:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:06:42,758 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:06:42,758 INFO L280 CfgBuilder]: Removed 18 assue(true) statements. [2018-12-31 04:06:42,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:06:42 BoogieIcfgContainer [2018-12-31 04:06:42,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:06:42,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:06:42,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:06:42,764 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:06:42,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:06:41" (1/3) ... [2018-12-31 04:06:42,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bf17e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:06:42, skipping insertion in model container [2018-12-31 04:06:42,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:41" (2/3) ... [2018-12-31 04:06:42,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bf17e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:06:42, skipping insertion in model container [2018-12-31 04:06:42,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:06:42" (3/3) ... [2018-12-31 04:06:42,768 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-12-31 04:06:42,778 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:06:42,787 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:06:42,804 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:06:42,835 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:06:42,836 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:06:42,836 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:06:42,836 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:06:42,836 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:06:42,837 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:06:42,837 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:06:42,837 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:06:42,837 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:06:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-31 04:06:42,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 04:06:42,858 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:42,859 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:42,861 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:42,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:42,866 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2018-12-31 04:06:42,868 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:06:42,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:06:42,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:06:42,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:42,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:06:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:43,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:43,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 04:06:43,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 04:06:43,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 04:06:43,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:06:43,025 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-31 04:06:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:43,057 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2018-12-31 04:06:43,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 04:06:43,059 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-31 04:06:43,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:43,075 INFO L225 Difference]: With dead ends: 62 [2018-12-31 04:06:43,075 INFO L226 Difference]: Without dead ends: 29 [2018-12-31 04:06:43,079 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:06:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-31 04:06:43,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-31 04:06:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-31 04:06:43,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2018-12-31 04:06:43,121 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2018-12-31 04:06:43,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:43,122 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2018-12-31 04:06:43,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 04:06:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2018-12-31 04:06:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-31 04:06:43,123 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:43,123 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:43,123 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:43,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:43,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2018-12-31 04:06:43,124 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:06:43,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:06:43,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:06:43,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:43,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:06:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:43,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:43,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:06:43,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:06:43,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:06:43,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:06:43,319 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2018-12-31 04:06:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:43,521 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2018-12-31 04:06:43,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:06:43,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-31 04:06:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:43,522 INFO L225 Difference]: With dead ends: 53 [2018-12-31 04:06:43,523 INFO L226 Difference]: Without dead ends: 44 [2018-12-31 04:06:43,525 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:06:43,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-31 04:06:43,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2018-12-31 04:06:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-31 04:06:43,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2018-12-31 04:06:43,536 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2018-12-31 04:06:43,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:43,536 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2018-12-31 04:06:43,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:06:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2018-12-31 04:06:43,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-31 04:06:43,538 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:43,538 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:43,539 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:43,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:43,539 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2018-12-31 04:06:43,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:06:43,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:06:43,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:06:43,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:43,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:06:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:43,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:43,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:06:43,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:06:43,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:06:43,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:06:43,717 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2018-12-31 04:06:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:43,960 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2018-12-31 04:06:43,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:06:43,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-31 04:06:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:43,965 INFO L225 Difference]: With dead ends: 55 [2018-12-31 04:06:43,965 INFO L226 Difference]: Without dead ends: 46 [2018-12-31 04:06:43,966 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:06:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-31 04:06:43,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2018-12-31 04:06:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-31 04:06:43,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2018-12-31 04:06:43,978 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2018-12-31 04:06:43,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:43,978 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2018-12-31 04:06:43,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:06:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2018-12-31 04:06:43,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-31 04:06:43,979 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:43,979 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:43,981 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:43,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:43,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2018-12-31 04:06:43,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:06:43,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:06:43,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:06:43,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:43,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:06:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:06:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:06:44,056 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:06:44,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:06:44 BoogieIcfgContainer [2018-12-31 04:06:44,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:06:44,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:06:44,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:06:44,086 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:06:44,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:06:42" (3/4) ... [2018-12-31 04:06:44,090 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-31 04:06:44,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:06:44,092 INFO L168 Benchmark]: Toolchain (without parser) took 2564.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -94.7 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:44,094 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:06:44,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.28 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:44,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.19 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:44,096 INFO L168 Benchmark]: Boogie Preprocessor took 123.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:44,098 INFO L168 Benchmark]: RCFGBuilder took 675.10 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:44,098 INFO L168 Benchmark]: TraceAbstraction took 1324.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:44,099 INFO L168 Benchmark]: Witness Printer took 5.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:44,105 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 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 373.28 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.19 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 123.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 675.10 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1324.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; [L20] __uint32_t w; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-2e94e6a [2018-12-31 04:06:46,625 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2018-12-31 04:06:46,691 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:06:46,691 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:06:46,692 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:06:46,696 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:06:46,698 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:06:46,699 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:06:46,701 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:06:46,702 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:06:46,704 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:06:46,706 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:06:46,706 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:06:46,707 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:06:46,707 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:06:46,709 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-31 04:06:46,736 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:06:46,739 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:06:46,740 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:06:46,741 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:06:46,741 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:06:46,741 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:06:46,741 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:06:46,741 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:06:46,742 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:06:46,742 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:06:46,742 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:06:46,742 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:06:46,742 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-31 04:06:46,742 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-31 04:06:46,743 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:06:46,743 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:06:46,743 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:06:46,743 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:06:46,743 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:06:46,743 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:06:46,746 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:06:46,746 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:06:46,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:06:46,746 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:06:46,746 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:06:46,747 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:06:46,747 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-31 04:06:46,747 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:06:46,747 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-31 04:06:46,747 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-31 04:06:46,747 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 -> f441bd4a1f5705911b7315c074b39e665542818e [2018-12-31 04:06:46,790 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:06:46,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:06:46,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:06:46,811 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:06:46,812 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:06:46,813 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-12-31 04:06:46,880 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ab4dc6b/34642c5be4d842d9a42d0339bdf9bf04/FLAG682776cbd [2018-12-31 04:06:47,312 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:06:47,313 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1252a_true-unreach-call.c [2018-12-31 04:06:47,320 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ab4dc6b/34642c5be4d842d9a42d0339bdf9bf04/FLAG682776cbd [2018-12-31 04:06:47,696 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31ab4dc6b/34642c5be4d842d9a42d0339bdf9bf04 [2018-12-31 04:06:47,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:06:47,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:06:47,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:06:47,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:06:47,706 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:06:47,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:06:47" (1/1) ... [2018-12-31 04:06:47,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5080a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:47, skipping insertion in model container [2018-12-31 04:06:47,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:06:47" (1/1) ... [2018-12-31 04:06:47,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:06:47,747 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:06:48,000 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:06:48,006 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:06:48,038 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:06:48,066 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:06:48,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48 WrapperNode [2018-12-31 04:06:48,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:06:48,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:06:48,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:06:48,067 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:06:48,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... [2018-12-31 04:06:48,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... [2018-12-31 04:06:48,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:06:48,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:06:48,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:06:48,114 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:06:48,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... [2018-12-31 04:06:48,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... [2018-12-31 04:06:48,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... [2018-12-31 04:06:48,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... [2018-12-31 04:06:48,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... [2018-12-31 04:06:48,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... [2018-12-31 04:06:48,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... [2018-12-31 04:06:48,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:06:48,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:06:48,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:06:48,238 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:06:48,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:06:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-31 04:06:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:06:48,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:06:48,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-31 04:06:48,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 04:06:48,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:06:48,529 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 04:06:48,716 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 04:06:48,830 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 04:06:48,863 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:06:48,864 INFO L280 CfgBuilder]: Removed 18 assue(true) statements. [2018-12-31 04:06:48,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:06:48 BoogieIcfgContainer [2018-12-31 04:06:48,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:06:48,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:06:48,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:06:48,869 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:06:48,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:06:47" (1/3) ... [2018-12-31 04:06:48,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d6b623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:06:48, skipping insertion in model container [2018-12-31 04:06:48,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:06:48" (2/3) ... [2018-12-31 04:06:48,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d6b623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:06:48, skipping insertion in model container [2018-12-31 04:06:48,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:06:48" (3/3) ... [2018-12-31 04:06:48,872 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a_true-unreach-call.c [2018-12-31 04:06:48,883 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:06:48,892 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:06:48,910 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:06:48,940 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:06:48,942 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:06:48,942 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:06:48,942 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:06:48,942 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:06:48,942 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:06:48,942 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:06:48,943 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:06:48,943 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:06:48,956 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-31 04:06:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 04:06:48,963 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:48,964 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:48,966 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:48,972 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2018-12-31 04:06:48,975 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:06:48,976 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 [2018-12-31 04:06:48,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:49,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:06:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:49,059 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:06:49,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:49,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 04:06:49,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 04:06:49,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 04:06:49,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:06:49,094 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-31 04:06:49,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:49,113 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2018-12-31 04:06:49,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 04:06:49,114 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-31 04:06:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:49,125 INFO L225 Difference]: With dead ends: 62 [2018-12-31 04:06:49,125 INFO L226 Difference]: Without dead ends: 29 [2018-12-31 04:06:49,129 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:06:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-31 04:06:49,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-31 04:06:49,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-31 04:06:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2018-12-31 04:06:49,169 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2018-12-31 04:06:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:49,169 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2018-12-31 04:06:49,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 04:06:49,169 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2018-12-31 04:06:49,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-31 04:06:49,170 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:49,170 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:49,171 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2018-12-31 04:06:49,171 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:06:49,172 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) [2018-12-31 04:06:49,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-31 04:06:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:49,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:06:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:49,297 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:06:49,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:49,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:06:49,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:06:49,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:06:49,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:06:49,312 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2018-12-31 04:06:49,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:49,624 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2018-12-31 04:06:49,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:06:49,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-31 04:06:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:49,627 INFO L225 Difference]: With dead ends: 53 [2018-12-31 04:06:49,627 INFO L226 Difference]: Without dead ends: 44 [2018-12-31 04:06:49,630 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:06:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-31 04:06:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2018-12-31 04:06:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-31 04:06:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2018-12-31 04:06:49,641 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2018-12-31 04:06:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:49,641 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2018-12-31 04:06:49,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:06:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2018-12-31 04:06:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-31 04:06:49,643 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:49,644 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:49,644 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2018-12-31 04:06:49,646 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:06:49,646 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 [2018-12-31 04:06:49,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:49,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:06:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:49,737 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:06:49,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:49,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:06:49,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:06:49,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:06:49,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:06:49,751 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2018-12-31 04:06:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:49,944 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2018-12-31 04:06:49,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:06:49,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-12-31 04:06:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:49,947 INFO L225 Difference]: With dead ends: 50 [2018-12-31 04:06:49,947 INFO L226 Difference]: Without dead ends: 26 [2018-12-31 04:06:49,948 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:06:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-31 04:06:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-31 04:06:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-31 04:06:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2018-12-31 04:06:49,960 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2018-12-31 04:06:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:49,962 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2018-12-31 04:06:49,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:06:49,962 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2018-12-31 04:06:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-31 04:06:49,963 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:49,965 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:49,965 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:49,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:49,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2018-12-31 04:06:49,967 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:06:49,968 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 [2018-12-31 04:06:49,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:50,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:06:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:50,054 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:06:50,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:50,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:06:50,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:06:50,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:06:50,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:06:50,068 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 4 states. [2018-12-31 04:06:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:50,164 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-12-31 04:06:50,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:06:50,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-31 04:06:50,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:50,166 INFO L225 Difference]: With dead ends: 48 [2018-12-31 04:06:50,166 INFO L226 Difference]: Without dead ends: 39 [2018-12-31 04:06:50,167 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:06:50,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-31 04:06:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2018-12-31 04:06:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-31 04:06:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-12-31 04:06:50,173 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2018-12-31 04:06:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:50,173 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-12-31 04:06:50,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:06:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2018-12-31 04:06:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-31 04:06:50,174 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:50,174 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:50,175 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:50,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:50,175 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2018-12-31 04:06:50,176 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:06:50,176 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) [2018-12-31 04:06:50,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-31 04:06:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:50,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:06:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:50,351 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:06:50,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:50,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 04:06:50,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 04:06:50,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 04:06:50,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:06:50,362 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2018-12-31 04:06:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:50,464 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2018-12-31 04:06:50,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 04:06:50,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-31 04:06:50,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:50,468 INFO L225 Difference]: With dead ends: 39 [2018-12-31 04:06:50,468 INFO L226 Difference]: Without dead ends: 23 [2018-12-31 04:06:50,469 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-31 04:06:50,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-31 04:06:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-31 04:06:50,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-31 04:06:50,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-31 04:06:50,475 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2018-12-31 04:06:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:50,475 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-31 04:06:50,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 04:06:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-31 04:06:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-31 04:06:50,476 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:50,476 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:50,476 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2018-12-31 04:06:50,477 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:06:50,477 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 [2018-12-31 04:06:50,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:50,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:06:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:50,559 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:06:50,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:50,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 04:06:50,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 04:06:50,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 04:06:50,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 04:06:50,570 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2018-12-31 04:06:50,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:50,586 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-12-31 04:06:50,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 04:06:50,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-31 04:06:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:50,590 INFO L225 Difference]: With dead ends: 33 [2018-12-31 04:06:50,591 INFO L226 Difference]: Without dead ends: 23 [2018-12-31 04:06:50,591 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 04:06:50,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-31 04:06:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-31 04:06:50,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-31 04:06:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-12-31 04:06:50,597 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-12-31 04:06:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:50,597 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-12-31 04:06:50,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 04:06:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-12-31 04:06:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-31 04:06:50,598 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:50,599 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:50,599 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:50,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:50,599 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2018-12-31 04:06:50,600 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:06:50,600 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 [2018-12-31 04:06:50,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:50,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:06:51,007 WARN L181 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 1 [2018-12-31 04:06:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:51,010 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:06:51,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:51,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-31 04:06:51,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 04:06:51,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 04:06:51,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-31 04:06:51,028 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2018-12-31 04:06:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:51,227 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-12-31 04:06:51,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 04:06:51,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-12-31 04:06:51,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:51,229 INFO L225 Difference]: With dead ends: 26 [2018-12-31 04:06:51,229 INFO L226 Difference]: Without dead ends: 23 [2018-12-31 04:06:51,230 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-12-31 04:06:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-31 04:06:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-31 04:06:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-31 04:06:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2018-12-31 04:06:51,235 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 18 [2018-12-31 04:06:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:51,235 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2018-12-31 04:06:51,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 04:06:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2018-12-31 04:06:51,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-31 04:06:51,236 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:06:51,236 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:06:51,236 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:06:51,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:06:51,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2018-12-31 04:06:51,237 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:06:51,237 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-31 04:06:51,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:06:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:06:51,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:06:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:06:51,541 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:06:51,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:06:51,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-31 04:06:51,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-31 04:06:51,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-31 04:06:51,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-31 04:06:51,554 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 10 states. [2018-12-31 04:06:51,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:06:51,830 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2018-12-31 04:06:51,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-31 04:06:51,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-12-31 04:06:51,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:06:51,832 INFO L225 Difference]: With dead ends: 23 [2018-12-31 04:06:51,832 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 04:06:51,833 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-12-31 04:06:51,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 04:06:51,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 04:06:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 04:06:51,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 04:06:51,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-12-31 04:06:51,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:06:51,834 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 04:06:51,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-31 04:06:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 04:06:51,835 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 04:06:51,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 04:06:52,059 WARN L181 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-12-31 04:06:52,341 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 39) no Hoare annotation was computed. [2018-12-31 04:06:52,341 INFO L448 ceAbstractionStarter]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2018-12-31 04:06:52,341 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 04:06:52,341 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 04:06:52,341 INFO L448 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2018-12-31 04:06:52,341 INFO L448 ceAbstractionStarter]: For program point L78-2(lines 78 81) no Hoare annotation was computed. [2018-12-31 04:06:52,342 INFO L444 ceAbstractionStarter]: At program point L62(lines 53 63) the Hoare annotation is: (and (= ULTIMATE.start___fpclassify_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_fmax_float_~y) (= (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1)) (_ +zero 8 24)) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (_ bv0 32) |ULTIMATE.start___signbit_float_#res|) (= |ULTIMATE.start_fmax_float_#res| (_ +zero 8 24)) |ULTIMATE.start_main_#t~short9| (= ULTIMATE.start_main_~res~0 (_ +zero 8 24)) (= ULTIMATE.start___signbit_float_~x (_ +zero 8 24))) [2018-12-31 04:06:52,342 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 79) no Hoare annotation was computed. [2018-12-31 04:06:52,342 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-12-31 04:06:52,342 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 39) no Hoare annotation was computed. [2018-12-31 04:06:52,343 INFO L448 ceAbstractionStarter]: For program point L30-1(lines 30 39) no Hoare annotation was computed. [2018-12-31 04:06:52,343 INFO L448 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-12-31 04:06:52,343 INFO L444 ceAbstractionStarter]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start___fpclassify_float_~x .cse0) (= (_ +zero 8 24) ULTIMATE.start_fmax_float_~y) (= ULTIMATE.start_fmax_float_~x .cse0))) [2018-12-31 04:06:52,343 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 19 40) no Hoare annotation was computed. [2018-12-31 04:06:52,343 INFO L448 ceAbstractionStarter]: For program point L22-5(lines 22 26) no Hoare annotation was computed. [2018-12-31 04:06:52,343 INFO L444 ceAbstractionStarter]: At program point L22-6(lines 22 26) the Hoare annotation is: (and (= ULTIMATE.start___fpclassify_float_~x (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_fmax_float_~y) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24)))) [2018-12-31 04:06:52,344 INFO L448 ceAbstractionStarter]: For program point L22-7(lines 19 40) no Hoare annotation was computed. [2018-12-31 04:06:52,344 INFO L448 ceAbstractionStarter]: For program point L47(lines 47 49) no Hoare annotation was computed. [2018-12-31 04:06:52,344 INFO L444 ceAbstractionStarter]: At program point L39(lines 19 40) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start___fpclassify_float_~x .cse0) (= (_ +zero 8 24) ULTIMATE.start_fmax_float_~y) (= ULTIMATE.start_fmax_float_~x .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= (bvadd |ULTIMATE.start___fpclassify_float_#res| (_ bv4294967294 32)) (_ bv0 32)))) [2018-12-31 04:06:52,344 INFO L444 ceAbstractionStarter]: At program point L39-1(lines 19 40) the Hoare annotation is: (and (= ULTIMATE.start___fpclassify_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_fmax_float_~y) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= (bvadd |ULTIMATE.start___fpclassify_float_#res| (_ bv4294967294 32)) (_ bv0 32))) [2018-12-31 04:06:52,344 INFO L448 ceAbstractionStarter]: For program point L56-1(lines 56 60) no Hoare annotation was computed. [2018-12-31 04:06:52,345 INFO L444 ceAbstractionStarter]: At program point L56-2(lines 56 60) the Hoare annotation is: (and (= ULTIMATE.start___fpclassify_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_fmax_float_~y) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= |ULTIMATE.start_fmax_float_#res| (_ +zero 8 24)) |ULTIMATE.start_main_#t~short9| (= ULTIMATE.start_main_~res~0 (_ +zero 8 24)) (= ULTIMATE.start___signbit_float_~x (_ +zero 8 24))) [2018-12-31 04:06:52,347 INFO L448 ceAbstractionStarter]: For program point L56-3(lines 56 60) no Hoare annotation was computed. [2018-12-31 04:06:52,347 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-12-31 04:06:52,347 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 39) no Hoare annotation was computed. [2018-12-31 04:06:52,347 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 04:06:52,347 INFO L448 ceAbstractionStarter]: For program point L33-1(lines 33 39) no Hoare annotation was computed. [2018-12-31 04:06:52,347 INFO L451 ceAbstractionStarter]: At program point L83(lines 65 84) the Hoare annotation is: true [2018-12-31 04:06:52,347 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-31 04:06:52,348 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-12-31 04:06:52,348 INFO L444 ceAbstractionStarter]: At program point L50-3(lines 42 51) the Hoare annotation is: (and (= ULTIMATE.start___fpclassify_float_~x (_ +zero 8 24)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ +zero 8 24) ULTIMATE.start_fmax_float_~y) (= ULTIMATE.start_fmax_float_~x (fp.neg (_ +zero 8 24))) (= |ULTIMATE.start_fmax_float_#res| (_ +zero 8 24))) [2018-12-31 04:06:52,348 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 45) no Hoare annotation was computed. [2018-12-31 04:06:52,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:06:52 BoogieIcfgContainer [2018-12-31 04:06:52,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:06:52,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:06:52,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:06:52,368 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:06:52,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:06:48" (3/4) ... [2018-12-31 04:06:52,372 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 04:06:52,387 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-12-31 04:06:52,387 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-31 04:06:52,387 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-31 04:06:52,420 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967294bv32) == 0bv32 [2018-12-31 04:06:52,420 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~Pluszero~LONGDOUBLE() [2018-12-31 04:06:52,421 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && res == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() [2018-12-31 04:06:52,422 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967294bv32) == 0bv32 [2018-12-31 04:06:52,422 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == \result) && \result == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && res == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() [2018-12-31 04:06:52,463 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:06:52,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:06:52,464 INFO L168 Benchmark]: Toolchain (without parser) took 4764.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 952.7 MB in the beginning and 886.4 MB in the end (delta: 66.3 MB). Peak memory consumption was 181.1 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:52,465 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:06:52,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.84 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:52,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:52,466 INFO L168 Benchmark]: Boogie Preprocessor took 123.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:52,467 INFO L168 Benchmark]: RCFGBuilder took 626.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:52,468 INFO L168 Benchmark]: TraceAbstraction took 3501.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 893.2 MB in the end (delta: 188.6 MB). Peak memory consumption was 188.6 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:52,468 INFO L168 Benchmark]: Witness Printer took 95.53 ms. Allocated memory is still 1.1 GB. Free memory was 893.2 MB in the beginning and 886.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-31 04:06:52,472 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 364.84 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.24 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 123.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 626.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3501.54 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 893.2 MB in the end (delta: 188.6 MB). Peak memory consumption was 188.6 MB. Max. memory is 11.5 GB. * Witness Printer took 95.53 ms. Allocated memory is still 1.1 GB. Free memory was 893.2 MB in the beginning and 886.4 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 79]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967294bv32) == 0bv32 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((((((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && res == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (((x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~bvadd64(\result, 4294967294bv32) == 0bv32 - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: ((((((((x == ~Pluszero~LONGDOUBLE() && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && 0bv32 == \result) && \result == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && res == ~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. SAFE Result, 3.4s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 226 SDtfs, 141 SDslu, 293 SDs, 0 SdLazy, 124 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 171 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5420 SizeOfPredicates, 35 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...