/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031_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 20ebedc7025deba0ba6b1d81eeaced9b389ea599 ............................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031_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 20ebedc7025deba0ba6b1d81eeaced9b389ea599 .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-40ef509 [2018-09-20 15:29:45,673 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:29:45,676 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:29:45,690 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:29:45,691 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:29:45,692 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:29:45,694 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:29:45,696 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:29:45,698 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:29:45,699 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:29:45,701 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:29:45,702 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:29:45,703 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:29:45,705 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:29:45,706 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:29:45,707 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:29:45,707 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:29:45,709 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:29:45,711 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:29:45,713 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:29:45,714 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:29:45,715 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:29:45,718 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:29:45,718 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:29:45,719 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:29:45,720 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:29:45,721 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:29:45,721 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:29:45,722 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:29:45,723 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:29:45,723 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:29:45,724 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:29:45,724 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:29:45,725 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:29:45,726 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:29:45,726 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:29:45,727 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 15:29:45,742 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:29:45,742 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:29:45,743 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:29:45,743 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:29:45,744 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:29:45,744 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:29:45,744 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:29:45,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:29:45,744 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:29:45,744 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 15:29:45,745 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:29:45,745 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:29:45,745 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:29:45,745 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:29:45,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:29:45,745 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:29:45,746 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:29:45,746 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:29:45,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:29:45,746 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:29:45,748 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:29:45,749 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:29:45,749 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:29:45,749 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:29:45,749 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:29:45,749 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:29:45,749 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 15:29:45,750 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:29:45,750 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 15:29:45,750 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 -> 20ebedc7025deba0ba6b1d81eeaced9b389ea599 [2018-09-20 15:29:45,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:29:45,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:29:45,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:29:45,848 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:29:45,849 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:29:45,849 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-09-20 15:29:46,213 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fd68537/59c73ccb990544008d4f7ace4716b458/FLAGe0a453819 [2018-09-20 15:29:46,340 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:29:46,341 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-09-20 15:29:46,349 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fd68537/59c73ccb990544008d4f7ace4716b458/FLAGe0a453819 [2018-09-20 15:29:46,379 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70fd68537/59c73ccb990544008d4f7ace4716b458 [2018-09-20 15:29:46,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:29:46,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:29:46,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:29:46,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:29:46,401 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:29:46,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d7c57e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46, skipping insertion in model container [2018-09-20 15:29:46,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,418 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:29:46,615 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:29:46,633 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:29:46,646 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:29:46,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46 WrapperNode [2018-09-20 15:29:46,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:29:46,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:29:46,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:29:46,674 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:29:46,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46" (1/1) ... [2018-09-20 15:29:46,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:29:46,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:29:46,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:29:46,722 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:29:46,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:29:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:29:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:29:46,802 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-09-20 15:29:46,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-20 15:29:46,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:29:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:29:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-09-20 15:29:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:29:46,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-20 15:29:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-20 15:29:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:29:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-20 15:29:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-20 15:29:46,804 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-20 15:29:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:29:46,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:29:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:29:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-20 15:29:46,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-20 15:29:47,490 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:29:47,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:47 BoogieIcfgContainer [2018-09-20 15:29:47,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:29:47,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:29:47,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:29:47,496 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:29:47,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:29:46" (1/3) ... [2018-09-20 15:29:47,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbb1c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:29:47, skipping insertion in model container [2018-09-20 15:29:47,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:46" (2/3) ... [2018-09-20 15:29:47,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbb1c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:29:47, skipping insertion in model container [2018-09-20 15:29:47,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:47" (3/3) ... [2018-09-20 15:29:47,500 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031_true-unreach-call.c [2018-09-20 15:29:47,510 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:29:47,519 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:29:47,570 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:29:47,571 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:29:47,571 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:29:47,571 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:29:47,571 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:29:47,572 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:29:47,572 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:29:47,572 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:29:47,572 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:29:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2018-09-20 15:29:47,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-20 15:29:47,600 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:47,601 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:47,604 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:47,610 INFO L82 PathProgramCache]: Analyzing trace with hash -618862010, now seen corresponding path program 1 times [2018-09-20 15:29:47,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:29:47,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:29:47,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:29:47,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:47,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:29:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:29:47,747 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:47,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:29:47,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:29:47,769 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:29:47,770 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:29:47,773 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2018-09-20 15:29:47,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:47,805 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2018-09-20 15:29:47,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:29:47,807 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-20 15:29:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:47,823 INFO L225 Difference]: With dead ends: 92 [2018-09-20 15:29:47,823 INFO L226 Difference]: Without dead ends: 46 [2018-09-20 15:29:47,830 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:29:47,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-20 15:29:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-09-20 15:29:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-20 15:29:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2018-09-20 15:29:47,881 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 22 [2018-09-20 15:29:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:47,882 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2018-09-20 15:29:47,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:29:47,882 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2018-09-20 15:29:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-20 15:29:47,884 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:47,884 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:47,887 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:47,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1742972752, now seen corresponding path program 1 times [2018-09-20 15:29:47,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 15:29:47,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 15:29:47,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:29:47,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:47,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 15:29:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:29:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 15:29:48,078 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 15:29:48,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:29:48 BoogieIcfgContainer [2018-09-20 15:29:48,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:29:48,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:29:48,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:29:48,110 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:29:48,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:47" (3/4) ... [2018-09-20 15:29:48,115 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 15:29:48,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:29:48,116 INFO L168 Benchmark]: Toolchain (without parser) took 1732.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:48,119 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:29:48,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:48,121 INFO L168 Benchmark]: Boogie Preprocessor took 47.86 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:29:48,121 INFO L168 Benchmark]: RCFGBuilder took 769.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:48,122 INFO L168 Benchmark]: TraceAbstraction took 617.43 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:48,123 INFO L168 Benchmark]: Witness Printer took 5.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:29:48,127 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.37 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.86 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 769.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -185.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 617.43 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 55, overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L65] float x = 0.0f / 0.0f; [L66] CALL, EXPR round_float(x) VAL [\old(x)=8] [L12] __uint32_t w; [L14] int exponent_less_127; VAL [\old(x)=8, x=8] [L17] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=8, gf_u={5:0}, x=8] [L18] FCALL gf_u.value = (x) VAL [\old(x)=8, gf_u={5:0}, x=8] [L19] EXPR, FCALL gf_u.word VAL [\old(x)=8, gf_u={5:0}, gf_u.word=9, x=8] [L19] (w) = gf_u.word VAL [\old(x)=8, gf_u={5:0}, gf_u.word=9, w=9, x=8] [L19] FCALL (w) = gf_u.word VAL [(w) = gf_u.word=11, \old(x)=8, gf_u={5:0}, gf_u.word=9, w=9, x=8] [L20] COND FALSE !(0) VAL [\old(x)=8, w=9, x=8] [L22] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=8, exponent_less_127=128, w=9, x=8] [L24] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=8, exponent_less_127=128, w=9, x=8] [L40] COND TRUE exponent_less_127 == 128 [L42] RET return x + x; VAL [\old(x)=8, exponent_less_127=128, w=9, x=8] [L66] EXPR round_float(x) VAL [round_float(x)=7, x=8] [L66] float res = round_float(x); [L69] CALL, EXPR isnan_float(res) VAL [\old(x)=7] [L55] RET return x != x; VAL [\old(x)=7, \result=0, x=7] [L69] EXPR isnan_float(res) VAL [isnan_float(res)=0, res=7, x=8] [L69] COND TRUE !isnan_float(res) [L70] __VERIFIER_error() VAL [res=7, x=8] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-40ef509 [2018-09-20 15:29:50,483 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 15:29:50,485 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 15:29:50,498 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 15:29:50,498 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 15:29:50,499 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 15:29:50,501 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 15:29:50,503 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 15:29:50,505 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 15:29:50,506 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 15:29:50,507 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 15:29:50,507 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 15:29:50,509 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 15:29:50,510 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 15:29:50,511 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 15:29:50,512 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 15:29:50,513 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 15:29:50,515 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 15:29:50,518 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 15:29:50,519 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 15:29:50,521 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 15:29:50,522 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 15:29:50,525 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 15:29:50,525 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 15:29:50,525 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 15:29:50,527 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 15:29:50,528 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 15:29:50,529 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 15:29:50,530 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 15:29:50,532 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 15:29:50,532 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 15:29:50,533 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 15:29:50,533 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 15:29:50,533 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 15:29:50,535 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 15:29:50,536 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 15:29:50,536 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 15:29:50,567 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 15:29:50,567 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 15:29:50,569 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 15:29:50,570 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 15:29:50,571 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 15:29:50,572 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 15:29:50,572 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 15:29:50,572 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 15:29:50,573 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 15:29:50,573 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 15:29:50,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 15:29:50,573 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 15:29:50,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 15:29:50,573 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 15:29:50,574 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 15:29:50,574 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 15:29:50,574 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 15:29:50,574 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 15:29:50,574 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 15:29:50,577 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 15:29:50,577 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 15:29:50,577 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 15:29:50,577 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 15:29:50,578 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:29:50,578 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 15:29:50,578 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 15:29:50,579 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 15:29:50,580 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 15:29:50,580 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 15:29:50,580 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 15:29:50,580 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 15:29:50,580 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 -> 20ebedc7025deba0ba6b1d81eeaced9b389ea599 [2018-09-20 15:29:50,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 15:29:50,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 15:29:50,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 15:29:50,681 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 15:29:50,682 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 15:29:50,682 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-09-20 15:29:51,033 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a56f6c19a/ab6349668632489b8d361e92bbe1f5e8/FLAGe2d76701e [2018-09-20 15:29:51,229 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 15:29:51,230 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1031_true-unreach-call.c [2018-09-20 15:29:51,239 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a56f6c19a/ab6349668632489b8d361e92bbe1f5e8/FLAGe2d76701e [2018-09-20 15:29:51,267 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a56f6c19a/ab6349668632489b8d361e92bbe1f5e8 [2018-09-20 15:29:51,272 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 15:29:51,278 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 15:29:51,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 15:29:51,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 15:29:51,290 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 15:29:51,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4667a751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51, skipping insertion in model container [2018-09-20 15:29:51,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,309 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 15:29:51,542 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:29:51,563 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 15:29:51,579 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 15:29:51,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51 WrapperNode [2018-09-20 15:29:51,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 15:29:51,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 15:29:51,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 15:29:51,611 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 15:29:51,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51" (1/1) ... [2018-09-20 15:29:51,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 15:29:51,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 15:29:51,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 15:29:51,660 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 15:29:51,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 15:29:51,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 15:29:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 15:29:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2018-09-20 15:29:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-20 15:29:51,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 15:29:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 15:29:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2018-09-20 15:29:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-20 15:29:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-20 15:29:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-20 15:29:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-20 15:29:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-20 15:29:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-20 15:29:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-20 15:29:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 15:29:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 15:29:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 15:29:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-20 15:29:51,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-20 15:29:52,349 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:29:52,389 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-20 15:29:52,513 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 15:29:52,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:52 BoogieIcfgContainer [2018-09-20 15:29:52,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 15:29:52,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 15:29:52,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 15:29:52,520 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 15:29:52,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 03:29:51" (1/3) ... [2018-09-20 15:29:52,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e79f0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:29:52, skipping insertion in model container [2018-09-20 15:29:52,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 03:29:51" (2/3) ... [2018-09-20 15:29:52,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e79f0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 03:29:52, skipping insertion in model container [2018-09-20 15:29:52,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:52" (3/3) ... [2018-09-20 15:29:52,524 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031_true-unreach-call.c [2018-09-20 15:29:52,536 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 15:29:52,545 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 15:29:52,592 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 15:29:52,593 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 15:29:52,593 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 15:29:52,593 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 15:29:52,593 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 15:29:52,593 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 15:29:52,593 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 15:29:52,594 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 15:29:52,595 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 15:29:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-09-20 15:29:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-20 15:29:52,623 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:52,624 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:52,627 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:52,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1468538689, now seen corresponding path program 1 times [2018-09-20 15:29:52,637 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:29:52,637 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-20 15:29:52,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:52,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:29:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:29:52,747 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:29:52,761 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:52,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-20 15:29:52,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-20 15:29:52,777 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-20 15:29:52,778 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:29:52,781 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-09-20 15:29:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:52,803 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2018-09-20 15:29:52,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-20 15:29:52,804 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-20 15:29:52,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:52,816 INFO L225 Difference]: With dead ends: 90 [2018-09-20 15:29:52,816 INFO L226 Difference]: Without dead ends: 45 [2018-09-20 15:29:52,821 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-20 15:29:52,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-20 15:29:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-20 15:29:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:29:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-20 15:29:52,866 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 21 [2018-09-20 15:29:52,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:52,867 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-20 15:29:52,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-20 15:29:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-20 15:29:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-20 15:29:52,869 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:52,869 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:52,870 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:52,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1602380168, now seen corresponding path program 1 times [2018-09-20 15:29:52,871 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:29:52,871 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-20 15:29:52,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:52,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:29:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:29:53,944 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:29:53,957 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:53,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:29:53,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:29:53,962 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:29:53,962 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:29:53,962 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 9 states. [2018-09-20 15:29:54,500 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-20 15:29:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:55,660 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-09-20 15:29:55,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-20 15:29:55,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-20 15:29:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:55,664 INFO L225 Difference]: With dead ends: 54 [2018-09-20 15:29:55,664 INFO L226 Difference]: Without dead ends: 47 [2018-09-20 15:29:55,665 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-20 15:29:55,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-20 15:29:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-20 15:29:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-20 15:29:55,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-09-20 15:29:55,678 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 30 [2018-09-20 15:29:55,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:55,678 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-09-20 15:29:55,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:29:55,679 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-09-20 15:29:55,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-20 15:29:55,681 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:55,681 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:55,682 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:55,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1798893673, now seen corresponding path program 1 times [2018-09-20 15:29:55,683 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:29:55,683 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) [2018-09-20 15:29:55,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-20 15:29:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:55,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:29:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:29:56,096 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:29:56,111 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:56,111 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:29:56,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:29:56,112 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:29:56,112 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:29:56,113 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 9 states. [2018-09-20 15:29:56,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:56,785 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-09-20 15:29:56,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-20 15:29:56,787 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-20 15:29:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:56,788 INFO L225 Difference]: With dead ends: 52 [2018-09-20 15:29:56,789 INFO L226 Difference]: Without dead ends: 44 [2018-09-20 15:29:56,790 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-20 15:29:56,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-20 15:29:56,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-20 15:29:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-20 15:29:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2018-09-20 15:29:56,798 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 30 [2018-09-20 15:29:56,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:56,799 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2018-09-20 15:29:56,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:29:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2018-09-20 15:29:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-20 15:29:56,801 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 15:29:56,801 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 15:29:56,801 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 15:29:56,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1268109596, now seen corresponding path program 1 times [2018-09-20 15:29:56,803 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 15:29:56,803 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-20 15:29:56,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 15:29:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 15:29:56,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 15:29:56,941 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-20 15:29:56,961 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-20 15:29:56,962 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:56,970 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:56,981 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:56,982 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-20 15:29:57,005 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-20 15:29:57,009 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-20 15:29:57,010 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-20 15:29:57,014 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:57,017 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-20 15:29:57,018 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-20 15:29:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 15:29:57,294 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 15:29:57,312 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 15:29:57,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-20 15:29:57,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-20 15:29:57,315 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-20 15:29:57,315 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-20 15:29:57,316 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 9 states. [2018-09-20 15:29:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 15:29:58,359 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2018-09-20 15:29:58,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-20 15:29:58,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2018-09-20 15:29:58,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 15:29:58,362 INFO L225 Difference]: With dead ends: 44 [2018-09-20 15:29:58,362 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 15:29:58,364 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-09-20 15:29:58,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 15:29:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 15:29:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 15:29:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 15:29:58,365 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-09-20 15:29:58,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 15:29:58,365 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 15:29:58,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-20 15:29:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 15:29:58,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 15:29:58,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 15:29:58,615 INFO L426 ceAbstractionStarter]: For program point isnan_floatFINAL(line 55) no Hoare annotation was computed. [2018-09-20 15:29:58,615 INFO L429 ceAbstractionStarter]: At program point isnan_floatENTRY(line 55) the Hoare annotation is: true [2018-09-20 15:29:58,615 INFO L426 ceAbstractionStarter]: For program point isnan_floatEXIT(line 55) no Hoare annotation was computed. [2018-09-20 15:29:58,616 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:29:58,616 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:29:58,616 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:29:58,616 INFO L426 ceAbstractionStarter]: For program point L27(lines 27 29) no Hoare annotation was computed. [2018-09-20 15:29:58,616 INFO L426 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-09-20 15:29:58,616 INFO L426 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-09-20 15:29:58,617 INFO L426 ceAbstractionStarter]: For program point L19-2(line 19) no Hoare annotation was computed. [2018-09-20 15:29:58,617 INFO L426 ceAbstractionStarter]: For program point L48(line 48) no Hoare annotation was computed. [2018-09-20 15:29:58,617 INFO L426 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2018-09-20 15:29:58,617 INFO L426 ceAbstractionStarter]: For program point L32(lines 32 34) no Hoare annotation was computed. [2018-09-20 15:29:58,617 INFO L426 ceAbstractionStarter]: For program point round_floatEXIT(lines 11 52) no Hoare annotation was computed. [2018-09-20 15:29:58,620 INFO L426 ceAbstractionStarter]: For program point L24(lines 24 45) no Hoare annotation was computed. [2018-09-20 15:29:58,620 INFO L426 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-09-20 15:29:58,620 INFO L426 ceAbstractionStarter]: For program point L49-1(line 49) no Hoare annotation was computed. [2018-09-20 15:29:58,620 INFO L426 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-09-20 15:29:58,620 INFO L426 ceAbstractionStarter]: For program point L49-2(line 49) no Hoare annotation was computed. [2018-09-20 15:29:58,621 INFO L422 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (= round_float_~x |round_float_#in~x|) [2018-09-20 15:29:58,621 INFO L426 ceAbstractionStarter]: For program point L16-4(lines 16 20) no Hoare annotation was computed. [2018-09-20 15:29:58,621 INFO L429 ceAbstractionStarter]: At program point round_floatENTRY(lines 11 52) the Hoare annotation is: true [2018-09-20 15:29:58,621 INFO L426 ceAbstractionStarter]: For program point L25(lines 25 38) no Hoare annotation was computed. [2018-09-20 15:29:58,621 INFO L426 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-09-20 15:29:58,621 INFO L426 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-09-20 15:29:58,622 INFO L426 ceAbstractionStarter]: For program point L17-2(line 17) no Hoare annotation was computed. [2018-09-20 15:29:58,622 INFO L426 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2018-09-20 15:29:58,622 INFO L426 ceAbstractionStarter]: For program point L46(lines 46 50) no Hoare annotation was computed. [2018-09-20 15:29:58,622 INFO L426 ceAbstractionStarter]: For program point L46-2(lines 11 52) no Hoare annotation was computed. [2018-09-20 15:29:58,622 INFO L426 ceAbstractionStarter]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2018-09-20 15:29:58,625 INFO L426 ceAbstractionStarter]: For program point round_floatFINAL(lines 11 52) no Hoare annotation was computed. [2018-09-20 15:29:58,625 INFO L426 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-09-20 15:29:58,625 INFO L426 ceAbstractionStarter]: For program point L47(line 47) no Hoare annotation was computed. [2018-09-20 15:29:58,626 INFO L426 ceAbstractionStarter]: For program point L47-1(line 47) no Hoare annotation was computed. [2018-09-20 15:29:58,626 INFO L426 ceAbstractionStarter]: For program point L47-2(line 47) no Hoare annotation was computed. [2018-09-20 15:29:58,626 INFO L426 ceAbstractionStarter]: For program point L47-3(line 47) no Hoare annotation was computed. [2018-09-20 15:29:58,626 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 15:29:58,626 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 15:29:58,626 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 15:29:58,627 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 15:29:58,627 INFO L426 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-09-20 15:29:58,627 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 57 75) the Hoare annotation is: true [2018-09-20 15:29:58,627 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-09-20 15:29:58,627 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 57 75) no Hoare annotation was computed. [2018-09-20 15:29:58,630 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 57 75) no Hoare annotation was computed. [2018-09-20 15:29:58,630 INFO L426 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-09-20 15:29:58,630 INFO L422 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: (let ((.cse0 (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)))) (and (= main_~res~0 (fp.add RNE .cse0 .cse0)) (= .cse0 main_~x~0))) [2018-09-20 15:29:58,631 INFO L426 ceAbstractionStarter]: For program point L69-1(lines 69 72) no Hoare annotation was computed. [2018-09-20 15:29:58,631 INFO L422 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (= (fp.div RNE (_ +zero 8 24) (_ +zero 8 24)) main_~x~0) [2018-09-20 15:29:58,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 03:29:58 BoogieIcfgContainer [2018-09-20 15:29:58,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 15:29:58,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 15:29:58,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 15:29:58,648 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 15:29:58,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 03:29:52" (3/4) ... [2018-09-20 15:29:58,654 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 15:29:58,663 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-20 15:29:58,664 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 15:29:58,664 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure round_float [2018-09-20 15:29:58,664 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 15:29:58,671 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-20 15:29:58,672 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-09-20 15:29:58,672 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 15:29:58,707 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-09-20 15:29:58,737 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 15:29:58,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 15:29:58,739 INFO L168 Benchmark]: Toolchain (without parser) took 7465.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 951.8 MB in the beginning and 957.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 148.0 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:58,740 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 15:29:58,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.18 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:58,742 INFO L168 Benchmark]: Boogie Preprocessor took 49.06 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:58,743 INFO L168 Benchmark]: RCFGBuilder took 854.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:58,744 INFO L168 Benchmark]: TraceAbstraction took 6131.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 964.5 MB in the end (delta: 159.5 MB). Peak memory consumption was 159.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:58,745 INFO L168 Benchmark]: Witness Printer took 90.43 ms. Allocated memory is still 1.2 GB. Free memory was 964.5 MB in the beginning and 957.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-09-20 15:29:58,750 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.18 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.06 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 854.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -188.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6131.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 964.5 MB in the end (delta: 159.5 MB). Peak memory consumption was 159.5 MB. Max. memory is 11.5 GB. * Witness Printer took 90.43 ms. Allocated memory is still 1.2 GB. Free memory was 964.5 MB in the beginning and 957.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: 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: 16]: Loop Invariant Derived loop invariant: x == \old(x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 1 error locations. SAFE Result, 6.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 163 SDtfs, 74 SDslu, 640 SDs, 0 SdLazy, 187 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 34 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 119 ConstructedInterpolants, 16 QuantifiedInterpolants, 25014 SizeOfPredicates, 16 NumberOfNonLiveVariables, 250 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...