/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0610_true-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0610_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 95131fbb90a45f134b236581750b2f1a3cba4d8c --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0610_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 95131fbb90a45f134b236581750b2f1a3cba4d8c --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:20:19,249 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:20:19,252 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:20:19,268 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:20:19,270 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:20:19,271 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:20:19,273 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:20:19,275 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:20:19,278 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:20:19,282 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:20:19,286 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:20:19,286 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:20:19,287 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:20:19,290 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:20:19,293 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:20:19,298 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:20:19,299 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:20:19,303 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:20:19,308 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:20:19,310 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:20:19,313 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:20:19,315 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:20:19,319 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:20:19,322 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:20:19,323 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:20:19,324 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:20:19,325 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:20:19,325 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:20:19,328 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:20:19,330 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:20:19,331 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:20:19,332 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:20:19,332 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:20:19,332 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:20:19,333 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:20:19,337 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:20:19,339 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:20:19,364 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:20:19,365 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:20:19,365 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:20:19,366 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:20:19,366 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:20:19,366 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:20:19,367 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:20:19,367 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:20:19,367 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:20:19,367 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:20:19,367 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:20:19,368 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:20:19,368 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:20:19,368 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:20:19,368 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:20:19,368 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:20:19,368 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:20:19,369 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:20:19,369 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:20:19,369 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:20:19,369 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:20:19,369 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:20:19,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:20:19,370 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:20:19,370 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:20:19,370 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:20:19,370 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:20:19,370 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:20:19,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:20:19,371 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 -> 95131fbb90a45f134b236581750b2f1a3cba4d8c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:20:19,419 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:20:19,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:20:19,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:20:19,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:20:19,447 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:20:19,448 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0610_true-unreach-call.c [2018-09-21 18:20:19,832 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f5b63e7/6a021f19b9144218b770b864690d31dd/FLAGef581867c [2018-09-21 18:20:20,040 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:20:20,040 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0610_true-unreach-call.c [2018-09-21 18:20:20,052 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f5b63e7/6a021f19b9144218b770b864690d31dd/FLAGef581867c [2018-09-21 18:20:20,067 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29f5b63e7/6a021f19b9144218b770b864690d31dd [2018-09-21 18:20:20,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:20:20,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:20:20,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:20,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:20:20,082 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:20:20,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:20" (1/1) ... [2018-09-21 18:20:20,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a0a11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20, skipping insertion in model container [2018-09-21 18:20:20,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:20" (1/1) ... [2018-09-21 18:20:20,101 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:20:20,366 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:20,406 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:20:20,462 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:20,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20 WrapperNode [2018-09-21 18:20:20,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:20,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:20:20,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:20:20,533 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:20:20,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20" (1/1) ... [2018-09-21 18:20:20,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20" (1/1) ... [2018-09-21 18:20:20,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20" (1/1) ... [2018-09-21 18:20:20,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20" (1/1) ... [2018-09-21 18:20:20,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20" (1/1) ... [2018-09-21 18:20:20,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20" (1/1) ... [2018-09-21 18:20:20,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20" (1/1) ... [2018-09-21 18:20:20,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:20:20,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:20:20,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:20:20,613 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:20:20,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:20:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:20:20,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:20:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:20:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:20:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-09-21 18:20:20,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:20:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:20:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:20:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:20:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:20:20,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:20:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:20:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:20:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:20:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:20:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:20:20,783 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-09-21 18:20:20,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:20:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:20:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:20:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:20:20,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:20:21,446 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:20:21,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:21 BoogieIcfgContainer [2018-09-21 18:20:21,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:20:21,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:20:21,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:20:21,453 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:20:21,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:20:20" (1/3) ... [2018-09-21 18:20:21,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ef666e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:21, skipping insertion in model container [2018-09-21 18:20:21,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:20" (2/3) ... [2018-09-21 18:20:21,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ef666e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:21, skipping insertion in model container [2018-09-21 18:20:21,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:21" (3/3) ... [2018-09-21 18:20:21,458 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0610_true-unreach-call.c [2018-09-21 18:20:21,468 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:20:21,476 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:20:21,517 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:20:21,517 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:20:21,518 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:20:21,518 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:20:21,518 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:20:21,518 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:20:21,518 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:20:21,519 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:20:21,519 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:20:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2018-09-21 18:20:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:20:21,549 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:21,550 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] [2018-09-21 18:20:21,552 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:21,558 INFO L82 PathProgramCache]: Analyzing trace with hash 565183424, now seen corresponding path program 1 times [2018-09-21 18:20:21,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:20:21,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:20:21,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:21,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:21,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:20:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:20:21,747 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:20:21,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:20:21,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:20:21,769 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:20:21,772 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:20:21,775 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2018-09-21 18:20:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:20:21,797 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2018-09-21 18:20:21,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:20:21,799 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:20:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:20:21,812 INFO L225 Difference]: With dead ends: 74 [2018-09-21 18:20:21,813 INFO L226 Difference]: Without dead ends: 70 [2018-09-21 18:20:21,814 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:20:21,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-09-21 18:20:21,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-09-21 18:20:21,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-09-21 18:20:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2018-09-21 18:20:21,862 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 22 [2018-09-21 18:20:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:20:21,862 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2018-09-21 18:20:21,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:20:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2018-09-21 18:20:21,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:20:21,864 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:21,864 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:20:21,864 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:21,865 INFO L82 PathProgramCache]: Analyzing trace with hash -390279649, now seen corresponding path program 1 times [2018-09-21 18:20:21,865 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:20:21,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:20:21,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:21,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:21,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:20:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:20:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:20:22,003 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:20:22,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:20:22 BoogieIcfgContainer [2018-09-21 18:20:22,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:20:22,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:20:22,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:20:22,049 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:20:22,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:21" (3/4) ... [2018-09-21 18:20:22,054 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:20:22,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:20:22,055 INFO L168 Benchmark]: Toolchain (without parser) took 1983.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 951.8 MB in the beginning and 1.1 GB in the end (delta: -113.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:22,057 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:20:22,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.69 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 939.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:22,059 INFO L168 Benchmark]: Boogie Preprocessor took 80.10 ms. Allocated memory is still 1.0 GB. Free memory was 939.7 MB in the beginning and 934.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:22,060 INFO L168 Benchmark]: RCFGBuilder took 834.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 934.3 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:20:22,061 INFO L168 Benchmark]: TraceAbstraction took 600.55 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. [2018-09-21 18:20:22,061 INFO L168 Benchmark]: Witness Printer took 5.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:20:22,066 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 456.69 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 939.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 80.10 ms. Allocated memory is still 1.0 GB. Free memory was 939.7 MB in the beginning and 934.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 834.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 934.3 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 600.55 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 5.49 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: 132]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 15, overapproximation of someUnaryDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 65, overapproximation of someBinaryArithmeticFLOAToperation at line 68. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L32-L37] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L39-L44] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L46-L50] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L52-L54] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [\old(huge_atan)=26, \old(huge_floor)=22, \old(one_atan)=13, \old(pi)=23, \old(pi_o_2)=14, \old(pi_o_4)=19, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L127] float x = 0.0f / 0.0f; VAL [huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L128] CALL, EXPR atan_float(x) VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L57] float w, s1, s2, z; [L58] __int32_t ix, hx, id; VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L61] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=21, gf_u={17:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L62] FCALL gf_u.value = (x) VAL [\old(x)=21, gf_u={17:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L63] EXPR, FCALL gf_u.word VAL [\old(x)=21, gf_u={17:0}, gf_u.word=12, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L63] (hx) = gf_u.word VAL [\old(x)=21, gf_u={17:0}, gf_u.word=12, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L63] FCALL (hx) = gf_u.word VAL [(hx) = gf_u.word=20, \old(x)=21, gf_u={17:0}, gf_u.word=12, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L64] COND FALSE !(0) VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L65] ix = hx & 0x7fffffff VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L66] COND TRUE ix >= 0x50800000 VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L67] COND TRUE ((ix) > 0x7f800000L) [L68] RET return x + x; VAL [\old(x)=21, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, hx=12, ix=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L128] EXPR atan_float(x) VAL [atan_float(x)=18, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=21] [L128] float res = atan_float(x); [L131] CALL, EXPR isnan_float(res) VAL [\old(x)=18, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L15] RET return x != x; VAL [\old(x)=18, \result=0, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, x=18] [L131] EXPR isnan_float(res) VAL [huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, isnan_float(res)=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=18, x=21] [L131] COND TRUE !isnan_float(res) [L132] __VERIFIER_error() VAL [huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=18, x=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 74 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 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=74occurred 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 0.1.23-5eb3fea [2018-09-21 18:20:24,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:20:24,436 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:20:24,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:20:24,449 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:20:24,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:20:24,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:20:24,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:20:24,455 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:20:24,456 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:20:24,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:20:24,457 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:20:24,458 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:20:24,460 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:20:24,461 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:20:24,462 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:20:24,463 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:20:24,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:20:24,467 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:20:24,468 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:20:24,470 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:20:24,471 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:20:24,474 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:20:24,474 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:20:24,474 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:20:24,475 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:20:24,477 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:20:24,477 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:20:24,478 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:20:24,480 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:20:24,480 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:20:24,481 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:20:24,481 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:20:24,481 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:20:24,483 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:20:24,483 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:20:24,484 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:20:24,510 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:20:24,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:20:24,514 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:20:24,515 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:20:24,515 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:20:24,517 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:20:24,517 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:20:24,518 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:20:24,518 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:20:24,518 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:20:24,518 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:20:24,519 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:20:24,520 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:20:24,520 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:20:24,521 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:20:24,521 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:20:24,521 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:20:24,521 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:20:24,521 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:20:24,523 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:20:24,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:20:24,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:20:24,524 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:20:24,524 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:20:24,524 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:20:24,525 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:20:24,527 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:20:24,527 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:20:24,527 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:20:24,528 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:20:24,528 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:20:24,528 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 -> 95131fbb90a45f134b236581750b2f1a3cba4d8c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:20:24,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:20:24,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:20:24,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:20:24,630 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:20:24,630 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:20:24,631 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0610_true-unreach-call.c [2018-09-21 18:20:24,961 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a27726e/e84374400701452ba82ae3c8aa0bc0f7/FLAGb9feb9f00 [2018-09-21 18:20:25,138 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:20:25,139 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0610_true-unreach-call.c [2018-09-21 18:20:25,148 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a27726e/e84374400701452ba82ae3c8aa0bc0f7/FLAGb9feb9f00 [2018-09-21 18:20:25,164 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a27726e/e84374400701452ba82ae3c8aa0bc0f7 [2018-09-21 18:20:25,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:20:25,171 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:20:25,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:25,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:20:25,179 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:20:25,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:25" (1/1) ... [2018-09-21 18:20:25,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64be50d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25, skipping insertion in model container [2018-09-21 18:20:25,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:20:25" (1/1) ... [2018-09-21 18:20:25,195 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:20:25,529 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:25,563 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:20:25,598 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:20:25,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25 WrapperNode [2018-09-21 18:20:25,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:20:25,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:20:25,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:20:25,647 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:20:25,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25" (1/1) ... [2018-09-21 18:20:25,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25" (1/1) ... [2018-09-21 18:20:25,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25" (1/1) ... [2018-09-21 18:20:25,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25" (1/1) ... [2018-09-21 18:20:25,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25" (1/1) ... [2018-09-21 18:20:25,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25" (1/1) ... [2018-09-21 18:20:25,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25" (1/1) ... [2018-09-21 18:20:25,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:20:25,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:20:25,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:20:25,714 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:20:25,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:20:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:20:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:20:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2018-09-21 18:20:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2018-09-21 18:20:25,935 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2018-09-21 18:20:25,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:20:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:20:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-21 18:20:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2018-09-21 18:20:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2018-09-21 18:20:25,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:20:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-09-21 18:20:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:20:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:20:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:20:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-09-21 18:20:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2018-09-21 18:20:25,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:20:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:20:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:20:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-09-21 18:20:25,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:20:28,317 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:28,329 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:31,313 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:33,531 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:20:41,342 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:20:41,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:41 BoogieIcfgContainer [2018-09-21 18:20:41,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:20:41,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:20:41,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:20:41,348 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:20:41,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:20:25" (1/3) ... [2018-09-21 18:20:41,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7927745a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:41, skipping insertion in model container [2018-09-21 18:20:41,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:20:25" (2/3) ... [2018-09-21 18:20:41,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7927745a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:20:41, skipping insertion in model container [2018-09-21 18:20:41,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:41" (3/3) ... [2018-09-21 18:20:41,358 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0610_true-unreach-call.c [2018-09-21 18:20:41,366 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:20:41,375 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:20:41,412 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:20:41,413 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:20:41,415 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:20:41,415 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:20:41,415 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:20:41,415 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:20:41,415 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:20:41,416 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:20:41,416 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:20:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2018-09-21 18:20:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:20:41,462 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:41,463 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:20:41,466 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:41,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1430343675, now seen corresponding path program 1 times [2018-09-21 18:20:41,476 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:20:41,476 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:20:41,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:20:41,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:20:41,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:20:41,617 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:20:41,635 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:20:41,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:20:41,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:20:41,657 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:20:41,658 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:20:41,661 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2018-09-21 18:20:41,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:20:41,685 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2018-09-21 18:20:41,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:20:41,687 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:20:41,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:20:41,700 INFO L225 Difference]: With dead ends: 73 [2018-09-21 18:20:41,700 INFO L226 Difference]: Without dead ends: 69 [2018-09-21 18:20:41,702 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 [2018-09-21 18:20:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-21 18:20:41,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-21 18:20:41,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-21 18:20:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2018-09-21 18:20:41,746 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 21 [2018-09-21 18:20:41,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:20:41,746 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2018-09-21 18:20:41,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:20:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2018-09-21 18:20:41,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-21 18:20:41,748 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:41,748 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:20:41,749 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:41,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1099751881, now seen corresponding path program 1 times [2018-09-21 18:20:41,750 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:20:41,750 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:20:41,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:20:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:20:41,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:20:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:20:42,885 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:20:42,899 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:20:42,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:20:42,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:20:42,901 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:20:42,902 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:20:42,902 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 9 states. [2018-09-21 18:20:43,631 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-21 18:20:56,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:20:56,305 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2018-09-21 18:20:56,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:20:56,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-21 18:20:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:20:56,321 INFO L225 Difference]: With dead ends: 77 [2018-09-21 18:20:56,322 INFO L226 Difference]: Without dead ends: 72 [2018-09-21 18:20:56,323 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 [2018-09-21 18:20:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-09-21 18:20:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2018-09-21 18:20:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-21 18:20:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2018-09-21 18:20:56,341 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 30 [2018-09-21 18:20:56,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:20:56,341 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2018-09-21 18:20:56,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:20:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2018-09-21 18:20:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-21 18:20:56,343 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:20:56,344 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:20:56,344 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:20:56,344 INFO L82 PathProgramCache]: Analyzing trace with hash 102629660, now seen corresponding path program 1 times [2018-09-21 18:20:56,346 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:20:56,346 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:20:56,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:20:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:20:56,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:20:56,688 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:20:56,704 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:20:56,705 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:20:56,731 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:20:56,809 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:20:56,810 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:20:56,890 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:20:56,898 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:20:56,899 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:20:56,927 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:20:56,932 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:20:56,933 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:20:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:20:57,204 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:20:57,222 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:20:57,222 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:20:57,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:20:57,223 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:20:57,226 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:20:57,227 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 10 states. [2018-09-21 18:21:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:10,388 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-09-21 18:21:10,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-21 18:21:10,438 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-09-21 18:21:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:10,440 INFO L225 Difference]: With dead ends: 75 [2018-09-21 18:21:10,440 INFO L226 Difference]: Without dead ends: 71 [2018-09-21 18:21:10,442 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-09-21 18:21:10,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-21 18:21:10,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2018-09-21 18:21:10,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-21 18:21:10,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2018-09-21 18:21:10,451 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 31 [2018-09-21 18:21:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:10,451 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2018-09-21 18:21:10,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:21:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2018-09-21 18:21:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-21 18:21:10,453 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:10,453 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] [2018-09-21 18:21:10,454 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:10,454 INFO L82 PathProgramCache]: Analyzing trace with hash 88207686, now seen corresponding path program 1 times [2018-09-21 18:21:10,454 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:10,455 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:21:10,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:10,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:10,671 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:21:10,677 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:21:10,678 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:10,682 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:10,695 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:10,695 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:21:10,731 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:21:10,751 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:21:10,751 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:10,762 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:10,765 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:10,765 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:21:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:21:10,907 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:10,919 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:10,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:21:10,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:21:10,920 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:21:10,921 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:21:10,921 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 9 states. [2018-09-21 18:21:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:22,108 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2018-09-21 18:21:22,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:21:22,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-09-21 18:21:22,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:22,161 INFO L225 Difference]: With dead ends: 71 [2018-09-21 18:21:22,161 INFO L226 Difference]: Without dead ends: 69 [2018-09-21 18:21:22,162 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:21:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-21 18:21:22,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2018-09-21 18:21:22,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-21 18:21:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-09-21 18:21:22,170 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 32 [2018-09-21 18:21:22,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:22,170 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-09-21 18:21:22,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:21:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-09-21 18:21:22,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:21:22,173 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:22,173 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] [2018-09-21 18:21:22,173 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:22,173 INFO L82 PathProgramCache]: Analyzing trace with hash -653680444, now seen corresponding path program 1 times [2018-09-21 18:21:22,174 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:22,174 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:21:22,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:23,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:23,311 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:21:23,315 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:21:23,316 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:23,320 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:23,334 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:23,334 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:21:23,357 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:21:23,363 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:21:23,364 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:23,367 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:23,370 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:23,371 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:21:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:21:23,516 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:23,544 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:23,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:21:23,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:21:23,545 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:21:23,545 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:21:23,546 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 9 states. [2018-09-21 18:21:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:36,235 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2018-09-21 18:21:36,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-21 18:21:36,296 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-09-21 18:21:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:36,297 INFO L225 Difference]: With dead ends: 74 [2018-09-21 18:21:36,297 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:21:36,298 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:21:36,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:21:36,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:21:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:21:36,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-09-21 18:21:36,307 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 34 [2018-09-21 18:21:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:36,307 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-09-21 18:21:36,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:21:36,308 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-09-21 18:21:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-21 18:21:36,310 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:36,310 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:21:36,311 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2024469207, now seen corresponding path program 1 times [2018-09-21 18:21:36,312 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:36,312 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:21:36,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:37,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:21:37,712 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:37,748 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:37,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-21 18:21:37,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-21 18:21:37,751 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-21 18:21:37,751 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-21 18:21:37,751 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 3 states. [2018-09-21 18:21:39,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:39,834 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-09-21 18:21:39,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-21 18:21:39,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-09-21 18:21:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:39,867 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:21:39,867 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:21:39,868 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-21 18:21:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:21:39,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:21:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:21:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-21 18:21:39,873 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-09-21 18:21:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:39,874 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-21 18:21:39,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-21 18:21:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-21 18:21:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-21 18:21:39,875 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:21:39,875 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:21:39,876 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:21:39,876 INFO L82 PathProgramCache]: Analyzing trace with hash 351023570, now seen corresponding path program 1 times [2018-09-21 18:21:39,877 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:21:39,877 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:21:39,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:21:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:21:41,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:21:41,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-09-21 18:21:41,337 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-21 18:21:41,338 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:41,342 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:41,353 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:41,354 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-09-21 18:21:41,407 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-09-21 18:21:41,416 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-09-21 18:21:41,431 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:21:41,441 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:41,445 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:21:41,445 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-09-21 18:21:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:21:41,629 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:21:41,670 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:21:41,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:21:41,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:21:41,672 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:21:41,672 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:21:41,672 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 9 states. [2018-09-21 18:21:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:21:48,914 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-09-21 18:21:48,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-21 18:21:48,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2018-09-21 18:21:48,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:21:48,916 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:21:48,916 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:21:48,917 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:21:48,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:21:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:21:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:21:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:21:48,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2018-09-21 18:21:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:21:48,921 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:21:48,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:21:48,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:21:48,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:21:48,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:21:48 BoogieIcfgContainer [2018-09-21 18:21:48,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:21:48,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:21:48,926 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:21:48,927 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:21:48,927 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:20:41" (3/4) ... [2018-09-21 18:21:48,930 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:21:48,939 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2018-09-21 18:21:48,939 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:21:48,940 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fabs_float [2018-09-21 18:21:48,940 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:21:48,940 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure atan_float [2018-09-21 18:21:48,950 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-09-21 18:21:48,951 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-09-21 18:21:48,952 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-09-21 18:21:49,042 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:21:49,043 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:21:49,044 INFO L168 Benchmark]: Toolchain (without parser) took 83875.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 953.2 MB in the beginning and 1.2 GB in the end (delta: -200.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:21:49,048 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:21:49,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.94 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:21:49,051 INFO L168 Benchmark]: Boogie Preprocessor took 67.09 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:21:49,051 INFO L168 Benchmark]: RCFGBuilder took 15628.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:21:49,054 INFO L168 Benchmark]: TraceAbstraction took 67582.27 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -32.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:21:49,055 INFO L168 Benchmark]: Witness Printer took 116.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-09-21 18:21:49,056 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 473.94 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 67.09 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 15628.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 67582.27 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -32.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Witness Printer took 116.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 132]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 73 locations, 1 error locations. SAFE Result, 67.5s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 60.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 426 SDtfs, 237 SDslu, 1767 SDs, 0 SdLazy, 491 SolverSat, 25 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 54.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 3.7s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 263 ConstructedInterpolants, 31 QuantifiedInterpolants, 49918 SizeOfPredicates, 37 NumberOfNonLiveVariables, 723 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...