./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-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 064927d7c1e3d8158c8524deee46f65d988c7936 ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-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 064927d7c1e3d8158c8524deee46f65d988c7936 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:04:58,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:04:58,439 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:04:58,459 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:04:58,460 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:04:58,462 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:04:58,463 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:04:58,465 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:04:58,466 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:04:58,467 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:04:58,468 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:04:58,468 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:04:58,469 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:04:58,470 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:04:58,471 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:04:58,472 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:04:58,473 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:04:58,475 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:04:58,477 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:04:58,479 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:04:58,480 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:04:58,481 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:04:58,484 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:04:58,484 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:04:58,484 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:04:58,485 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:04:58,487 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:04:58,487 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:04:58,488 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:04:58,489 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:04:58,490 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:04:58,490 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:04:58,491 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:04:58,491 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:04:58,492 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:04:58,493 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:04:58,493 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:04:58,508 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:04:58,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:04:58,509 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:04:58,509 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:04:58,510 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:04:58,510 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:04:58,510 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:04:58,510 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:04:58,511 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:04:58,511 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:04:58,511 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:04:58,511 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:04:58,511 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:04:58,511 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:04:58,512 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:04:58,512 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:04:58,512 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:04:58,512 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:04:58,512 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:04:58,512 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:04:58,513 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:04:58,513 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:04:58,513 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:04:58,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:04:58,513 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:04:58,514 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:04:58,514 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:04:58,514 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:04:58,514 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:04:58,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:04:58,514 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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-11-28 18:04:58,549 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:04:58,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:04:58,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:04:58,567 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:04:58,568 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:04:58,568 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-11-28 18:04:58,635 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c2fe273/4b6687f906214fa19e4e0e4abb9a7640/FLAGf4976bc19 [2018-11-28 18:04:59,131 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:04:59,132 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-11-28 18:04:59,140 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c2fe273/4b6687f906214fa19e4e0e4abb9a7640/FLAGf4976bc19 [2018-11-28 18:04:59,489 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71c2fe273/4b6687f906214fa19e4e0e4abb9a7640 [2018-11-28 18:04:59,493 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:04:59,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:04:59,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:59,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:04:59,500 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:04:59,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcdd59a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59, skipping insertion in model container [2018-11-28 18:04:59,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:04:59,540 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:04:59,809 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:59,815 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:04:59,874 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:04:59,911 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:04:59,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59 WrapperNode [2018-11-28 18:04:59,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:04:59,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:59,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:04:59,912 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:04:59,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:04:59,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:04:59,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:04:59,950 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:04:59,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... [2018-11-28 18:04:59,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:04:59,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:04:59,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:04:59,995 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:04:59,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:00,139 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 18:05:00,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 18:05:00,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:00,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:00,140 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 18:05:00,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 18:05:00,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:00,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:05:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:00,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:00,141 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-28 18:05:00,141 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-28 18:05:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:05:00,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:00,764 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:00,764 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 18:05:00,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:00 BoogieIcfgContainer [2018-11-28 18:05:00,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:00,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:00,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:00,770 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:00,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:04:59" (1/3) ... [2018-11-28 18:05:00,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c7388b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:00, skipping insertion in model container [2018-11-28 18:05:00,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:04:59" (2/3) ... [2018-11-28 18:05:00,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c7388b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:00, skipping insertion in model container [2018-11-28 18:05:00,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:00" (3/3) ... [2018-11-28 18:05:00,774 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:00,788 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:00,798 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:00,817 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:00,855 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:00,856 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:00,856 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:00,856 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:00,857 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:00,857 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:00,857 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:00,857 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:00,857 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:00,884 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-28 18:05:00,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:05:00,893 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:00,894 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:00,899 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:00,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:00,909 INFO L82 PathProgramCache]: Analyzing trace with hash 2125018936, now seen corresponding path program 1 times [2018-11-28 18:05:00,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:00,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:00,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:00,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:00,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:01,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:01,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:01,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:01,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:01,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:01,121 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 18:05:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:01,147 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-28 18:05:01,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:01,149 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 18:05:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:01,160 INFO L225 Difference]: With dead ends: 79 [2018-11-28 18:05:01,160 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 18:05:01,164 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 18:05:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 18:05:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:05:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 18:05:01,213 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-28 18:05:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:01,213 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 18:05:01,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 18:05:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:05:01,216 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:01,216 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:01,217 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:01,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:01,218 INFO L82 PathProgramCache]: Analyzing trace with hash 2099930979, now seen corresponding path program 1 times [2018-11-28 18:05:01,218 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:01,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:01,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:01,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:01,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:01,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:01,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:01,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:01,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:01,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:01,491 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 18:05:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:01,685 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-28 18:05:01,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:01,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 18:05:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:01,690 INFO L225 Difference]: With dead ends: 59 [2018-11-28 18:05:01,691 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:05:01,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:05:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 18:05:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 18:05:01,708 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-28 18:05:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:01,710 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 18:05:01,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 18:05:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:05:01,713 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:01,713 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:01,713 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:01,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:01,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2011933537, now seen corresponding path program 1 times [2018-11-28 18:05:01,714 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:01,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:01,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:01,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:01,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:01,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:01,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:01,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:01,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:01,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:01,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:01,875 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-28 18:05:01,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:01,935 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-28 18:05:01,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:01,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 18:05:01,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:01,938 INFO L225 Difference]: With dead ends: 63 [2018-11-28 18:05:01,938 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 18:05:01,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:01,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 18:05:01,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 18:05:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 18:05:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 18:05:01,948 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-28 18:05:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:01,949 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 18:05:01,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 18:05:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 18:05:01,950 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:01,950 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:01,950 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:01,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:01,952 INFO L82 PathProgramCache]: Analyzing trace with hash 486082400, now seen corresponding path program 1 times [2018-11-28 18:05:01,952 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:01,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:01,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:01,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:01,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:02,060 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:02,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:02 BoogieIcfgContainer [2018-11-28 18:05:02,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:02,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:02,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:02,098 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:02,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:00" (3/4) ... [2018-11-28 18:05:02,103 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:05:02,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:02,104 INFO L168 Benchmark]: Toolchain (without parser) took 2611.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -135.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,107 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:02,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.34 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.04 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:02,109 INFO L168 Benchmark]: Boogie Preprocessor took 46.24 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,110 INFO L168 Benchmark]: RCFGBuilder took 770.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,111 INFO L168 Benchmark]: TraceAbstraction took 1331.28 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: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:02,112 INFO L168 Benchmark]: Witness Printer took 5.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:02,117 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 416.34 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.04 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.24 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 770.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -195.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1331.28 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: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. * Witness Printer took 5.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [y=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4293918727, \old(y)=0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918727] [L19] __uint32_t msw, lsw; VAL [\old(x)=4293918727, x=4293918727] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; VAL [\old(x)=4293918727, \result=0, lsw=1, msw=4293918721, x=4293918727] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4293918727, \old(y)=0, __fpclassify_double(x)=0, x=4293918727, y=0] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; VAL [\old(x)=4293918727, \old(y)=0, \result=0, x=4293918727, y=0] [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0, x=4293918727, y=0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0, res == -0.0 && __signbit_double(res) == 1=0, x=4293918727, y=0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0, x=4293918727, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 18:05:04,529 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:04,531 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:04,544 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:04,544 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:04,545 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:04,547 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:04,549 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:04,550 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:04,551 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:04,552 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:04,552 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:04,554 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:04,555 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:04,557 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:04,557 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:04,559 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:04,561 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:04,563 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:04,565 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:04,567 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:04,570 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:04,572 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:04,575 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:04,577 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:04,578 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:04,579 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:04,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:04,585 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:04,586 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:04,586 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:04,589 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:04,589 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:04,589 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:04,593 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:04,594 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:04,596 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:05:04,625 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:04,626 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:04,627 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:04,628 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:04,629 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:04,630 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:04,630 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:04,630 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:04,630 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:04,631 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:04,631 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:04,632 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:04,632 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:04,632 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:04,632 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:05:04,633 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:05:04,633 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:04,633 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:04,634 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:04,635 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:04,635 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:04,636 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:04,636 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:04,636 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:04,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:04,636 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:04,637 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:04,638 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:04,638 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:05:04,638 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:04,638 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:05:04,639 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:05:04,639 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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-11-28 18:05:04,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:04,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:04,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:04,722 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:04,723 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:04,723 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:04,790 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bd4e842/301b279e16f44d7899ff5661aeb60a59/FLAG1a9887fd8 [2018-11-28 18:05:05,265 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:05,266 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:05,275 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bd4e842/301b279e16f44d7899ff5661aeb60a59/FLAG1a9887fd8 [2018-11-28 18:05:05,615 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bd4e842/301b279e16f44d7899ff5661aeb60a59 [2018-11-28 18:05:05,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:05,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:05,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:05,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:05,629 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:05,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:05" (1/1) ... [2018-11-28 18:05:05,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d20bde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:05, skipping insertion in model container [2018-11-28 18:05:05,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:05" (1/1) ... [2018-11-28 18:05:05,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:05,672 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:05,918 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:05,924 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:05,961 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:06,004 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:06,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06 WrapperNode [2018-11-28 18:05:06,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:06,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:06,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:06,006 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:06,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:06,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:06,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:06,040 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:06,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... [2018-11-28 18:05:06,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:06,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:06,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:06,102 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:06,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 18:05:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 18:05:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 18:05:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 18:05:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 18:05:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:05:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:05:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-28 18:05:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-28 18:05:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:05:06,458 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:06,611 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:05:06,846 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:06,846 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 18:05:06,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:06 BoogieIcfgContainer [2018-11-28 18:05:06,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:06,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:06,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:06,851 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:06,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:05" (1/3) ... [2018-11-28 18:05:06,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57663cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:06, skipping insertion in model container [2018-11-28 18:05:06,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:06" (2/3) ... [2018-11-28 18:05:06,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57663cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:06, skipping insertion in model container [2018-11-28 18:05:06,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:06" (3/3) ... [2018-11-28 18:05:06,855 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-11-28 18:05:06,865 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:06,873 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:06,892 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:06,926 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:06,927 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:06,927 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:06,927 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:06,928 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:06,928 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:06,928 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:06,928 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:06,928 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:06,948 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-28 18:05:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 18:05:06,956 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:06,957 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:06,959 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:06,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:06,966 INFO L82 PathProgramCache]: Analyzing trace with hash -397395125, now seen corresponding path program 1 times [2018-11-28 18:05:06,971 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:06,972 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:06,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:07,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:07,135 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:07,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:07,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:07,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:07,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:07,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:07,179 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-28 18:05:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:07,208 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-28 18:05:07,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:07,210 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-28 18:05:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:07,222 INFO L225 Difference]: With dead ends: 75 [2018-11-28 18:05:07,222 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 18:05:07,227 INFO L631 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 [2018-11-28 18:05:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 18:05:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 18:05:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 18:05:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 18:05:07,277 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-28 18:05:07,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:07,277 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 18:05:07,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:07,278 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 18:05:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 18:05:07,280 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:07,280 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:07,280 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:07,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:07,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2145002868, now seen corresponding path program 1 times [2018-11-28 18:05:07,282 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:07,282 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:07,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:07,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:07,449 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:07,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:07,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:07,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:07,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:07,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:07,464 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-28 18:05:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:07,577 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-28 18:05:07,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:07,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 18:05:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:07,583 INFO L225 Difference]: With dead ends: 56 [2018-11-28 18:05:07,584 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:05:07,587 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:05:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:05:07,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-28 18:05:07,612 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-28 18:05:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:07,613 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-28 18:05:07,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-28 18:05:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:05:07,617 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:07,618 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:07,619 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:07,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:07,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1859452024, now seen corresponding path program 1 times [2018-11-28 18:05:07,624 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:07,626 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:05:07,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:07,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:08,379 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:08,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:08,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:08,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:08,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:08,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:08,396 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-28 18:05:09,139 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-11-28 18:05:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:09,923 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-11-28 18:05:09,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:09,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-28 18:05:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:09,927 INFO L225 Difference]: With dead ends: 63 [2018-11-28 18:05:09,927 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 18:05:09,928 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 18:05:09,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 18:05:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 18:05:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 18:05:09,937 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-11-28 18:05:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:09,938 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 18:05:09,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 18:05:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 18:05:09,940 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:09,940 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:09,940 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:09,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:09,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1911602824, now seen corresponding path program 1 times [2018-11-28 18:05:09,942 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:09,942 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 [2018-11-28 18:05:09,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:10,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:10,111 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:10,128 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:10,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:10,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:10,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:10,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:10,129 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-11-28 18:05:10,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:10,220 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-11-28 18:05:10,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:10,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-28 18:05:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:10,226 INFO L225 Difference]: With dead ends: 61 [2018-11-28 18:05:10,227 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 18:05:10,228 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 18:05:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-28 18:05:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 18:05:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 18:05:10,255 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-11-28 18:05:10,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:10,256 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 18:05:10,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:10,256 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 18:05:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:05:10,258 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:10,258 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:10,259 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:10,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2064132100, now seen corresponding path program 1 times [2018-11-28 18:05:10,263 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:10,263 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:10,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:10,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:10,782 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:10,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:10,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:10,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:10,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:10,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:10,793 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-11-28 18:05:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:12,372 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-28 18:05:12,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:12,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-28 18:05:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:12,375 INFO L225 Difference]: With dead ends: 62 [2018-11-28 18:05:12,375 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 18:05:12,376 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:12,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 18:05:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-28 18:05:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 18:05:12,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-28 18:05:12,386 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-11-28 18:05:12,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:12,386 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-28 18:05:12,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:12,387 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-28 18:05:12,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 18:05:12,389 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:12,389 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:12,389 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:12,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:12,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1438845801, now seen corresponding path program 1 times [2018-11-28 18:05:12,390 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:12,390 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:12,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:12,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:05:12,508 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:12,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:12,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:12,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:12,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:12,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:12,522 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-28 18:05:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:12,584 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-28 18:05:12,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:12,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 18:05:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:12,587 INFO L225 Difference]: With dead ends: 58 [2018-11-28 18:05:12,587 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 18:05:12,587 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 18:05:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 18:05:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 18:05:12,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-11-28 18:05:12,596 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-11-28 18:05:12,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:12,597 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-11-28 18:05:12,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:12,597 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-11-28 18:05:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 18:05:12,599 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:12,599 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:12,600 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:12,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:12,600 INFO L82 PathProgramCache]: Analyzing trace with hash 394703345, now seen corresponding path program 1 times [2018-11-28 18:05:12,600 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:12,600 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:12,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:12,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 18:05:12,965 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:12,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:12,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:12,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:12,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:12,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:12,982 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-11-28 18:05:13,703 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-11-28 18:05:14,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:14,389 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-11-28 18:05:14,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:14,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-28 18:05:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:14,392 INFO L225 Difference]: With dead ends: 63 [2018-11-28 18:05:14,392 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 18:05:14,393 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:14,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 18:05:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 18:05:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 18:05:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-28 18:05:14,401 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-11-28 18:05:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:14,403 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-28 18:05:14,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:14,403 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-28 18:05:14,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:14,405 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:14,405 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:14,405 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:14,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:14,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1599971557, now seen corresponding path program 1 times [2018-11-28 18:05:14,406 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:14,406 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:14,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:14,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 18:05:14,548 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:14,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:14,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 18:05:14,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 18:05:14,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 18:05:14,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:14,560 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-11-28 18:05:14,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:14,674 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-11-28 18:05:14,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 18:05:14,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-28 18:05:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:14,677 INFO L225 Difference]: With dead ends: 59 [2018-11-28 18:05:14,677 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:05:14,678 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 18:05:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:05:14,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-11-28 18:05:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-28 18:05:14,685 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-11-28 18:05:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:14,686 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-28 18:05:14,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 18:05:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-28 18:05:14,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:14,689 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:14,689 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:14,689 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:14,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:14,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1200719566, now seen corresponding path program 1 times [2018-11-28 18:05:14,691 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:14,691 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:14,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:14,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:14,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 18:05:14,922 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:14,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:14,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 18:05:14,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 18:05:14,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 18:05:14,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 18:05:14,940 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-11-28 18:05:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:15,143 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-11-28 18:05:15,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 18:05:15,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-28 18:05:15,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:15,150 INFO L225 Difference]: With dead ends: 57 [2018-11-28 18:05:15,150 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:05:15,151 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:05:15,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:05:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:05:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:05:15,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-11-28 18:05:15,158 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-11-28 18:05:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:15,158 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-11-28 18:05:15,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 18:05:15,158 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-11-28 18:05:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:05:15,161 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:15,161 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:15,161 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:15,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:15,163 INFO L82 PathProgramCache]: Analyzing trace with hash 391372940, now seen corresponding path program 1 times [2018-11-28 18:05:15,163 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:15,163 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:15,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:15,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 18:05:15,427 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:15,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:15,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:15,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:15,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:15,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:15,440 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-11-28 18:05:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:15,993 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-11-28 18:05:15,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:15,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-28 18:05:15,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:15,995 INFO L225 Difference]: With dead ends: 48 [2018-11-28 18:05:15,998 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 18:05:15,998 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:05:15,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 18:05:16,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-28 18:05:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 18:05:16,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-11-28 18:05:16,005 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-11-28 18:05:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:16,006 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-11-28 18:05:16,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-11-28 18:05:16,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 18:05:16,008 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:16,008 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:16,009 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:16,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:16,009 INFO L82 PathProgramCache]: Analyzing trace with hash -477473555, now seen corresponding path program 1 times [2018-11-28 18:05:16,010 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:16,010 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:16,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:16,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 18:05:16,439 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:16,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:16,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:05:16,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:05:16,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:05:16,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:05:16,452 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-11-28 18:05:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:17,494 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-11-28 18:05:17,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:05:17,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-11-28 18:05:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:17,497 INFO L225 Difference]: With dead ends: 62 [2018-11-28 18:05:17,497 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 18:05:17,498 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:05:17,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 18:05:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 18:05:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 18:05:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-28 18:05:17,504 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-11-28 18:05:17,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:17,504 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-28 18:05:17,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:05:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-28 18:05:17,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 18:05:17,507 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:17,507 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:17,507 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:17,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:17,507 INFO L82 PathProgramCache]: Analyzing trace with hash -25386389, now seen corresponding path program 1 times [2018-11-28 18:05:17,509 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:17,509 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:17,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:17,904 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:17,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:17 BoogieIcfgContainer [2018-11-28 18:05:17,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:17,967 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:17,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:17,967 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:17,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:06" (3/4) ... [2018-11-28 18:05:17,977 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:05:18,109 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:05:18,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:18,110 INFO L168 Benchmark]: Toolchain (without parser) took 12489.61 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 235.9 MB). Free memory was 951.3 MB in the beginning and 783.0 MB in the end (delta: 168.4 MB). Peak memory consumption was 404.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:18,111 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:18,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.05 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:18,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.93 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:18,115 INFO L168 Benchmark]: Boogie Preprocessor took 62.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Free memory was 935.2 MB in the beginning and 1.0 GB in the end (delta: -81.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:18,116 INFO L168 Benchmark]: RCFGBuilder took 744.71 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 205.0 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -183.0 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:18,117 INFO L168 Benchmark]: TraceAbstraction took 11118.66 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 783.0 MB in the end (delta: 416.4 MB). Peak memory consumption was 416.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:18,118 INFO L168 Benchmark]: Witness Printer took 142.60 ms. Allocated memory is still 1.3 GB. Free memory is still 783.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:18,126 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 382.05 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.93 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 62.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Free memory was 935.2 MB in the beginning and 1.0 GB in the end (delta: -81.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 744.71 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 205.0 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -183.0 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11118.66 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 783.0 MB in the end (delta: 416.4 MB). Peak memory consumption was 416.4 MB. Max. memory is 11.5 GB. * Witness Printer took 142.60 ms. Allocated memory is still 1.3 GB. Free memory is still 783.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [x=0.0, y=0.0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L46] COND FALSE !(__fpclassify_double(x) == 0) [L48] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L48] RET, EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] EXPR x < y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L51] return x < y ? x : y; [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0.0, x=0.0, y=0.0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] CALL, EXPR __signbit_double(res) VAL [\old(x)=0.0] [L55] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, msw=0, x=0.0] [L79] RET, EXPR __signbit_double(res) VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=0, x=0.0, y=0.0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 11.0s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 6.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 452 SDtfs, 177 SDslu, 1317 SDs, 0 SdLazy, 513 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, 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: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 294 ConstructedInterpolants, 36 QuantifiedInterpolants, 34701 SizeOfPredicates, 23 NumberOfNonLiveVariables, 957 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...