./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_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 36a0a55241cede481b157c1ab9f348d708a5b166 .................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_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 36a0a55241cede481b157c1ab9f348d708a5b166 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-2e94e6a [2018-12-31 04:07:26,695 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 04:07:26,697 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 04:07:26,709 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 04:07:26,710 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 04:07:26,711 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 04:07:26,713 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 04:07:26,715 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 04:07:26,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 04:07:26,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 04:07:26,719 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 04:07:26,719 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 04:07:26,721 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 04:07:26,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 04:07:26,725 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 04:07:26,727 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 04:07:26,728 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 04:07:26,730 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 04:07:26,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 04:07:26,741 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 04:07:26,742 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 04:07:26,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 04:07:26,753 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 04:07:26,753 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:07:26,753 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:07:26,754 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:07:26,755 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:07:26,756 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:07:26,757 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:07:26,758 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:07:26,758 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:07:26,759 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:07:26,759 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:07:26,759 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:07:26,761 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:07:26,762 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:07:26,762 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 04:07:26,787 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:07:26,790 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:07:26,791 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:07:26,791 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:07:26,792 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:07:26,793 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:07:26,793 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:07:26,794 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 04:07:26,794 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:07:26,794 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:07:26,794 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:07:26,794 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:07:26,794 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:07:26,796 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:07:26,796 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:07:26,796 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:07:26,796 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:07:26,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:07:26,797 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:07:26,797 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:07:26,797 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:07:26,797 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:07:26,798 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:07:26,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:07:26,800 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:07:26,800 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 04:07:26,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:07:26,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 04:07:26,801 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-12-31 04:07:26,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:07:26,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:07:26,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:07:26,891 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:07:26,891 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:07:26,892 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-12-31 04:07:26,964 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be7cdac29/3740c66f0e884520a3773865009d2f4d/FLAGc1b246cd0 [2018-12-31 04:07:27,469 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:07:27,470 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-12-31 04:07:27,476 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be7cdac29/3740c66f0e884520a3773865009d2f4d/FLAGc1b246cd0 [2018-12-31 04:07:27,814 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be7cdac29/3740c66f0e884520a3773865009d2f4d [2018-12-31 04:07:27,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:07:27,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:07:27,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:07:27,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:07:27,827 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:07:27,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:07:27" (1/1) ... [2018-12-31 04:07:27,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712c4d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:27, skipping insertion in model container [2018-12-31 04:07:27,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:07:27" (1/1) ... [2018-12-31 04:07:27,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:07:27,869 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:07:28,120 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:07:28,125 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:07:28,164 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:07:28,201 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:07:28,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28 WrapperNode [2018-12-31 04:07:28,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:07:28,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:07:28,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:07:28,204 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:07:28,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... [2018-12-31 04:07:28,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... [2018-12-31 04:07:28,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:07:28,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:07:28,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:07:28,272 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:07:28,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... [2018-12-31 04:07:28,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... [2018-12-31 04:07:28,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... [2018-12-31 04:07:28,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... [2018-12-31 04:07:28,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... [2018-12-31 04:07:28,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... [2018-12-31 04:07:28,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... [2018-12-31 04:07:28,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:07:28,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:07:28,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:07:28,392 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:07:28,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:07:28,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 04:07:28,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-31 04:07:28,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:07:28,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:07:28,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-31 04:07:28,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:07:29,001 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:07:29,001 INFO L280 CfgBuilder]: Removed 18 assue(true) statements. [2018-12-31 04:07:29,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:07:29 BoogieIcfgContainer [2018-12-31 04:07:29,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:07:29,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:07:29,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:07:29,008 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:07:29,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:07:27" (1/3) ... [2018-12-31 04:07:29,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11878503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:07:29, skipping insertion in model container [2018-12-31 04:07:29,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:28" (2/3) ... [2018-12-31 04:07:29,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11878503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:07:29, skipping insertion in model container [2018-12-31 04:07:29,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:07:29" (3/3) ... [2018-12-31 04:07:29,014 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-12-31 04:07:29,025 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:07:29,035 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:07:29,056 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:07:29,096 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:07:29,097 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:07:29,097 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:07:29,097 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:07:29,098 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:07:29,098 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:07:29,098 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:07:29,098 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:07:29,098 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:07:29,117 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-31 04:07:29,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 04:07:29,126 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:29,130 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:29,133 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:29,140 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2018-12-31 04:07:29,142 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:07:29,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:07:29,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:07:29,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:29,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:07:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:29,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:29,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 04:07:29,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 04:07:29,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 04:07:29,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:07:29,303 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-31 04:07:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:29,321 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2018-12-31 04:07:29,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 04:07:29,323 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-31 04:07:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:29,333 INFO L225 Difference]: With dead ends: 62 [2018-12-31 04:07:29,333 INFO L226 Difference]: Without dead ends: 29 [2018-12-31 04:07:29,336 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:07:29,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-31 04:07:29,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-31 04:07:29,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-31 04:07:29,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2018-12-31 04:07:29,370 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2018-12-31 04:07:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:29,371 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2018-12-31 04:07:29,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 04:07:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2018-12-31 04:07:29,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-31 04:07:29,372 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:29,372 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:29,372 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:29,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2018-12-31 04:07:29,373 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:07:29,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:07:29,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:07:29,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:29,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:07:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:29,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:29,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:07:29,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:07:29,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:07:29,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:07:29,462 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2018-12-31 04:07:29,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:29,673 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2018-12-31 04:07:29,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:07:29,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-31 04:07:29,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:29,675 INFO L225 Difference]: With dead ends: 53 [2018-12-31 04:07:29,675 INFO L226 Difference]: Without dead ends: 44 [2018-12-31 04:07:29,676 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:07:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-31 04:07:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2018-12-31 04:07:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-31 04:07:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2018-12-31 04:07:29,683 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2018-12-31 04:07:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:29,683 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2018-12-31 04:07:29,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:07:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2018-12-31 04:07:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-31 04:07:29,684 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:29,684 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:29,685 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:29,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:29,685 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2018-12-31 04:07:29,685 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:07:29,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:07:29,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:07:29,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:29,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:07:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:29,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:29,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:29,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:07:29,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:07:29,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:07:29,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:07:29,773 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2018-12-31 04:07:29,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:29,977 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2018-12-31 04:07:29,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:07:29,977 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-31 04:07:29,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:29,978 INFO L225 Difference]: With dead ends: 55 [2018-12-31 04:07:29,979 INFO L226 Difference]: Without dead ends: 46 [2018-12-31 04:07:29,980 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:07:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-31 04:07:29,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2018-12-31 04:07:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-31 04:07:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2018-12-31 04:07:29,986 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2018-12-31 04:07:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:29,986 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2018-12-31 04:07:29,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:07:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2018-12-31 04:07:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-31 04:07:29,988 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:29,988 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:29,989 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:29,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:29,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2018-12-31 04:07:29,989 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 04:07:29,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 04:07:29,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:07:29,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:29,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 04:07:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:07:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:07:30,069 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:07:30,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:07:30 BoogieIcfgContainer [2018-12-31 04:07:30,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:07:30,101 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:07:30,101 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:07:30,101 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:07:30,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:07:29" (3/4) ... [2018-12-31 04:07:30,106 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-31 04:07:30,106 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:07:30,107 INFO L168 Benchmark]: Toolchain (without parser) took 2287.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -117.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:30,109 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:07:30,109 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.28 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:30,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.92 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:30,111 INFO L168 Benchmark]: Boogie Preprocessor took 120.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:30,112 INFO L168 Benchmark]: RCFGBuilder took 610.99 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:30,113 INFO L168 Benchmark]: TraceAbstraction took 1096.83 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:30,114 INFO L168 Benchmark]: Witness Printer took 5.28 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. [2018-12-31 04:07:30,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 381.28 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 66.92 ms. Allocated memory is still 1.0 GB. Free memory was 935.3 MB in the beginning and 929.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 120.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 610.99 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1096.83 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: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-2e94e6a [2018-12-31 04:07:32,465 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2018-12-31 04:07:32,502 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 04:07:32,502 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 04:07:32,503 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 04:07:32,505 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 04:07:32,505 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 04:07:32,506 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 04:07:32,507 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 04:07:32,508 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 04:07:32,508 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 04:07:32,509 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 04:07:32,509 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 04:07:32,510 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 04:07:32,511 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 04:07:32,511 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-31 04:07:32,527 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 04:07:32,527 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 04:07:32,528 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 04:07:32,528 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 04:07:32,528 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 04:07:32,529 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 04:07:32,529 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 04:07:32,529 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 04:07:32,529 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 04:07:32,530 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 04:07:32,530 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 04:07:32,530 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 04:07:32,530 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-31 04:07:32,530 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-31 04:07:32,530 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 04:07:32,531 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 04:07:32,531 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 04:07:32,531 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 04:07:32,531 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 04:07:32,531 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 04:07:32,532 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 04:07:32,532 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 04:07:32,532 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:07:32,532 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 04:07:32,532 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 04:07:32,533 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 04:07:32,533 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-31 04:07:32,533 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 04:07:32,533 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-31 04:07:32,533 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-31 04:07:32,534 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-12-31 04:07:32,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 04:07:32,599 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 04:07:32,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 04:07:32,605 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 04:07:32,605 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 04:07:32,606 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-12-31 04:07:32,666 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e1784038/ba74c9392af04756b78ca305cb618ef4/FLAGf639a0731 [2018-12-31 04:07:33,137 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 04:07:33,137 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-12-31 04:07:33,146 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e1784038/ba74c9392af04756b78ca305cb618ef4/FLAGf639a0731 [2018-12-31 04:07:33,486 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e1784038/ba74c9392af04756b78ca305cb618ef4 [2018-12-31 04:07:33,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 04:07:33,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 04:07:33,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 04:07:33,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 04:07:33,498 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 04:07:33,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:33,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a863a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33, skipping insertion in model container [2018-12-31 04:07:33,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:33,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 04:07:33,529 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 04:07:33,790 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:07:33,797 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 04:07:33,831 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 04:07:33,873 INFO L195 MainTranslator]: Completed translation [2018-12-31 04:07:33,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33 WrapperNode [2018-12-31 04:07:33,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 04:07:33,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 04:07:33,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 04:07:33,875 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 04:07:33,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:33,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:33,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 04:07:33,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 04:07:33,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 04:07:33,934 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 04:07:34,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:34,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:34,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:34,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:34,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:34,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:34,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... [2018-12-31 04:07:34,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 04:07:34,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 04:07:34,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 04:07:34,049 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 04:07:34,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 04:07:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 04:07:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-31 04:07:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 04:07:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 04:07:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-31 04:07:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 04:07:34,343 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 04:07:34,526 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 04:07:34,673 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 04:07:34,722 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 04:07:34,722 INFO L280 CfgBuilder]: Removed 18 assue(true) statements. [2018-12-31 04:07:34,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:07:34 BoogieIcfgContainer [2018-12-31 04:07:34,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 04:07:34,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 04:07:34,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 04:07:34,729 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 04:07:34,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 04:07:33" (1/3) ... [2018-12-31 04:07:34,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0f8676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:07:34, skipping insertion in model container [2018-12-31 04:07:34,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 04:07:33" (2/3) ... [2018-12-31 04:07:34,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0f8676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 04:07:34, skipping insertion in model container [2018-12-31 04:07:34,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:07:34" (3/3) ... [2018-12-31 04:07:34,735 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-12-31 04:07:34,746 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 04:07:34,755 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 04:07:34,773 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 04:07:34,801 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 04:07:34,802 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 04:07:34,802 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 04:07:34,802 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 04:07:34,802 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 04:07:34,803 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 04:07:34,803 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 04:07:34,803 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 04:07:34,803 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 04:07:34,817 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-12-31 04:07:34,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-31 04:07:34,823 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:34,824 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:34,826 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:34,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:34,832 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2018-12-31 04:07:34,835 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:07:34,836 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-31 04:07:34,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:34,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:07:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:34,916 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:07:34,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:34,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-31 04:07:34,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-31 04:07:34,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-31 04:07:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:07:34,950 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2018-12-31 04:07:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:34,968 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2018-12-31 04:07:34,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-31 04:07:34,969 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-31 04:07:34,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:34,980 INFO L225 Difference]: With dead ends: 62 [2018-12-31 04:07:34,981 INFO L226 Difference]: Without dead ends: 29 [2018-12-31 04:07:34,984 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-31 04:07:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-31 04:07:35,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-31 04:07:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-31 04:07:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2018-12-31 04:07:35,023 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2018-12-31 04:07:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:35,023 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2018-12-31 04:07:35,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-31 04:07:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2018-12-31 04:07:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-31 04:07:35,024 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:35,024 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:35,025 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:35,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:35,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2018-12-31 04:07:35,026 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:07:35,026 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 [2018-12-31 04:07:35,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:35,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:07:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:35,154 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:07:35,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:35,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:07:35,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:07:35,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:07:35,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:07:35,174 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2018-12-31 04:07:35,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:35,508 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2018-12-31 04:07:35,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:07:35,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-31 04:07:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:35,511 INFO L225 Difference]: With dead ends: 53 [2018-12-31 04:07:35,511 INFO L226 Difference]: Without dead ends: 44 [2018-12-31 04:07:35,512 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:07:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-31 04:07:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2018-12-31 04:07:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-31 04:07:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2018-12-31 04:07:35,520 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2018-12-31 04:07:35,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:35,520 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2018-12-31 04:07:35,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:07:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2018-12-31 04:07:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-31 04:07:35,521 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:35,521 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:35,522 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:35,522 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2018-12-31 04:07:35,523 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:07:35,523 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) [2018-12-31 04:07:35,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-31 04:07:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:35,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:07:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:35,643 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:07:35,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:35,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:07:35,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:07:35,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:07:35,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:07:35,657 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2018-12-31 04:07:35,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:35,861 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2018-12-31 04:07:35,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:07:35,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-12-31 04:07:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:35,862 INFO L225 Difference]: With dead ends: 50 [2018-12-31 04:07:35,863 INFO L226 Difference]: Without dead ends: 26 [2018-12-31 04:07:35,863 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:07:35,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-31 04:07:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-31 04:07:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-31 04:07:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2018-12-31 04:07:35,869 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 12 [2018-12-31 04:07:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:35,869 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2018-12-31 04:07:35,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:07:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2018-12-31 04:07:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-31 04:07:35,870 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:35,870 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:35,871 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:35,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2018-12-31 04:07:35,872 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:07:35,872 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-12-31 04:07:35,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:35,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:07:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:35,961 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:07:35,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:35,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-31 04:07:35,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-31 04:07:35,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-31 04:07:35,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-31 04:07:35,975 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 4 states. [2018-12-31 04:07:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:36,083 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-12-31 04:07:36,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-31 04:07:36,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-12-31 04:07:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:36,085 INFO L225 Difference]: With dead ends: 48 [2018-12-31 04:07:36,085 INFO L226 Difference]: Without dead ends: 39 [2018-12-31 04:07:36,085 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:07:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-31 04:07:36,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2018-12-31 04:07:36,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-31 04:07:36,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-12-31 04:07:36,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2018-12-31 04:07:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:36,092 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-12-31 04:07:36,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-31 04:07:36,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2018-12-31 04:07:36,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-31 04:07:36,093 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:36,093 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:36,093 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:36,094 INFO L82 PathProgramCache]: Analyzing trace with hash 874935118, now seen corresponding path program 1 times [2018-12-31 04:07:36,094 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:07:36,094 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-12-31 04:07:36,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-12-31 04:07:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:36,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:07:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:36,239 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:07:36,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:36,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 04:07:36,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 04:07:36,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 04:07:36,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 04:07:36,251 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2018-12-31 04:07:36,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:36,377 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2018-12-31 04:07:36,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 04:07:36,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-12-31 04:07:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:36,381 INFO L225 Difference]: With dead ends: 39 [2018-12-31 04:07:36,382 INFO L226 Difference]: Without dead ends: 23 [2018-12-31 04:07:36,382 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-31 04:07:36,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-31 04:07:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-31 04:07:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-31 04:07:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-31 04:07:36,397 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2018-12-31 04:07:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:36,397 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-31 04:07:36,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 04:07:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-31 04:07:36,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-31 04:07:36,398 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:36,398 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:36,399 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:36,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:36,399 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2018-12-31 04:07:36,399 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:07:36,399 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-12-31 04:07:36,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:36,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:07:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:36,483 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:07:36,493 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:36,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-31 04:07:36,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-31 04:07:36,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-31 04:07:36,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 04:07:36,494 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2018-12-31 04:07:36,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:36,512 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-12-31 04:07:36,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-31 04:07:36,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-12-31 04:07:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:36,517 INFO L225 Difference]: With dead ends: 33 [2018-12-31 04:07:36,517 INFO L226 Difference]: Without dead ends: 23 [2018-12-31 04:07:36,518 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-31 04:07:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-31 04:07:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-31 04:07:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-31 04:07:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-12-31 04:07:36,523 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-12-31 04:07:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:36,524 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-12-31 04:07:36,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-31 04:07:36,524 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-12-31 04:07:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-31 04:07:36,525 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:36,525 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:36,525 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:36,526 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2018-12-31 04:07:36,526 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:07:36,526 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-12-31 04:07:36,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 04:07:36,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 04:07:36,951 WARN L181 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 1 [2018-12-31 04:07:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 04:07:36,953 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-31 04:07:36,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 04:07:36,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-31 04:07:36,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 04:07:36,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 04:07:36,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-31 04:07:36,963 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2018-12-31 04:07:37,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 04:07:37,059 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-12-31 04:07:37,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 04:07:37,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-12-31 04:07:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 04:07:37,061 INFO L225 Difference]: With dead ends: 26 [2018-12-31 04:07:37,061 INFO L226 Difference]: Without dead ends: 23 [2018-12-31 04:07:37,062 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-12-31 04:07:37,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-31 04:07:37,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-31 04:07:37,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-31 04:07:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2018-12-31 04:07:37,066 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 18 [2018-12-31 04:07:37,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 04:07:37,067 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2018-12-31 04:07:37,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 04:07:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2018-12-31 04:07:37,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-31 04:07:37,068 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 04:07:37,068 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 04:07:37,068 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 04:07:37,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 04:07:37,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2018-12-31 04:07:37,069 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-31 04:07:37,069 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-12-31 04:07:37,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 04:07:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:07:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-31 04:07:37,297 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-31 04:07:37,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 04:07:37 BoogieIcfgContainer [2018-12-31 04:07:37,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 04:07:37,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 04:07:37,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 04:07:37,393 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 04:07:37,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 04:07:34" (3/4) ... [2018-12-31 04:07:37,401 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-31 04:07:37,550 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 04:07:37,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 04:07:37,555 INFO L168 Benchmark]: Toolchain (without parser) took 4063.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 947.3 MB in the beginning and 946.5 MB in the end (delta: 799.6 kB). Peak memory consumption was 131.3 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:37,558 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:07:37,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.03 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:37,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.38 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:37,560 INFO L168 Benchmark]: Boogie Preprocessor took 115.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:37,562 INFO L168 Benchmark]: RCFGBuilder took 674.18 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:37,563 INFO L168 Benchmark]: TraceAbstraction took 2666.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.5 MB in the end (delta: 151.8 MB). Peak memory consumption was 151.8 MB. Max. memory is 11.5 GB. [2018-12-31 04:07:37,563 INFO L168 Benchmark]: Witness Printer took 161.57 ms. Allocated memory is still 1.2 GB. Free memory is still 946.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 04:07:37,572 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 380.03 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 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 58.38 ms. Allocated memory is still 1.0 GB. Free memory was 936.6 MB in the beginning and 931.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 115.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 931.2 MB in the beginning and 1.1 GB in the end (delta: -187.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 674.18 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2666.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 946.5 MB in the end (delta: 151.8 MB). Peak memory consumption was 151.8 MB. Max. memory is 11.5 GB. * Witness Printer took 161.57 ms. Allocated memory is still 1.2 GB. Free memory is still 946.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L36] COND FALSE !(__fpclassify_float(x) == 0) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] EXPR x < y ? x : y [L41] return x < y ? x : y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L45] __uint32_t w; [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (w) = gf_u.word [L53] return (w & 0x80000000) != 0; [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. UNSAFE Result, 2.5s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 214 SDtfs, 118 SDslu, 217 SDs, 0 SdLazy, 82 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3961 SizeOfPredicates, 25 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...