./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1092a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1092a_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb906b6dd506785279c111a847f91453236e370a ................................................................................................................................................................................................................................................................................................. 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_1092a_true-unreach-call.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb906b6dd506785279c111a847f91453236e370a ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:03:50,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:03:50,768 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:03:50,780 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:03:50,780 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:03:50,781 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:03:50,783 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:03:50,784 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:03:50,786 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:03:50,787 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:03:50,788 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:03:50,788 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:03:50,789 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:03:50,790 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:03:50,791 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:03:50,792 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:03:50,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:03:50,794 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:03:50,797 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:03:50,798 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:03:50,799 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:03:50,801 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:03:50,803 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:03:50,804 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:03:50,804 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:03:50,805 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:03:50,806 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:03:50,807 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:03:50,808 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:03:50,809 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:03:50,809 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:03:50,810 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:03:50,810 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:03:50,810 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:03:50,811 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:03:50,812 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:03:50,812 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:03:50,828 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:03:50,829 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:03:50,830 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:03:50,830 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:03:50,830 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:03:50,831 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:03:50,831 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:03:50,831 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:03:50,831 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:03:50,831 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:03:50,832 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:03:50,832 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:03:50,832 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:03:50,832 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:03:50,832 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:03:50,833 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:03:50,833 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:03:50,833 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:03:50,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:03:50,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:03:50,834 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:03:50,834 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:03:50,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:03:50,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:50,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:03:50,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:03:50,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:03:50,835 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:03:50,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:03:50,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:03:50,835 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 -> fb906b6dd506785279c111a847f91453236e370a [2018-11-28 18:03:50,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:03:50,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:03:50,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:03:50,890 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:03:50,890 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:03:50,891 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1092a_true-unreach-call.c [2018-11-28 18:03:50,952 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40689dcbe/0d77904212e14ed7886222054881d229/FLAGfb55939ba [2018-11-28 18:03:51,445 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:03:51,447 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1092a_true-unreach-call.c [2018-11-28 18:03:51,458 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40689dcbe/0d77904212e14ed7886222054881d229/FLAGfb55939ba [2018-11-28 18:03:51,760 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40689dcbe/0d77904212e14ed7886222054881d229 [2018-11-28 18:03:51,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:03:51,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:03:51,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:51,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:03:51,773 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:03:51,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:51" (1/1) ... [2018-11-28 18:03:51,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d20bde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:51, skipping insertion in model container [2018-11-28 18:03:51,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:51" (1/1) ... [2018-11-28 18:03:51,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:03:51,813 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:03:52,014 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:52,019 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:03:52,049 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:52,074 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:03:52,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52 WrapperNode [2018-11-28 18:03:52,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:52,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:52,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:03:52,076 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:03:52,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... [2018-11-28 18:03:52,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... [2018-11-28 18:03:52,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:52,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:03:52,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:03:52,112 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:03:52,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... [2018-11-28 18:03:52,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... [2018-11-28 18:03:52,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... [2018-11-28 18:03:52,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... [2018-11-28 18:03:52,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... [2018-11-28 18:03:52,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... [2018-11-28 18:03:52,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... [2018-11-28 18:03:52,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:03:52,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:03:52,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:03:52,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:03:52,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-28 18:03:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:03:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:03:52,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:03:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:03:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:03:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:03:52,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:03:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:03:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:03:52,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:03:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-11-28 18:03:52,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-11-28 18:03:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:03:52,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:03:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:03:52,819 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:03:52,820 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 18:03:52,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:52 BoogieIcfgContainer [2018-11-28 18:03:52,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:03:52,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:03:52,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:03:52,825 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:03:52,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:03:51" (1/3) ... [2018-11-28 18:03:52,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221d12f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:52, skipping insertion in model container [2018-11-28 18:03:52,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:52" (2/3) ... [2018-11-28 18:03:52,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221d12f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:52, skipping insertion in model container [2018-11-28 18:03:52,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:52" (3/3) ... [2018-11-28 18:03:52,829 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a_true-unreach-call.c [2018-11-28 18:03:52,840 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:03:52,850 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:03:52,869 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:03:52,906 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:03:52,907 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:03:52,907 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:03:52,907 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:03:52,907 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:03:52,908 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:03:52,908 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:03:52,908 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:03:52,908 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:03:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 18:03:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 18:03:52,937 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:52,938 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:52,940 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:52,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:52,946 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2018-11-28 18:03:52,948 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:03:52,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:03:52,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:52,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:52,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:53,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:53,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:03:53,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:03:53,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:03:53,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:53,113 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 18:03:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:53,141 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-11-28 18:03:53,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:03:53,143 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-28 18:03:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:53,155 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:03:53,155 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:03:53,160 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:03:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 18:03:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 18:03:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-11-28 18:03:53,208 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-11-28 18:03:53,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:53,208 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-11-28 18:03:53,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:03:53,209 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-11-28 18:03:53,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 18:03:53,210 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:53,210 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:53,210 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:53,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:53,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2018-11-28 18:03:53,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:03:53,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:03:53,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:53,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:53,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:03:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:03:53,355 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:03:53,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:03:53 BoogieIcfgContainer [2018-11-28 18:03:53,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:03:53,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:03:53,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:03:53,405 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:03:53,406 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:52" (3/4) ... [2018-11-28 18:03:53,411 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:03:53,412 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:03:53,413 INFO L168 Benchmark]: Toolchain (without parser) took 1648.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -126.1 MB). Peak memory consumption was 4.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:53,417 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-28 18:03:53,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.18 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. [2018-11-28 18:03:53,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.73 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:53,422 INFO L168 Benchmark]: Boogie Preprocessor took 42.80 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. [2018-11-28 18:03:53,424 INFO L168 Benchmark]: RCFGBuilder took 666.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:53,426 INFO L168 Benchmark]: TraceAbstraction took 581.86 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:53,427 INFO L168 Benchmark]: Witness Printer took 8.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:53,435 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 308.18 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 34.73 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 42.80 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. * RCFGBuilder took 666.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -169.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 581.86 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * Witness Printer took 8.02 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: 81]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of bitwiseAnd at line 21, overapproximation of someUnaryFLOAToperation at line 76, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; VAL [\old(huge_ceil)=6442450948, huge_ceil=1000000000000000000000000000000] [L76] float x = -0.0f; VAL [huge_ceil=1000000000000000000000000000000] [L77] CALL, EXPR ceil_float(x) VAL [\old(x)=6442450950, huge_ceil=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=6442450950, huge_ceil=1000000000000000000000000000000, x=6442450950] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=6442450950, huge_ceil=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=6442450950] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=6442450950, huge_ceil=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=6442450950] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=6442450950, huge_ceil=1000000000000000000000000000000, i=-36028794871480321, i0=-2147483648, j0=128, x=6442450950] [L77] RET, EXPR ceil_float(x) VAL [ceil_float(x)=6442450947, huge_ceil=1000000000000000000000000000000, x=6442450950] [L77] float res = ceil_float(x); [L80] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_ceil=1000000000000000000000000000000, res=6442450947, res == -0.0f && __signbit_float(res) == 1=0, x=6442450950] [L80] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L81] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000, res=6442450947, x=6442450950] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 18:03:55,907 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:03:55,909 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:03:55,920 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:03:55,921 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:03:55,922 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:03:55,923 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:03:55,925 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:03:55,926 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:03:55,927 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:03:55,928 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:03:55,928 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:03:55,929 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:03:55,930 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:03:55,931 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:03:55,932 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:03:55,933 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:03:55,935 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:03:55,937 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:03:55,938 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:03:55,939 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:03:55,941 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:03:55,943 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:03:55,943 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:03:55,943 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:03:55,944 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:03:55,945 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:03:55,946 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:03:55,947 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:03:55,948 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:03:55,948 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:03:55,949 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:03:55,949 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:03:55,949 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:03:55,951 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:03:55,951 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:03:55,952 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:03:55,967 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:03:55,967 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:03:55,968 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:03:55,968 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:03:55,969 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:03:55,969 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:03:55,969 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:03:55,970 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:03:55,970 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:03:55,970 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:03:55,970 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:03:55,970 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:03:55,970 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:03:55,971 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:03:55,971 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:03:55,971 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:03:55,971 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:03:55,971 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:03:55,972 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:03:55,972 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:03:55,972 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:03:55,972 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:03:55,972 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:03:55,972 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:03:55,973 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:55,973 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:03:55,973 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:03:55,973 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:03:55,973 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:03:55,973 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:03:55,974 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:03:55,974 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:03:55,974 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 -> fb906b6dd506785279c111a847f91453236e370a [2018-11-28 18:03:56,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:03:56,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:03:56,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:03:56,024 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:03:56,025 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:03:56,026 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1092a_true-unreach-call.c [2018-11-28 18:03:56,078 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a55e64441/2c5b32d79ec747e4bde72ac9b3da835b/FLAG6463bad4e [2018-11-28 18:03:56,542 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:03:56,542 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1092a_true-unreach-call.c [2018-11-28 18:03:56,550 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a55e64441/2c5b32d79ec747e4bde72ac9b3da835b/FLAG6463bad4e [2018-11-28 18:03:56,895 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a55e64441/2c5b32d79ec747e4bde72ac9b3da835b [2018-11-28 18:03:56,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:03:56,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:03:56,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:56,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:03:56,905 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:03:56,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:56" (1/1) ... [2018-11-28 18:03:56,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1be191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:56, skipping insertion in model container [2018-11-28 18:03:56,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:56" (1/1) ... [2018-11-28 18:03:56,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:03:56,937 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:03:57,163 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:57,170 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:03:57,206 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:57,240 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:03:57,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57 WrapperNode [2018-11-28 18:03:57,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:57,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:57,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:03:57,242 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:03:57,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... [2018-11-28 18:03:57,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... [2018-11-28 18:03:57,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:57,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:03:57,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:03:57,287 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:03:57,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... [2018-11-28 18:03:57,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... [2018-11-28 18:03:57,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... [2018-11-28 18:03:57,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... [2018-11-28 18:03:57,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... [2018-11-28 18:03:57,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... [2018-11-28 18:03:57,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... [2018-11-28 18:03:57,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:03:57,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:03:57,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:03:57,464 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:03:57,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:03:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:03:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:03:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:03:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:03:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:03:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:03:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:03:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:03:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-11-28 18:03:57,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-11-28 18:03:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-28 18:03:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:03:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:03:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 18:03:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:03:58,157 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:03:58,477 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:03:58,493 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:03:58,493 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 18:03:58,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:58 BoogieIcfgContainer [2018-11-28 18:03:58,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:03:58,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:03:58,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:03:58,499 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:03:58,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:03:56" (1/3) ... [2018-11-28 18:03:58,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ec7cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:58, skipping insertion in model container [2018-11-28 18:03:58,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:57" (2/3) ... [2018-11-28 18:03:58,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ec7cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:58, skipping insertion in model container [2018-11-28 18:03:58,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:58" (3/3) ... [2018-11-28 18:03:58,502 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092a_true-unreach-call.c [2018-11-28 18:03:58,512 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:03:58,521 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:03:58,538 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:03:58,574 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:03:58,575 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:03:58,576 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:03:58,576 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:03:58,576 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:03:58,576 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:03:58,577 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:03:58,577 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:03:58,577 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:03:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 18:03:58,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 18:03:58,606 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:58,607 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:58,609 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:58,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:58,615 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2018-11-28 18:03:58,619 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:58,619 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 18:03:58,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:58,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:58,732 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:58,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:58,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:03:58,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:03:58,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:03:58,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:58,764 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 18:03:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:58,788 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-11-28 18:03:58,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:03:58,790 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-28 18:03:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:58,800 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:03:58,801 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:03:58,805 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:58,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:03:58,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 18:03:58,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 18:03:58,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-11-28 18:03:58,849 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-11-28 18:03:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:58,850 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-11-28 18:03:58,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:03:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-11-28 18:03:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 18:03:58,852 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:58,852 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:58,852 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:58,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:58,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2018-11-28 18:03:58,854 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:03:58,854 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:03:58,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:58,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:03:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:59,238 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:03:59,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:59,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:03:59,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:03:59,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:03:59,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:03:59,255 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 7 states. [2018-11-28 18:03:59,741 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-28 18:04:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:01,217 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-11-28 18:04:01,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 18:04:01,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-28 18:04:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:01,221 INFO L225 Difference]: With dead ends: 60 [2018-11-28 18:04:01,221 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:04:01,223 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:04:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:04:01,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-11-28 18:04:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 18:04:01,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-11-28 18:04:01,233 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-11-28 18:04:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:01,233 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-11-28 18:04:01,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:04:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-11-28 18:04:01,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:04:01,235 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:01,235 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] [2018-11-28 18:04:01,236 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:01,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:01,237 INFO L82 PathProgramCache]: Analyzing trace with hash 664765980, now seen corresponding path program 1 times [2018-11-28 18:04:01,237 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:01,237 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:01,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:01,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:01,444 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:01,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:01,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:04:01,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:04:01,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:04:01,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:04:01,455 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2018-11-28 18:04:01,773 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-28 18:04:03,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:03,014 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-11-28 18:04:03,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:03,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-28 18:04:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:03,018 INFO L225 Difference]: With dead ends: 67 [2018-11-28 18:04:03,018 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:04:03,020 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:04:03,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-11-28 18:04:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:04:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-11-28 18:04:03,027 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2018-11-28 18:04:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:03,027 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-11-28 18:04:03,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:04:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-11-28 18:04:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:04:03,029 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:03,030 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:03,030 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:03,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:03,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1845640621, now seen corresponding path program 1 times [2018-11-28 18:04:03,031 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:03,031 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:03,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:03,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:04,451 WARN L180 SmtUtils]: Spent 624.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 18:04:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:04,467 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:04,482 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:04,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:04:04,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:04:04,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:04:04,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:04:04,484 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2018-11-28 18:04:05,841 WARN L180 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 18:04:06,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:06,398 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-11-28 18:04:06,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:04:06,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-28 18:04:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:06,406 INFO L225 Difference]: With dead ends: 52 [2018-11-28 18:04:06,406 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 18:04:06,406 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:04:06,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 18:04:06,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 18:04:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:04:06,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-11-28 18:04:06,413 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2018-11-28 18:04:06,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:06,414 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-11-28 18:04:06,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:04:06,414 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-11-28 18:04:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 18:04:06,415 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:06,415 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:06,415 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:06,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:06,415 INFO L82 PathProgramCache]: Analyzing trace with hash -530743544, now seen corresponding path program 1 times [2018-11-28 18:04:06,418 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:06,418 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:06,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:06,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:06,590 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:06,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:06,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:04:06,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:04:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:04:06,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:04:06,602 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 7 states. [2018-11-28 18:04:06,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:06,823 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-11-28 18:04:06,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:04:06,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-11-28 18:04:06,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:06,825 INFO L225 Difference]: With dead ends: 44 [2018-11-28 18:04:06,825 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 18:04:06,826 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:04:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 18:04:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 18:04:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 18:04:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-11-28 18:04:06,834 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 24 [2018-11-28 18:04:06,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:06,834 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-11-28 18:04:06,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:04:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-11-28 18:04:06,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:04:06,835 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:06,835 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:06,836 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:06,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:06,836 INFO L82 PathProgramCache]: Analyzing trace with hash 943724535, now seen corresponding path program 1 times [2018-11-28 18:04:06,836 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:06,837 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:06,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:06,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:07,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:07,043 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:07,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:07,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:04:07,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:04:07,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:04:07,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:04:07,054 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 6 states. [2018-11-28 18:04:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:07,456 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2018-11-28 18:04:07,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:04:07,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-28 18:04:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:07,458 INFO L225 Difference]: With dead ends: 57 [2018-11-28 18:04:07,459 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 18:04:07,459 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-28 18:04:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 18:04:07,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-28 18:04:07,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 18:04:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2018-11-28 18:04:07,465 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 25 [2018-11-28 18:04:07,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:07,465 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2018-11-28 18:04:07,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:04:07,466 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2018-11-28 18:04:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 18:04:07,467 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:07,468 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:07,468 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:07,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:07,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1511102072, now seen corresponding path program 1 times [2018-11-28 18:04:07,469 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:07,470 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:07,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:07,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:07,846 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:07,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:07,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-28 18:04:07,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 18:04:07,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 18:04:07,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:07,859 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand 12 states. [2018-11-28 18:04:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:08,354 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2018-11-28 18:04:08,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:08,355 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-11-28 18:04:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:08,356 INFO L225 Difference]: With dead ends: 33 [2018-11-28 18:04:08,356 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:04:08,357 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2018-11-28 18:04:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:04:08,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:04:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:04:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:04:08,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-11-28 18:04:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:08,359 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:04:08,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 18:04:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:04:08,359 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:04:08,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:04:08,705 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:04:08,706 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:04:08,706 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:04:08,706 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:04:08,706 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0) [2018-11-28 18:04:08,706 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:04:08,707 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:04:08,707 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 68 86) the Hoare annotation is: true [2018-11-28 18:04:08,707 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 68 86) no Hoare annotation was computed. [2018-11-28 18:04:08,707 INFO L448 ceAbstractionStarter]: For program point L81(line 81) no Hoare annotation was computed. [2018-11-28 18:04:08,707 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-28 18:04:08,707 INFO L444 ceAbstractionStarter]: At program point L80-1(line 80) the Hoare annotation is: (or (and |main_#t~short8| (= main_~x~0 (fp.neg (_ +zero 8 24))) (= (fp (_ bv1 1) (_ bv0 8) (_ bv0 23)) main_~res~0)) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0))) [2018-11-28 18:04:08,707 INFO L448 ceAbstractionStarter]: For program point L80-2(line 80) no Hoare annotation was computed. [2018-11-28 18:04:08,708 INFO L444 ceAbstractionStarter]: At program point L77(line 77) the Hoare annotation is: (or (= main_~x~0 (fp.neg (_ +zero 8 24))) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0))) [2018-11-28 18:04:08,708 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 68 86) no Hoare annotation was computed. [2018-11-28 18:04:08,708 INFO L448 ceAbstractionStarter]: For program point L77-1(line 77) no Hoare annotation was computed. [2018-11-28 18:04:08,708 INFO L448 ceAbstractionStarter]: For program point L80-4(lines 80 83) no Hoare annotation was computed. [2018-11-28 18:04:08,708 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2018-11-28 18:04:08,708 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 47) no Hoare annotation was computed. [2018-11-28 18:04:08,709 INFO L448 ceAbstractionStarter]: For program point L48(lines 48 52) no Hoare annotation was computed. [2018-11-28 18:04:08,709 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2018-11-28 18:04:08,709 INFO L448 ceAbstractionStarter]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2018-11-28 18:04:08,709 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-11-28 18:04:08,709 INFO L451 ceAbstractionStarter]: At program point ceil_floatENTRY(lines 13 54) the Hoare annotation is: true [2018-11-28 18:04:08,709 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-28 18:04:08,709 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 41) no Hoare annotation was computed. [2018-11-28 18:04:08,709 INFO L448 ceAbstractionStarter]: For program point ceil_floatFINAL(lines 13 54) no Hoare annotation was computed. [2018-11-28 18:04:08,710 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-28 18:04:08,710 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (or (= |ceil_float_#in~x| ceil_float_~x) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0))) [2018-11-28 18:04:08,710 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-11-28 18:04:08,710 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2018-11-28 18:04:08,710 INFO L448 ceAbstractionStarter]: For program point ceil_floatEXIT(lines 13 54) no Hoare annotation was computed. [2018-11-28 18:04:08,710 INFO L448 ceAbstractionStarter]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2018-11-28 18:04:08,710 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-11-28 18:04:08,711 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2018-11-28 18:04:08,711 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 30) no Hoare annotation was computed. [2018-11-28 18:04:08,711 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 46) no Hoare annotation was computed. [2018-11-28 18:04:08,711 INFO L448 ceAbstractionStarter]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2018-11-28 18:04:08,711 INFO L444 ceAbstractionStarter]: At program point L59-2(lines 59 63) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0)) (= |__signbit_float_#in~x| __signbit_float_~x)) [2018-11-28 18:04:08,711 INFO L448 ceAbstractionStarter]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2018-11-28 18:04:08,711 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 56 66) no Hoare annotation was computed. [2018-11-28 18:04:08,712 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 56 66) the Hoare annotation is: true [2018-11-28 18:04:08,712 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 56 66) no Hoare annotation was computed. [2018-11-28 18:04:08,720 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,722 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,727 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,727 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,729 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,729 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,729 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,730 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:04:08 BoogieIcfgContainer [2018-11-28 18:04:08,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:04:08,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:04:08,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:04:08,733 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:04:08,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:58" (3/4) ... [2018-11-28 18:04:08,737 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:04:08,743 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:04:08,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:04:08,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ceil_float [2018-11-28 18:04:08,744 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-11-28 18:04:08,752 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-11-28 18:04:08,752 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 18:04:08,753 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:04:08,779 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) [2018-11-28 18:04:08,780 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) || \old(x) == x [2018-11-28 18:04:08,817 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:04:08,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:04:08,818 INFO L168 Benchmark]: Toolchain (without parser) took 11919.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 946.0 MB in the beginning and 859.3 MB in the end (delta: 86.7 MB). Peak memory consumption was 238.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:08,819 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. [2018-11-28 18:04:08,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.75 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:08,821 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.01 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 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. [2018-11-28 18:04:08,822 INFO L168 Benchmark]: Boogie Preprocessor took 177.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -215.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:08,822 INFO L168 Benchmark]: RCFGBuilder took 1030.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:08,824 INFO L168 Benchmark]: TraceAbstraction took 10237.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.3 MB in the end (delta: 260.9 MB). Peak memory consumption was 260.9 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:08,825 INFO L168 Benchmark]: Witness Printer took 84.45 ms. Allocated memory is still 1.2 GB. Free memory is still 859.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:08,830 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 340.75 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 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 44.01 ms. Allocated memory is still 1.0 GB. Free memory was 935.2 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 177.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 929.9 MB in the beginning and 1.1 GB in the end (delta: -215.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1030.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10237.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 859.3 MB in the end (delta: 260.9 MB). Peak memory consumption was 260.9 MB. Max. memory is 11.5 GB. * Witness Printer took 84.45 ms. Allocated memory is still 1.2 GB. Free memory is still 859.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant [2018-11-28 18:04:08,838 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,838 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,839 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,839 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) || \old(x) == x - InvariantResult [Line: 16]: Loop Invariant [2018-11-28 18:04:08,848 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,848 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,848 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:08,849 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. SAFE Result, 10.1s OverallTime, 7 OverallIterations, 1 TraceHistogramMax, 6.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 229 SDtfs, 226 SDslu, 728 SDs, 0 SdLazy, 330 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 20 PreInvPairs, 23 NumberOfFragments, 70 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 154 ConstructedInterpolants, 17 QuantifiedInterpolants, 20017 SizeOfPredicates, 25 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...