./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/double_req_bl_1232a_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/double_req_bl_1232a_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 4284cb37841cd94fe17da64cc250a8a1e69c6375 ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/double_req_bl_1232a_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 4284cb37841cd94fe17da64cc250a8a1e69c6375 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:56:35,738 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:56:35,740 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:56:35,752 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:56:35,752 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:56:35,753 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:56:35,755 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:56:35,757 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:56:35,758 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:56:35,759 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:56:35,760 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:56:35,761 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:56:35,762 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:56:35,763 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:56:35,764 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:56:35,765 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:56:35,766 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:56:35,768 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:56:35,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:56:35,772 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:56:35,773 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:56:35,774 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:56:35,777 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:56:35,777 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:56:35,778 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:56:35,779 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:56:35,780 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:56:35,781 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:56:35,782 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:56:35,783 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:56:35,783 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:56:35,784 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:56:35,784 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:56:35,784 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:56:35,786 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:56:35,786 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:56:35,787 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 17:56:35,813 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:56:35,814 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:56:35,815 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:56:35,815 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:56:35,816 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:56:35,816 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:56:35,816 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:56:35,816 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:56:35,816 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:56:35,816 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 17:56:35,819 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:56:35,819 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:56:35,819 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:56:35,819 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:56:35,819 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:56:35,820 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:56:35,820 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:56:35,821 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:56:35,821 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:56:35,821 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:56:35,821 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:56:35,821 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:56:35,824 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:56:35,824 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:35,824 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:56:35,824 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:56:35,825 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:56:35,825 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 17:56:35,825 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:56:35,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 17:56:35,827 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 -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-11-28 17:56:35,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:56:35,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:56:35,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:56:35,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:56:35,914 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:56:35,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-28 17:56:35,976 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de00b550/05e9148cce6d4942b4ecbf8b021d994f/FLAGa16c43a69 [2018-11-28 17:56:36,425 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:56:36,427 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-28 17:56:36,437 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de00b550/05e9148cce6d4942b4ecbf8b021d994f/FLAGa16c43a69 [2018-11-28 17:56:36,757 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4de00b550/05e9148cce6d4942b4ecbf8b021d994f [2018-11-28 17:56:36,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:56:36,763 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:56:36,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:36,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:56:36,771 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:56:36,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:36" (1/1) ... [2018-11-28 17:56:36,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a69310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:36, skipping insertion in model container [2018-11-28 17:56:36,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:36" (1/1) ... [2018-11-28 17:56:36,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:56:36,815 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:56:37,022 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:37,026 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:56:37,057 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:37,081 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:56:37,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37 WrapperNode [2018-11-28 17:56:37,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:37,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:37,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:56:37,083 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:56:37,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:37,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:56:37,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:56:37,113 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:56:37,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (1/1) ... [2018-11-28 17:56:37,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:56:37,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:56:37,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:56:37,149 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:56:37,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (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 17:56:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 17:56:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 17:56:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:56:37,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:56:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 17:56:37,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 17:56:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:56:37,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:56:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 17:56:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:56:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:56:37,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:56:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-28 17:56:37,275 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-28 17:56:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 17:56:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:56:37,851 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:56:37,851 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 17:56:37,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:37 BoogieIcfgContainer [2018-11-28 17:56:37,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:56:37,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:56:37,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:56:37,856 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:56:37,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:56:36" (1/3) ... [2018-11-28 17:56:37,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ba61c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:37, skipping insertion in model container [2018-11-28 17:56:37,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:37" (2/3) ... [2018-11-28 17:56:37,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ba61c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:37, skipping insertion in model container [2018-11-28 17:56:37,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:37" (3/3) ... [2018-11-28 17:56:37,860 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-11-28 17:56:37,871 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:56:37,881 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:56:37,900 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:56:37,935 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:56:37,936 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:56:37,936 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:56:37,937 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:56:37,937 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:56:37,937 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:56:37,937 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:56:37,937 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:56:37,938 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:56:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-28 17:56:37,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 17:56:37,968 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:37,969 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:37,971 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:37,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:37,979 INFO L82 PathProgramCache]: Analyzing trace with hash 2125018936, now seen corresponding path program 1 times [2018-11-28 17:56:37,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:37,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:38,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:38,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:38,149 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 17:56:38,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:38,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:56:38,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:56:38,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:56:38,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:38,179 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-28 17:56:38,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:38,219 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-28 17:56:38,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:56:38,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-28 17:56:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:38,236 INFO L225 Difference]: With dead ends: 79 [2018-11-28 17:56:38,236 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 17:56:38,243 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 17:56:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 17:56:38,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-28 17:56:38,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 17:56:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-28 17:56:38,316 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-28 17:56:38,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:38,316 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-28 17:56:38,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:56:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-28 17:56:38,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 17:56:38,325 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:38,325 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 17:56:38,325 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:38,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:38,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2099930979, now seen corresponding path program 1 times [2018-11-28 17:56:38,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:38,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:38,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:38,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:38,586 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 17:56:38,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:38,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:38,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:38,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:38,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:38,589 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-28 17:56:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:38,659 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-28 17:56:38,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:38,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-28 17:56:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:38,664 INFO L225 Difference]: With dead ends: 59 [2018-11-28 17:56:38,664 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 17:56:38,665 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 17:56:38,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-28 17:56:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 17:56:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 17:56:38,677 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-28 17:56:38,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:38,677 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 17:56:38,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:38,677 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 17:56:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 17:56:38,679 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:38,679 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:38,679 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:38,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:38,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2011933537, now seen corresponding path program 1 times [2018-11-28 17:56:38,680 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:38,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:38,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:38,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:38,825 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 17:56:38,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:38,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:38,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:38,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:38,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:38,827 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-28 17:56:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:38,903 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-28 17:56:38,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:38,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-28 17:56:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:38,907 INFO L225 Difference]: With dead ends: 63 [2018-11-28 17:56:38,908 INFO L226 Difference]: Without dead ends: 48 [2018-11-28 17:56:38,910 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:38,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-28 17:56:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-28 17:56:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 17:56:38,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-28 17:56:38,927 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-28 17:56:38,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:38,930 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-28 17:56:38,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-28 17:56:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 17:56:38,932 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:38,932 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:38,932 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:38,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:38,933 INFO L82 PathProgramCache]: Analyzing trace with hash 486082400, now seen corresponding path program 1 times [2018-11-28 17:56:38,933 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:56:38,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:56:38,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:38,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:56:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:56:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:56:39,030 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:56:39,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:56:39 BoogieIcfgContainer [2018-11-28 17:56:39,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:56:39,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:56:39,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:56:39,068 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:56:39,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:37" (3/4) ... [2018-11-28 17:56:39,072 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 17:56:39,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:56:39,074 INFO L168 Benchmark]: Toolchain (without parser) took 2311.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -81.6 MB). Peak memory consumption was 32.1 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,076 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:39,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.31 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.24 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,079 INFO L168 Benchmark]: Boogie Preprocessor took 35.73 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:39,080 INFO L168 Benchmark]: RCFGBuilder took 702.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,082 INFO L168 Benchmark]: TraceAbstraction took 1214.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 11.5 GB. [2018-11-28 17:56:39,084 INFO L168 Benchmark]: Witness Printer took 5.34 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:56:39,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 317.31 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.24 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 936.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.73 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 702.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1214.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.3 MB). Peak memory consumption was 41.3 MB. Max. memory is 11.5 GB. * Witness Printer took 5.34 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; VAL [x=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0, \old(y)=4293918727] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; VAL [\old(x)=0, \result=0, lsw=1, msw=4293918721, x=0] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4293918727, __fpclassify_double(x)=0, x=0, y=4293918727] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; VAL [\old(x)=0, \old(y)=4293918727, \result=4293918727, x=0, y=4293918727] [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4293918727, x=0, y=4293918727] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4293918727, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4293918727] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=4293918727, x=0, y=4293918727] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 17:56:41,512 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2018-11-28 17:56:41,528 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:56:41,530 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:56:41,531 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:56:41,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:56:41,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:56:41,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:56:41,540 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:56:41,544 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:56:41,548 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:56:41,549 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:56:41,550 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:56:41,553 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:56:41,554 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:56:41,559 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:56:41,563 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:56:41,566 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:56:41,568 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:56:41,571 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:56:41,575 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:56:41,578 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:56:41,578 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:56:41,579 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:56:41,580 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:56:41,580 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:56:41,585 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:56:41,586 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:56:41,588 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:56:41,589 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:56:41,589 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:56:41,589 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:56:41,590 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:56:41,590 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:56:41,591 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 17:56:41,614 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:56:41,615 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:56:41,616 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:56:41,616 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:56:41,617 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:56:41,617 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:56:41,617 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:56:41,618 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:56:41,618 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:56:41,618 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:56:41,618 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:56:41,618 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:56:41,618 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:56:41,620 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:56:41,621 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 17:56:41,621 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 17:56:41,621 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:56:41,621 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:56:41,622 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:56:41,622 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:56:41,622 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:56:41,622 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:56:41,622 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:56:41,623 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:56:41,623 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:56:41,623 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:56:41,623 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:56:41,623 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:56:41,624 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 17:56:41,625 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:56:41,626 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 17:56:41,626 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 17:56:41,626 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 -> 4284cb37841cd94fe17da64cc250a8a1e69c6375 [2018-11-28 17:56:41,663 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:56:41,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:56:41,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:56:41,684 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:56:41,685 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:56:41,686 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-28 17:56:41,749 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df359f549/3c8be288af444eb992e8c89ec9fcd33a/FLAG582e74ee4 [2018-11-28 17:56:42,252 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:56:42,253 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-11-28 17:56:42,262 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df359f549/3c8be288af444eb992e8c89ec9fcd33a/FLAG582e74ee4 [2018-11-28 17:56:42,613 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df359f549/3c8be288af444eb992e8c89ec9fcd33a [2018-11-28 17:56:42,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:56:42,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:56:42,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:42,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:56:42,624 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:56:42,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:42,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515fc475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42, skipping insertion in model container [2018-11-28 17:56:42,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:42,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:56:42,660 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:56:42,861 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:42,867 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:56:42,905 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:56:42,950 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:56:42,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42 WrapperNode [2018-11-28 17:56:42,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:56:42,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:42,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:56:42,952 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:56:42,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:42,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:42,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:56:42,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:56:42,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:56:42,986 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:56:42,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:42,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:43,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:43,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:43,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:43,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:43,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (1/1) ... [2018-11-28 17:56:43,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:56:43,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:56:43,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:56:43,102 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:56:43,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (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 17:56:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-28 17:56:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-11-28 17:56:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-11-28 17:56:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:56:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:56:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-11-28 17:56:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-11-28 17:56:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:56:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:56:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 17:56:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 17:56:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:56:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:56:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-11-28 17:56:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-11-28 17:56:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 17:56:43,391 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 17:56:43,619 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 17:56:43,804 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:56:43,804 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 17:56:43,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:43 BoogieIcfgContainer [2018-11-28 17:56:43,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:56:43,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:56:43,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:56:43,809 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:56:43,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:56:42" (1/3) ... [2018-11-28 17:56:43,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e88e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:43, skipping insertion in model container [2018-11-28 17:56:43,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:56:42" (2/3) ... [2018-11-28 17:56:43,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332e88e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:56:43, skipping insertion in model container [2018-11-28 17:56:43,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:43" (3/3) ... [2018-11-28 17:56:43,812 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-11-28 17:56:43,821 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:56:43,829 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 17:56:43,847 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 17:56:43,883 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:56:43,884 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:56:43,885 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:56:43,885 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:56:43,885 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:56:43,885 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:56:43,886 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:56:43,886 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:56:43,886 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:56:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-28 17:56:43,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 17:56:43,914 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:43,915 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:43,918 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:43,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:43,925 INFO L82 PathProgramCache]: Analyzing trace with hash -397395125, now seen corresponding path program 1 times [2018-11-28 17:56:43,930 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:43,931 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 17:56:43,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:44,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:44,029 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 17:56:44,029 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:44,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:44,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 17:56:44,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 17:56:44,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 17:56:44,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:44,064 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-28 17:56:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:44,089 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-28 17:56:44,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 17:56:44,091 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-28 17:56:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:44,102 INFO L225 Difference]: With dead ends: 75 [2018-11-28 17:56:44,102 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 17:56:44,106 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 17:56:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 17:56:44,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-28 17:56:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 17:56:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-28 17:56:44,153 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-28 17:56:44,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:44,153 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-28 17:56:44,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 17:56:44,153 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-28 17:56:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 17:56:44,155 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:44,156 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:44,156 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:44,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:44,156 INFO L82 PathProgramCache]: Analyzing trace with hash -2145002868, now seen corresponding path program 1 times [2018-11-28 17:56:44,157 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:44,157 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 17:56:44,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:44,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:44,354 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 17:56:44,354 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:44,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:44,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:44,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:44,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:44,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:44,373 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-28 17:56:44,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:44,454 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-28 17:56:44,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:44,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-28 17:56:44,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:44,458 INFO L225 Difference]: With dead ends: 56 [2018-11-28 17:56:44,458 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 17:56:44,460 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 17:56:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 17:56:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 17:56:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-28 17:56:44,470 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-28 17:56:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:44,471 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-28 17:56:44,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-28 17:56:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 17:56:44,472 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:44,472 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 17:56:44,473 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:44,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1859452024, now seen corresponding path program 1 times [2018-11-28 17:56:44,474 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:44,474 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 17:56:44,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:44,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:45,176 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 17:56:45,177 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:45,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:45,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:56:45,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:56:45,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:56:45,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:56:45,197 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-28 17:56:46,196 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-11-28 17:56:47,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:47,068 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-11-28 17:56:47,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:56:47,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-28 17:56:47,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:47,072 INFO L225 Difference]: With dead ends: 63 [2018-11-28 17:56:47,072 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 17:56:47,073 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 17:56:47,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 17:56:47,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 17:56:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 17:56:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 17:56:47,081 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-11-28 17:56:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:47,082 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 17:56:47,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:56:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 17:56:47,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 17:56:47,083 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:47,083 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 17:56:47,084 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:47,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:47,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1911602824, now seen corresponding path program 1 times [2018-11-28 17:56:47,085 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:47,085 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 17:56:47,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:47,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:47,186 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 17:56:47,186 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:47,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:47,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:47,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:47,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:47,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:47,201 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-11-28 17:56:47,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:47,314 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-11-28 17:56:47,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:47,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-28 17:56:47,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:47,317 INFO L225 Difference]: With dead ends: 61 [2018-11-28 17:56:47,317 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 17:56:47,317 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 17:56:47,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-28 17:56:47,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 17:56:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-11-28 17:56:47,346 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-11-28 17:56:47,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:47,346 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-11-28 17:56:47,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:47,346 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-11-28 17:56:47,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 17:56:47,350 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:47,350 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 17:56:47,351 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:47,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:47,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2064132100, now seen corresponding path program 1 times [2018-11-28 17:56:47,352 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:47,352 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 17:56:47,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:47,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:47,758 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 17:56:47,758 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:47,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:47,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:56:47,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:56:47,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:56:47,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:56:47,770 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-11-28 17:56:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:51,206 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-28 17:56:51,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:56:51,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-28 17:56:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:51,210 INFO L225 Difference]: With dead ends: 62 [2018-11-28 17:56:51,210 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 17:56:51,211 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 17:56:51,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 17:56:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-11-28 17:56:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 17:56:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-28 17:56:51,218 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-11-28 17:56:51,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:51,218 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-28 17:56:51,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:56:51,218 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-28 17:56:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 17:56:51,220 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:51,220 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:51,220 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:51,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:51,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1438845801, now seen corresponding path program 1 times [2018-11-28 17:56:51,221 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:51,221 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 17:56:51,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:51,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 17:56:51,328 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:51,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:51,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:51,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:51,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:51,342 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-28 17:56:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:51,374 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-28 17:56:51,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:51,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-28 17:56:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:51,376 INFO L225 Difference]: With dead ends: 58 [2018-11-28 17:56:51,376 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 17:56:51,377 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:51,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 17:56:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 17:56:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 17:56:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-11-28 17:56:51,384 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-11-28 17:56:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:51,384 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-11-28 17:56:51,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-11-28 17:56:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 17:56:51,386 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:51,386 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:51,386 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:51,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:51,387 INFO L82 PathProgramCache]: Analyzing trace with hash 394703345, now seen corresponding path program 1 times [2018-11-28 17:56:51,387 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:51,387 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 17:56:51,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:51,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 17:56:51,716 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:51,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:51,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:56:51,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:56:51,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:56:51,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:56:51,730 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-11-28 17:56:53,661 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-28 17:56:53,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:53,713 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-11-28 17:56:53,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:56:53,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-28 17:56:53,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:53,716 INFO L225 Difference]: With dead ends: 63 [2018-11-28 17:56:53,716 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 17:56:53,717 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 17:56:53,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 17:56:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-11-28 17:56:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 17:56:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-28 17:56:53,730 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-11-28 17:56:53,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:53,732 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-28 17:56:53,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:56:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-28 17:56:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 17:56:53,734 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:53,734 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:53,735 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:53,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:53,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1599971557, now seen corresponding path program 1 times [2018-11-28 17:56:53,735 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:53,736 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:53,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:53,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 17:56:53,863 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:53,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:53,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 17:56:53,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 17:56:53,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 17:56:53,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:53,875 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-11-28 17:56:53,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:53,969 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-11-28 17:56:53,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 17:56:53,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-28 17:56:53,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:53,971 INFO L225 Difference]: With dead ends: 59 [2018-11-28 17:56:53,971 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 17:56:53,973 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 17:56:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 17:56:53,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-11-28 17:56:53,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 17:56:53,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-11-28 17:56:53,985 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-11-28 17:56:53,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:53,985 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-11-28 17:56:53,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 17:56:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-11-28 17:56:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 17:56:53,986 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:53,989 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:53,989 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:53,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:53,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1200719566, now seen corresponding path program 1 times [2018-11-28 17:56:53,990 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:53,990 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:53,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:54,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 17:56:54,235 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:54,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:54,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 17:56:54,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 17:56:54,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 17:56:54,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 17:56:54,255 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-11-28 17:56:54,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:54,467 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-11-28 17:56:54,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 17:56:54,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-28 17:56:54,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:54,469 INFO L225 Difference]: With dead ends: 57 [2018-11-28 17:56:54,469 INFO L226 Difference]: Without dead ends: 41 [2018-11-28 17:56:54,470 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 17:56:54,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-28 17:56:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-28 17:56:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 17:56:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-11-28 17:56:54,475 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-11-28 17:56:54,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:54,475 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-11-28 17:56:54,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 17:56:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-11-28 17:56:54,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 17:56:54,476 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:54,476 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:54,477 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:54,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:54,477 INFO L82 PathProgramCache]: Analyzing trace with hash 391372940, now seen corresponding path program 1 times [2018-11-28 17:56:54,477 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:54,478 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:54,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:54,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 17:56:54,722 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:54,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:54,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:56:54,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:56:54,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:56:54,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:56:54,734 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-11-28 17:56:55,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:55,192 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-11-28 17:56:55,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:56:55,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-28 17:56:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:55,195 INFO L225 Difference]: With dead ends: 48 [2018-11-28 17:56:55,195 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 17:56:55,196 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-28 17:56:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 17:56:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-28 17:56:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-28 17:56:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-11-28 17:56:55,201 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-11-28 17:56:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:55,202 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-11-28 17:56:55,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:56:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-11-28 17:56:55,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 17:56:55,203 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:55,203 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:55,204 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:55,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:55,204 INFO L82 PathProgramCache]: Analyzing trace with hash -477473555, now seen corresponding path program 1 times [2018-11-28 17:56:55,204 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:55,205 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:55,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:55,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 17:56:55,782 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:55,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:55,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 17:56:55,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 17:56:55,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 17:56:55,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 17:56:55,803 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-11-28 17:56:56,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:56,951 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-11-28 17:56:56,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 17:56:56,953 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-11-28 17:56:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:56,954 INFO L225 Difference]: With dead ends: 62 [2018-11-28 17:56:56,954 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 17:56:56,955 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-28 17:56:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 17:56:56,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 17:56:56,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 17:56:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-11-28 17:56:56,960 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-11-28 17:56:56,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:56,960 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-11-28 17:56:56,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 17:56:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-11-28 17:56:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 17:56:56,962 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:56:56,962 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:56:56,962 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:56:56,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:56:56,962 INFO L82 PathProgramCache]: Analyzing trace with hash -25386389, now seen corresponding path program 1 times [2018-11-28 17:56:56,963 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:56:56,963 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-11-28 17:56:56,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:56:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:56:57,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:56:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-28 17:56:57,452 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:56:57,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:56:57,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-28 17:56:57,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 17:56:57,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 17:56:57,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-28 17:56:57,465 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-11-28 17:56:58,683 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-11-28 17:56:58,881 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-11-28 17:56:59,416 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-11-28 17:56:59,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:56:59,494 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-11-28 17:56:59,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 17:56:59,495 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-11-28 17:56:59,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:56:59,496 INFO L225 Difference]: With dead ends: 37 [2018-11-28 17:56:59,496 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 17:56:59,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-11-28 17:56:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 17:56:59,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 17:56:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 17:56:59,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 17:56:59,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-11-28 17:56:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:56:59,498 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 17:56:59,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 17:56:59,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 17:56:59,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 17:56:59,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 17:56:59,835 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-28 17:57:00,004 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 21 [2018-11-28 17:57:00,007 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 42) no Hoare annotation was computed. [2018-11-28 17:57:00,007 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 18 43) no Hoare annotation was computed. [2018-11-28 17:57:00,007 INFO L448 ceAbstractionStarter]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2018-11-28 17:57:00,007 INFO L444 ceAbstractionStarter]: At program point L21-2(lines 21 26) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-11-28 17:57:00,007 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 18 43) no Hoare annotation was computed. [2018-11-28 17:57:00,007 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 18 43) the Hoare annotation is: true [2018-11-28 17:57:00,008 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 42) no Hoare annotation was computed. [2018-11-28 17:57:00,008 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 42) no Hoare annotation was computed. [2018-11-28 17:57:00,008 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 18 43) no Hoare annotation was computed. [2018-11-28 17:57:00,008 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:57:00,008 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:57:00,008 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:57:00,008 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 54 64) no Hoare annotation was computed. [2018-11-28 17:57:00,008 INFO L448 ceAbstractionStarter]: For program point L57-1(lines 57 61) no Hoare annotation was computed. [2018-11-28 17:57:00,008 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 54 64) no Hoare annotation was computed. [2018-11-28 17:57:00,008 INFO L444 ceAbstractionStarter]: At program point L57-2(lines 57 61) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-11-28 17:57:00,009 INFO L448 ceAbstractionStarter]: For program point L57-3(lines 57 61) no Hoare annotation was computed. [2018-11-28 17:57:00,009 INFO L451 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 54 64) the Hoare annotation is: true [2018-11-28 17:57:00,009 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:57:00,009 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 17:57:00,009 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:57:00,009 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:57:00,009 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 66 85) the Hoare annotation is: true [2018-11-28 17:57:00,009 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2018-11-28 17:57:00,010 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 66 85) no Hoare annotation was computed. [2018-11-28 17:57:00,010 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-28 17:57:00,010 INFO L448 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-28 17:57:00,010 INFO L444 ceAbstractionStarter]: At program point L79-1(line 79) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= main_~res~0 .cse0) (= (_ +zero 11 53) main_~x~0) |main_#t~short11| (= main_~y~0 .cse0))) [2018-11-28 17:57:00,010 INFO L448 ceAbstractionStarter]: For program point L79-2(line 79) no Hoare annotation was computed. [2018-11-28 17:57:00,010 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 66 85) no Hoare annotation was computed. [2018-11-28 17:57:00,010 INFO L444 ceAbstractionStarter]: At program point L76(line 76) the Hoare annotation is: (and (= (_ +zero 11 53) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 11 53)))) [2018-11-28 17:57:00,010 INFO L448 ceAbstractionStarter]: For program point L76-1(line 76) no Hoare annotation was computed. [2018-11-28 17:57:00,010 INFO L448 ceAbstractionStarter]: For program point L79-4(lines 79 82) no Hoare annotation was computed. [2018-11-28 17:57:00,010 INFO L448 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 45 52) no Hoare annotation was computed. [2018-11-28 17:57:00,011 INFO L451 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 45 52) the Hoare annotation is: true [2018-11-28 17:57:00,011 INFO L448 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 45 52) no Hoare annotation was computed. [2018-11-28 17:57:00,011 INFO L448 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2018-11-28 17:57:00,011 INFO L448 ceAbstractionStarter]: For program point L51-2(line 51) no Hoare annotation was computed. [2018-11-28 17:57:00,011 INFO L444 ceAbstractionStarter]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= fmin_double_~x |fmin_double_#in~x|))) (or (and (exists ((v_prenex_10 (_ BitVec 64))) (and (not (bvule ((_ extract 63 32) v_prenex_10) (_ bv1048575 32))) (= |fmin_double_#in~x| (fp ((_ extract 63 63) v_prenex_10) ((_ extract 62 52) v_prenex_10) ((_ extract 51 0) v_prenex_10))))) .cse0) (and (= fmin_double_~y |fmin_double_#in~y|) .cse0))) [2018-11-28 17:57:00,011 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 48 49) no Hoare annotation was computed. [2018-11-28 17:57:00,011 INFO L444 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-11-28 17:57:00,011 INFO L448 ceAbstractionStarter]: For program point L46-1(lines 46 47) no Hoare annotation was computed. [2018-11-28 17:57:00,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:57:00 BoogieIcfgContainer [2018-11-28 17:57:00,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:57:00,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:57:00,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:57:00,027 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:57:00,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:56:43" (3/4) ... [2018-11-28 17:57:00,032 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 17:57:00,039 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-11-28 17:57:00,039 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 17:57:00,039 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-11-28 17:57:00,040 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 17:57:00,040 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-11-28 17:57:00,045 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-11-28 17:57:00,046 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-28 17:57:00,046 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 17:57:00,075 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 17:57:00,076 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-28 17:57:00,118 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 17:57:00,119 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:57:00,121 INFO L168 Benchmark]: Toolchain (without parser) took 17502.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -125.2 MB). Peak memory consumption was 61.9 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:00,126 INFO L168 Benchmark]: CDTParser took 0.13 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 17:57:00,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.68 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 933.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:00,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.73 ms. Allocated memory is still 1.0 GB. Free memory was 933.9 MB in the beginning and 928.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:00,130 INFO L168 Benchmark]: Boogie Preprocessor took 115.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 928.5 MB in the beginning and 1.1 GB in the end (delta: -174.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:00,130 INFO L168 Benchmark]: RCFGBuilder took 703.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:00,131 INFO L168 Benchmark]: TraceAbstraction took 16221.02 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.8 MB). Peak memory consumption was 76.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:00,135 INFO L168 Benchmark]: Witness Printer took 92.53 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: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:57:00,147 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 330.68 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 933.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.73 ms. Allocated memory is still 1.0 GB. Free memory was 933.9 MB in the beginning and 928.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 115.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.3 MB). Free memory was 928.5 MB in the beginning and 1.1 GB in the end (delta: -174.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 703.72 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16221.02 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.8 MB). Peak memory consumption was 76.7 MB. Max. memory is 11.5 GB. * Witness Printer took 92.53 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: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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: 21]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 16.1s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 11.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 479 SDtfs, 187 SDslu, 1586 SDs, 0 SdLazy, 605 SolverSat, 20 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 69 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 333 ConstructedInterpolants, 40 QuantifiedInterpolants, 43044 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1082 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...