./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1092b_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1092b_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 2e3b677629e69b083ff740542124e952dcae7545 ................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/float-newlib/float_req_bl_1092b_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 2e3b677629e69b083ff740542124e952dcae7545 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 18:03:52,116 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:03:52,117 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:03:52,129 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:03:52,130 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:03:52,131 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:03:52,132 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:03:52,134 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:03:52,136 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:03:52,137 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:03:52,138 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:03:52,138 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:03:52,139 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:03:52,140 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:03:52,141 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:03:52,142 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:03:52,143 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:03:52,145 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:03:52,147 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:03:52,149 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:03:52,150 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:03:52,152 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:03:52,154 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:03:52,155 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:03:52,155 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:03:52,156 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:03:52,157 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:03:52,158 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:03:52,159 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:03:52,160 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:03:52,160 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:03:52,161 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:03:52,161 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:03:52,162 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:03:52,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:03:52,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:03:52,164 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:03:52,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:03:52,180 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:03:52,181 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:03:52,181 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:03:52,182 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:03:52,182 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:03:52,182 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:03:52,182 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:03:52,183 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:03:52,183 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:03:52,183 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:03:52,183 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:03:52,183 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:03:52,183 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:03:52,184 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:03:52,184 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:03:52,184 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:03:52,184 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:03:52,184 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:03:52,184 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:03:52,186 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:03:52,187 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:03:52,187 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:03:52,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:52,187 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:03:52,187 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:03:52,187 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:03:52,188 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:03:52,188 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:03:52,188 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:03:52,188 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 -> 2e3b677629e69b083ff740542124e952dcae7545 [2018-11-28 18:03:52,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:03:52,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:03:52,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:03:52,259 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:03:52,260 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:03:52,261 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-11-28 18:03:52,336 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c59f6bf5a/97db18e2d106471ebbe44c93d8dd210d/FLAG044f0e01b [2018-11-28 18:03:52,822 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:03:52,823 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-11-28 18:03:52,830 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c59f6bf5a/97db18e2d106471ebbe44c93d8dd210d/FLAG044f0e01b [2018-11-28 18:03:53,182 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c59f6bf5a/97db18e2d106471ebbe44c93d8dd210d [2018-11-28 18:03:53,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:03:53,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:03:53,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:53,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:03:53,194 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:03:53,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2565b023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53, skipping insertion in model container [2018-11-28 18:03:53,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:03:53,234 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:03:53,516 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:53,523 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:03:53,560 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:53,590 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:03:53,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53 WrapperNode [2018-11-28 18:03:53,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:53,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:53,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:03:53,593 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:03:53,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,631 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:53,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:03:53,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:03:53,632 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:03:53,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... [2018-11-28 18:03:53,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:03:53,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:03:53,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:03:53,693 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:03:53,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:53,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-28 18:03:53,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 18:03:53,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:03:53,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:03:53,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-28 18:03:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:03:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:03:53,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:03:53,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 18:03:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:03:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:03:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-11-28 18:03:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-11-28 18:03:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:03:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:03:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:03:54,402 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:03:54,403 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 18:03:54,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:54 BoogieIcfgContainer [2018-11-28 18:03:54,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:03:54,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:03:54,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:03:54,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:03:54,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:03:53" (1/3) ... [2018-11-28 18:03:54,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3321bb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:54, skipping insertion in model container [2018-11-28 18:03:54,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:53" (2/3) ... [2018-11-28 18:03:54,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3321bb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:54, skipping insertion in model container [2018-11-28 18:03:54,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:54" (3/3) ... [2018-11-28 18:03:54,412 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092b_true-unreach-call.c [2018-11-28 18:03:54,421 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:03:54,429 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:03:54,446 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:03:54,479 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:03:54,479 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:03:54,480 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:03:54,480 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:03:54,480 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:03:54,480 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:03:54,481 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:03:54,481 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:03:54,481 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:03:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 18:03:54,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 18:03:54,507 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:54,508 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:54,509 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:54,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:54,515 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2018-11-28 18:03:54,517 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:03:54,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:03:54,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:54,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:54,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:03:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:03:54,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:03:54,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:03:54,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:03:54,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:03:54,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:54,701 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 18:03:54,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:03:54,726 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-11-28 18:03:54,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:03:54,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-28 18:03:54,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:03:54,737 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:03:54,737 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:03:54,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:03:54,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:03:54,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 18:03:54,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 18:03:54,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-11-28 18:03:54,783 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-11-28 18:03:54,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:03:54,783 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-11-28 18:03:54,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:03:54,783 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-11-28 18:03:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 18:03:54,784 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:03:54,785 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:03:54,785 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:03:54,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:03:54,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2018-11-28 18:03:54,786 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:03:54,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:03:54,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:54,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:03:54,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:03:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:03:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:03:54,923 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:03:54,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:03:54 BoogieIcfgContainer [2018-11-28 18:03:54,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:03:54,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:03:54,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:03:54,970 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:03:54,971 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:54" (3/4) ... [2018-11-28 18:03:54,975 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:03:54,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:03:54,976 INFO L168 Benchmark]: Toolchain (without parser) took 1789.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -114.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:54,978 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 18:03:54,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.48 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 939.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:54,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.00 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:54,980 INFO L168 Benchmark]: Boogie Preprocessor took 60.38 ms. Allocated memory is still 1.0 GB. Free memory was 939.3 MB in the beginning and 933.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:54,981 INFO L168 Benchmark]: RCFGBuilder took 711.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 933.9 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:54,982 INFO L168 Benchmark]: TraceAbstraction took 563.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:03:54,983 INFO L168 Benchmark]: Witness Printer took 6.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:03:54,988 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 401.48 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 939.3 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 39.00 ms. Allocated memory is still 1.0 GB. Free memory is still 939.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.38 ms. Allocated memory is still 1.0 GB. Free memory was 939.3 MB in the beginning and 933.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 711.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 933.9 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 563.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of bitwiseAnd at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; VAL [\old(huge_ceil)=132, huge_ceil=1000000000000000000000000000000] [L76] float x = 0.0f; VAL [huge_ceil=1000000000000000000000000000000, x=0] [L77] CALL, EXPR ceil_float(x) VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000, x=0] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000, i=-36028794871480321, i0=2, j0=128, x=0] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000, i=-36028794871480321, i0=2, j0=128, x=0] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=0, huge_ceil=1000000000000000000000000000000, i=-36028794871480321, i0=2, j0=128, x=0] [L77] RET, EXPR ceil_float(x) VAL [ceil_float(x)=131, huge_ceil=1000000000000000000000000000000, x=0] [L77] float res = ceil_float(x); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [huge_ceil=1000000000000000000000000000000, res=131, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000, res=131, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 52 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 18:03:57,317 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:03:57,319 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:03:57,331 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:03:57,332 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:03:57,333 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:03:57,334 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:03:57,337 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:03:57,339 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:03:57,340 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:03:57,341 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:03:57,341 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:03:57,342 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:03:57,344 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:03:57,345 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:03:57,346 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:03:57,347 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:03:57,349 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:03:57,351 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:03:57,353 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:03:57,354 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:03:57,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:03:57,359 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:03:57,359 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:03:57,359 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:03:57,360 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:03:57,362 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:03:57,363 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:03:57,364 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:03:57,365 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:03:57,366 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:03:57,366 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:03:57,367 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:03:57,367 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:03:57,368 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:03:57,369 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:03:57,370 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:03:57,386 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:03:57,387 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:03:57,388 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:03:57,388 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:03:57,388 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:03:57,389 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:03:57,389 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:03:57,389 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:03:57,389 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:03:57,390 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:03:57,390 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:03:57,390 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:03:57,390 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:03:57,390 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:03:57,391 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:03:57,391 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:03:57,391 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:03:57,391 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:03:57,392 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:03:57,394 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:03:57,394 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:03:57,394 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:03:57,395 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:03:57,395 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:03:57,395 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:57,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:03:57,395 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:03:57,395 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:03:57,398 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:03:57,398 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:03:57,398 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:03:57,398 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:03:57,399 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 -> 2e3b677629e69b083ff740542124e952dcae7545 [2018-11-28 18:03:57,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:03:57,480 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:03:57,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:03:57,486 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:03:57,487 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:03:57,490 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-11-28 18:03:57,562 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91324e8ed/a9806ba885ed4f98ab3dc8c17385ebe4/FLAG39588a5d3 [2018-11-28 18:03:58,100 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:03:58,101 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1092b_true-unreach-call.c [2018-11-28 18:03:58,109 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91324e8ed/a9806ba885ed4f98ab3dc8c17385ebe4/FLAG39588a5d3 [2018-11-28 18:03:58,431 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91324e8ed/a9806ba885ed4f98ab3dc8c17385ebe4 [2018-11-28 18:03:58,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:03:58,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:03:58,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:58,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:03:58,457 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:03:58,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,462 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 06:03:58, skipping insertion in model container [2018-11-28 18:03:58,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:03:58,497 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:03:58,724 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:58,731 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:03:58,769 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:03:58,807 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:03:58,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58 WrapperNode [2018-11-28 18:03:58,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:03:58,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:58,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:03:58,809 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:03:58,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:03:58,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:03:58,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:03:58,849 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:03:58,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:58,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... [2018-11-28 18:03:59,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:03:59,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:03:59,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:03:59,008 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:03:59,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:03:59,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:03:59,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:03:59,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 18:03:59,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-28 18:03:59,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:03:59,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:03:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-28 18:03:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:03:59,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:03:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2018-11-28 18:03:59,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2018-11-28 18:03:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-28 18:03:59,068 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-28 18:03:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-28 18:03:59,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-28 18:03:59,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 18:03:59,692 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:03:59,962 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 18:03:59,973 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:03:59,974 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 18:03:59,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:59 BoogieIcfgContainer [2018-11-28 18:03:59,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:03:59,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:03:59,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:03:59,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:03:59,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:03:58" (1/3) ... [2018-11-28 18:03:59,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213dcd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:59, skipping insertion in model container [2018-11-28 18:03:59,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:03:58" (2/3) ... [2018-11-28 18:03:59,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213dcd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:03:59, skipping insertion in model container [2018-11-28 18:03:59,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:59" (3/3) ... [2018-11-28 18:03:59,984 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092b_true-unreach-call.c [2018-11-28 18:03:59,996 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:04:00,004 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:04:00,023 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:04:00,055 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:04:00,056 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:04:00,056 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:04:00,056 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:04:00,057 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:04:00,057 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:04:00,057 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:04:00,057 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:04:00,057 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:04:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-28 18:04:00,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 18:04:00,081 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:00,082 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:00,085 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:00,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:00,090 INFO L82 PathProgramCache]: Analyzing trace with hash 263185431, now seen corresponding path program 1 times [2018-11-28 18:04:00,094 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:00,095 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:00,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:00,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:00,201 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:00,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:00,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:04:00,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:04:00,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:04:00,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:00,238 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-28 18:04:00,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:00,267 INFO L93 Difference]: Finished difference Result 78 states and 111 transitions. [2018-11-28 18:04:00,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:04:00,269 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-28 18:04:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:00,280 INFO L225 Difference]: With dead ends: 78 [2018-11-28 18:04:00,281 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:04:00,285 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:04:00,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:04:00,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-28 18:04:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 18:04:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2018-11-28 18:04:00,331 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 18 [2018-11-28 18:04:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:00,332 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2018-11-28 18:04:00,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:04:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2018-11-28 18:04:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 18:04:00,333 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:00,333 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:00,334 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:00,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:00,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1491196875, now seen corresponding path program 1 times [2018-11-28 18:04:00,335 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:00,335 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:00,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:00,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:00,769 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:00,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:00,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:04:00,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:04:00,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:04:00,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:04:00,791 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 7 states. [2018-11-28 18:04:01,318 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-28 18:04:02,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:02,392 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-11-28 18:04:02,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 18:04:02,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-28 18:04:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:02,400 INFO L225 Difference]: With dead ends: 60 [2018-11-28 18:04:02,402 INFO L226 Difference]: Without dead ends: 44 [2018-11-28 18:04:02,403 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:04:02,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-28 18:04:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-11-28 18:04:02,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-28 18:04:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-11-28 18:04:02,417 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-11-28 18:04:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:02,418 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-11-28 18:04:02,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:04:02,418 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-11-28 18:04:02,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 18:04:02,420 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:02,420 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:02,420 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:02,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:02,422 INFO L82 PathProgramCache]: Analyzing trace with hash 664765980, now seen corresponding path program 1 times [2018-11-28 18:04:02,422 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:02,422 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:02,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:02,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:02,630 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:02,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:02,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:04:02,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:04:02,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:04:02,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:04:02,644 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 7 states. [2018-11-28 18:04:04,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:04,169 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-11-28 18:04:04,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 18:04:04,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-28 18:04:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:04,175 INFO L225 Difference]: With dead ends: 67 [2018-11-28 18:04:04,176 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:04:04,177 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:04:04,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-11-28 18:04:04,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:04:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-11-28 18:04:04,184 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2018-11-28 18:04:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:04,185 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-11-28 18:04:04,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:04:04,185 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-11-28 18:04:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 18:04:04,186 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:04,186 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:04,186 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:04,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:04,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1845640621, now seen corresponding path program 1 times [2018-11-28 18:04:04,189 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:04,190 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:04,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:04,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:05,772 WARN L180 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 18:04:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:05,789 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:05,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:05,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:04:05,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:04:05,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:04:05,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:04:05,810 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2018-11-28 18:04:07,251 WARN L180 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-28 18:04:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:07,680 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2018-11-28 18:04:07,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:04:07,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-28 18:04:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:07,686 INFO L225 Difference]: With dead ends: 52 [2018-11-28 18:04:07,687 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 18:04:07,687 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:04:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 18:04:07,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 18:04:07,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:04:07,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-11-28 18:04:07,694 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2018-11-28 18:04:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:07,694 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-11-28 18:04:07,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:04:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-11-28 18:04:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 18:04:07,695 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:07,696 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:07,696 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:07,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:07,696 INFO L82 PathProgramCache]: Analyzing trace with hash -530743544, now seen corresponding path program 1 times [2018-11-28 18:04:07,697 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:07,697 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:07,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:07,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:07,874 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:07,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:07,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 18:04:07,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 18:04:07,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 18:04:07,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 18:04:07,886 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 6 states. [2018-11-28 18:04:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:08,270 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-11-28 18:04:08,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 18:04:08,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-28 18:04:08,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:08,272 INFO L225 Difference]: With dead ends: 57 [2018-11-28 18:04:08,272 INFO L226 Difference]: Without dead ends: 39 [2018-11-28 18:04:08,273 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:04:08,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-28 18:04:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-11-28 18:04:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:04:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-11-28 18:04:08,280 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 24 [2018-11-28 18:04:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:08,280 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-11-28 18:04:08,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 18:04:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-11-28 18:04:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:04:08,281 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:08,281 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:08,282 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:08,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:08,282 INFO L82 PathProgramCache]: Analyzing trace with hash 943724535, now seen corresponding path program 1 times [2018-11-28 18:04:08,282 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:08,282 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:08,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:08,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:08,502 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:08,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:08,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 18:04:08,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 18:04:08,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 18:04:08,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 18:04:08,515 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 7 states. [2018-11-28 18:04:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:09,104 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2018-11-28 18:04:09,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:04:09,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-11-28 18:04:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:09,107 INFO L225 Difference]: With dead ends: 52 [2018-11-28 18:04:09,107 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 18:04:09,108 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-28 18:04:09,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 18:04:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 18:04:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:04:09,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-11-28 18:04:09,114 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2018-11-28 18:04:09,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:09,114 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-11-28 18:04:09,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 18:04:09,114 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-11-28 18:04:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 18:04:09,116 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:09,116 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:09,116 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:09,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:09,117 INFO L82 PathProgramCache]: Analyzing trace with hash 550697525, now seen corresponding path program 1 times [2018-11-28 18:04:09,117 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:09,117 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:09,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:09,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:09,305 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:09,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:09,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 18:04:09,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 18:04:09,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 18:04:09,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-28 18:04:09,318 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 8 states. [2018-11-28 18:04:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:09,690 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2018-11-28 18:04:09,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 18:04:09,691 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-28 18:04:09,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:09,692 INFO L225 Difference]: With dead ends: 37 [2018-11-28 18:04:09,692 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 18:04:09,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-28 18:04:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 18:04:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 18:04:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 18:04:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2018-11-28 18:04:09,699 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 25 [2018-11-28 18:04:09,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:09,699 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2018-11-28 18:04:09,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 18:04:09,699 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2018-11-28 18:04:09,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 18:04:09,700 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:04:09,701 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:04:09,701 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:04:09,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:04:09,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1832884299, now seen corresponding path program 1 times [2018-11-28 18:04:09,702 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:04:09,702 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-28 18:04:09,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:04:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:04:09,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:04:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:04:10,055 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:04:10,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:04:10,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-28 18:04:10,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 18:04:10,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 18:04:10,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-28 18:04:10,068 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand 13 states. [2018-11-28 18:04:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:04:10,856 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2018-11-28 18:04:10,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 18:04:10,857 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2018-11-28 18:04:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:04:10,858 INFO L225 Difference]: With dead ends: 34 [2018-11-28 18:04:10,858 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 18:04:10,859 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-11-28 18:04:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 18:04:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 18:04:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 18:04:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 18:04:10,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-11-28 18:04:10,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:04:10,860 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 18:04:10,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 18:04:10,860 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 18:04:10,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 18:04:10,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 18:04:11,153 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-11-28 18:04:11,257 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:04:11,257 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:04:11,257 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:04:11,257 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 18:04:11,257 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0) [2018-11-28 18:04:11,258 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 18:04:11,258 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 18:04:11,258 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 68 86) the Hoare annotation is: true [2018-11-28 18:04:11,258 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 68 86) no Hoare annotation was computed. [2018-11-28 18:04:11,258 INFO L448 ceAbstractionStarter]: For program point L81(line 81) no Hoare annotation was computed. [2018-11-28 18:04:11,258 INFO L448 ceAbstractionStarter]: For program point L80(line 80) no Hoare annotation was computed. [2018-11-28 18:04:11,258 INFO L444 ceAbstractionStarter]: At program point L80-1(line 80) the Hoare annotation is: (or (and |main_#t~short8| (= (_ +zero 8 24) main_~x~0) (= (_ +zero 8 24) main_~res~0)) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0))) [2018-11-28 18:04:11,259 INFO L448 ceAbstractionStarter]: For program point L80-2(line 80) no Hoare annotation was computed. [2018-11-28 18:04:11,259 INFO L444 ceAbstractionStarter]: At program point L77(line 77) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0)) (= (_ +zero 8 24) main_~x~0)) [2018-11-28 18:04:11,259 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 68 86) no Hoare annotation was computed. [2018-11-28 18:04:11,259 INFO L448 ceAbstractionStarter]: For program point L77-1(line 77) no Hoare annotation was computed. [2018-11-28 18:04:11,259 INFO L448 ceAbstractionStarter]: For program point L80-4(lines 80 83) no Hoare annotation was computed. [2018-11-28 18:04:11,259 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2018-11-28 18:04:11,260 INFO L448 ceAbstractionStarter]: For program point L23(lines 23 47) no Hoare annotation was computed. [2018-11-28 18:04:11,260 INFO L448 ceAbstractionStarter]: For program point L48(lines 48 52) no Hoare annotation was computed. [2018-11-28 18:04:11,260 INFO L448 ceAbstractionStarter]: For program point L48-1(lines 13 54) no Hoare annotation was computed. [2018-11-28 18:04:11,260 INFO L448 ceAbstractionStarter]: For program point L48-2(lines 48 52) no Hoare annotation was computed. [2018-11-28 18:04:11,260 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-11-28 18:04:11,260 INFO L451 ceAbstractionStarter]: At program point ceil_floatENTRY(lines 13 54) the Hoare annotation is: true [2018-11-28 18:04:11,260 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-28 18:04:11,260 INFO L448 ceAbstractionStarter]: For program point L24(lines 24 41) no Hoare annotation was computed. [2018-11-28 18:04:11,261 INFO L448 ceAbstractionStarter]: For program point ceil_floatFINAL(lines 13 54) no Hoare annotation was computed. [2018-11-28 18:04:11,261 INFO L448 ceAbstractionStarter]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2018-11-28 18:04:11,261 INFO L444 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (or (= |ceil_float_#in~x| ceil_float_~x) (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0))) [2018-11-28 18:04:11,261 INFO L448 ceAbstractionStarter]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2018-11-28 18:04:11,261 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2018-11-28 18:04:11,261 INFO L448 ceAbstractionStarter]: For program point ceil_floatEXIT(lines 13 54) no Hoare annotation was computed. [2018-11-28 18:04:11,261 INFO L448 ceAbstractionStarter]: For program point L37-2(lines 37 38) no Hoare annotation was computed. [2018-11-28 18:04:11,261 INFO L448 ceAbstractionStarter]: For program point L25(lines 25 31) no Hoare annotation was computed. [2018-11-28 18:04:11,262 INFO L448 ceAbstractionStarter]: For program point L34(lines 34 35) no Hoare annotation was computed. [2018-11-28 18:04:11,262 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 30) no Hoare annotation was computed. [2018-11-28 18:04:11,262 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 46) no Hoare annotation was computed. [2018-11-28 18:04:11,262 INFO L448 ceAbstractionStarter]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2018-11-28 18:04:11,262 INFO L444 ceAbstractionStarter]: At program point L59-2(lines 59 63) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1000000000000000000000000000000.0)) ~huge_ceil~0)) (= |__signbit_float_#in~x| __signbit_float_~x)) [2018-11-28 18:04:11,262 INFO L448 ceAbstractionStarter]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2018-11-28 18:04:11,262 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 56 66) no Hoare annotation was computed. [2018-11-28 18:04:11,263 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 56 66) the Hoare annotation is: true [2018-11-28 18:04:11,263 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 56 66) no Hoare annotation was computed. [2018-11-28 18:04:11,272 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,273 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,277 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,277 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,278 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,279 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,279 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,279 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:04:11 BoogieIcfgContainer [2018-11-28 18:04:11,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:04:11,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:04:11,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:04:11,283 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:04:11,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:03:59" (3/4) ... [2018-11-28 18:04:11,289 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 18:04:11,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 18:04:11,298 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 18:04:11,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ceil_float [2018-11-28 18:04:11,299 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-11-28 18:04:11,306 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-11-28 18:04:11,306 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-28 18:04:11,306 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 18:04:11,341 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) [2018-11-28 18:04:11,342 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) || \old(x) == x [2018-11-28 18:04:11,388 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:04:11,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:04:11,393 INFO L168 Benchmark]: Toolchain (without parser) took 12954.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.4 MB). Free memory was 951.3 MB in the beginning and 1.2 GB in the end (delta: -210.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:11,397 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:04:11,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.99 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:11,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.21 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:11,404 INFO L168 Benchmark]: Boogie Preprocessor took 159.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:11,404 INFO L168 Benchmark]: RCFGBuilder took 966.46 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: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:11,405 INFO L168 Benchmark]: TraceAbstraction took 11306.61 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -90.7 MB). Peak memory consumption was 307.3 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:11,406 INFO L168 Benchmark]: Witness Printer took 109.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. [2018-11-28 18:04:11,417 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 357.99 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.21 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 159.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 966.46 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: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11306.61 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -90.7 MB). Peak memory consumption was 307.3 MB. Max. memory is 11.5 GB. * Witness Printer took 109.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 59]: Loop Invariant [2018-11-28 18:04:11,429 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,429 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,429 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,430 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) || \old(x) == x - InvariantResult [Line: 16]: Loop Invariant [2018-11-28 18:04:11,430 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,430 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,439 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2018-11-28 18:04:11,439 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: \old(x) == x || !(~to_fp~LONGDOUBLE(~roundNearestTiesToEven, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 1.0E30)) == huge_ceil) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. SAFE Result, 11.2s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 7.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 244 SDtfs, 279 SDslu, 775 SDs, 0 SdLazy, 444 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 136 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 22 PreInvPairs, 25 NumberOfFragments, 65 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 179 ConstructedInterpolants, 26 QuantifiedInterpolants, 26926 SizeOfPredicates, 32 NumberOfNonLiveVariables, 504 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...