./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/float-newlib/float_req_bl_1071_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0ed9222f 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_1071_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 cbf38875841624eee0d839935b3b6d34a59b0b20 ......................................................................................................................................................................................................................................................................... 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_1071_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 cbf38875841624eee0d839935b3b6d34a59b0b20 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-0ed9222-m [2019-01-12 09:15:57,089 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 09:15:57,090 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 09:15:57,102 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 09:15:57,102 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 09:15:57,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 09:15:57,105 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 09:15:57,106 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 09:15:57,108 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 09:15:57,109 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 09:15:57,110 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 09:15:57,110 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 09:15:57,111 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 09:15:57,112 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 09:15:57,113 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 09:15:57,114 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 09:15:57,115 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 09:15:57,116 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 09:15:57,119 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 09:15:57,120 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 09:15:57,121 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 09:15:57,122 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 09:15:57,125 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 09:15:57,125 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:15:57,126 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:15:57,127 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:15:57,128 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:15:57,128 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:15:57,129 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:15:57,130 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:15:57,130 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:15:57,131 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:15:57,131 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:15:57,132 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:15:57,133 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:15:57,133 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:15:57,134 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-01-12 09:15:57,150 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:15:57,151 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:15:57,152 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:15:57,152 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:15:57,152 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:15:57,155 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:15:57,155 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:15:57,155 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-12 09:15:57,155 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:15:57,156 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:15:57,156 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:15:57,156 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:15:57,156 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:15:57,156 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:15:57,156 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:15:57,157 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:15:57,157 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:15:57,157 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:15:57,157 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:15:57,157 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:15:57,157 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:15:57,158 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:15:57,159 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:15:57,159 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:15:57,159 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:15:57,159 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-12 09:15:57,159 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:15:57,160 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-01-12 09:15:57,160 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 -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-01-12 09:15:57,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:15:57,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:15:57,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:15:57,262 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:15:57,262 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:15:57,264 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1071_true-unreach-call.c [2019-01-12 09:15:57,316 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54fe29206/0e07a3b379994b268a7ca9d68f843349/FLAGe673b867a [2019-01-12 09:15:57,699 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:15:57,700 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1071_true-unreach-call.c [2019-01-12 09:15:57,707 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54fe29206/0e07a3b379994b268a7ca9d68f843349/FLAGe673b867a [2019-01-12 09:15:58,100 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54fe29206/0e07a3b379994b268a7ca9d68f843349 [2019-01-12 09:15:58,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:15:58,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:15:58,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:15:58,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:15:58,110 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:15:58,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a290a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58, skipping insertion in model container [2019-01-12 09:15:58,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:15:58,152 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:15:58,400 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:15:58,408 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:15:58,448 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:15:58,472 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:15:58,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58 WrapperNode [2019-01-12 09:15:58,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:15:58,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:15:58,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:15:58,474 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:15:58,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:15:58,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:15:58,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:15:58,530 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:15:58,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (1/1) ... [2019-01-12 09:15:58,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:15:58,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:15:58,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:15:58,658 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:15:58,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (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 [2019-01-12 09:15:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-01-12 09:15:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-12 09:15:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-01-12 09:15:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:15:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:15:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-12 09:15:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 09:15:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 09:15:59,137 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:15:59,138 INFO L286 CfgBuilder]: Removed 14 assue(true) statements. [2019-01-12 09:15:59,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:15:59 BoogieIcfgContainer [2019-01-12 09:15:59,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:15:59,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:15:59,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:15:59,144 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:15:59,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:15:58" (1/3) ... [2019-01-12 09:15:59,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6064846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:15:59, skipping insertion in model container [2019-01-12 09:15:59,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:15:58" (2/3) ... [2019-01-12 09:15:59,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6064846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:15:59, skipping insertion in model container [2019-01-12 09:15:59,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:15:59" (3/3) ... [2019-01-12 09:15:59,148 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071_true-unreach-call.c [2019-01-12 09:15:59,159 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:15:59,168 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:15:59,187 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:15:59,222 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:15:59,223 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:15:59,223 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:15:59,223 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:15:59,223 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:15:59,224 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:15:59,224 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:15:59,224 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:15:59,224 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:15:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-01-12 09:15:59,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 09:15:59,248 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:15:59,249 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:15:59,252 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:15:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:15:59,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2019-01-12 09:15:59,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:15:59,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:15:59,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:15:59,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:15:59,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:15:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:15:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:15:59,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:15:59,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:15:59,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:15:59,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:15:59,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:15:59,411 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-01-12 09:15:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:15:59,431 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2019-01-12 09:15:59,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:15:59,433 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-12 09:15:59,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:15:59,445 INFO L225 Difference]: With dead ends: 40 [2019-01-12 09:15:59,445 INFO L226 Difference]: Without dead ends: 18 [2019-01-12 09:15:59,449 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 [2019-01-12 09:15:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-01-12 09:15:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-01-12 09:15:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-01-12 09:15:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-01-12 09:15:59,490 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-01-12 09:15:59,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:15:59,490 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-01-12 09:15:59,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:15:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-01-12 09:15:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-12 09:15:59,491 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:15:59,491 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:15:59,493 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:15:59,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:15:59,493 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2019-01-12 09:15:59,493 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-12 09:15:59,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-12 09:15:59,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:15:59,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:15:59,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-12 09:15:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:15:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-12 09:15:59,612 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-12 09:15:59,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:15:59 BoogieIcfgContainer [2019-01-12 09:15:59,641 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:15:59,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:15:59,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:15:59,641 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:15:59,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:15:59" (3/4) ... [2019-01-12 09:15:59,647 INFO L147 WitnessPrinter]: No result that supports witness generation found [2019-01-12 09:15:59,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:15:59,648 INFO L168 Benchmark]: Toolchain (without parser) took 1543.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -107.7 MB). Peak memory consumption was 805.7 kB. Max. memory is 11.5 GB. [2019-01-12 09:15:59,651 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:15:59,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.62 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:15:59,652 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.58 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-01-12 09:15:59,654 INFO L168 Benchmark]: Boogie Preprocessor took 128.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2019-01-12 09:15:59,655 INFO L168 Benchmark]: RCFGBuilder took 481.47 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2019-01-12 09:15:59,656 INFO L168 Benchmark]: TraceAbstraction took 500.23 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-01-12 09:15:59,657 INFO L168 Benchmark]: Witness Printer took 6.35 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:15:59,663 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 366.62 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 932.6 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 55.58 ms. Allocated memory is still 1.0 GB. Free memory was 932.6 MB in the beginning and 927.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 128.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -169.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 481.47 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 500.23 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Witness Printer took 6.35 ms. Allocated memory is still 1.1 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: 57]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 38, overapproximation of bitwiseAnd at line 19. Possible FailurePath: [L52] float x = 0.0f / 0.0f; [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND TRUE exponent_less_127 == 255 [L38] return x + x; [L53] float res = trunc_float(x); [L44] return x != x; [L56] COND TRUE !isnan_float(res) [L57] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 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=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 0.1.24-0ed9222-m [2019-01-12 09:16:01,987 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-12 09:16:01,989 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-12 09:16:02,003 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-12 09:16:02,003 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-12 09:16:02,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-12 09:16:02,006 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-12 09:16:02,008 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-12 09:16:02,010 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-12 09:16:02,010 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-12 09:16:02,011 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-12 09:16:02,012 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-12 09:16:02,013 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-12 09:16:02,013 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-12 09:16:02,015 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-12 09:16:02,015 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-12 09:16:02,016 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-12 09:16:02,018 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-12 09:16:02,020 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-12 09:16:02,021 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-12 09:16:02,023 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-12 09:16:02,024 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-12 09:16:02,026 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-12 09:16:02,026 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-12 09:16:02,027 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-12 09:16:02,027 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-12 09:16:02,028 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-12 09:16:02,029 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-12 09:16:02,030 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-12 09:16:02,031 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-12 09:16:02,031 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-12 09:16:02,032 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-12 09:16:02,032 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-12 09:16:02,032 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-12 09:16:02,034 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-12 09:16:02,034 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-12 09:16:02,035 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-01-12 09:16:02,051 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-12 09:16:02,051 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-12 09:16:02,052 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-12 09:16:02,052 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-12 09:16:02,052 INFO L133 SettingsManager]: * Use SBE=true [2019-01-12 09:16:02,053 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-12 09:16:02,053 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-12 09:16:02,053 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-12 09:16:02,053 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-12 09:16:02,053 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-12 09:16:02,054 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-12 09:16:02,054 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-12 09:16:02,054 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2019-01-12 09:16:02,054 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-01-12 09:16:02,054 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-12 09:16:02,054 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-12 09:16:02,055 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-12 09:16:02,055 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-12 09:16:02,055 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-12 09:16:02,055 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-12 09:16:02,055 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-12 09:16:02,056 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-12 09:16:02,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-12 09:16:02,056 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-12 09:16:02,056 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-12 09:16:02,056 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-12 09:16:02,057 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2019-01-12 09:16:02,057 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-12 09:16:02,057 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-01-12 09:16:02,057 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2019-01-12 09:16:02,057 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 -> cbf38875841624eee0d839935b3b6d34a59b0b20 [2019-01-12 09:16:02,102 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-12 09:16:02,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-12 09:16:02,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-12 09:16:02,129 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-12 09:16:02,130 INFO L276 PluginConnector]: CDTParser initialized [2019-01-12 09:16:02,131 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/float-newlib/float_req_bl_1071_true-unreach-call.c [2019-01-12 09:16:02,194 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/952f8643a/79ea8052db3e4bd0be12f6cae681320d/FLAG27ee63d36 [2019-01-12 09:16:02,652 INFO L307 CDTParser]: Found 1 translation units. [2019-01-12 09:16:02,652 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/float-newlib/float_req_bl_1071_true-unreach-call.c [2019-01-12 09:16:02,659 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/952f8643a/79ea8052db3e4bd0be12f6cae681320d/FLAG27ee63d36 [2019-01-12 09:16:03,026 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/952f8643a/79ea8052db3e4bd0be12f6cae681320d [2019-01-12 09:16:03,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-12 09:16:03,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-12 09:16:03,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-12 09:16:03,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-12 09:16:03,036 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-12 09:16:03,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5636bad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03, skipping insertion in model container [2019-01-12 09:16:03,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-12 09:16:03,071 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-12 09:16:03,342 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:16:03,354 INFO L191 MainTranslator]: Completed pre-run [2019-01-12 09:16:03,383 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-12 09:16:03,416 INFO L195 MainTranslator]: Completed translation [2019-01-12 09:16:03,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03 WrapperNode [2019-01-12 09:16:03,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-12 09:16:03,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-12 09:16:03,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-12 09:16:03,418 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-12 09:16:03,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-12 09:16:03,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-12 09:16:03,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-12 09:16:03,465 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-12 09:16:03,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (1/1) ... [2019-01-12 09:16:03,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-12 09:16:03,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-12 09:16:03,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-12 09:16:03,571 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-12 09:16:03,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (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 [2019-01-12 09:16:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-01-12 09:16:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2019-01-12 09:16:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-01-12 09:16:03,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-12 09:16:03,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-12 09:16:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-01-12 09:16:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-01-12 09:16:03,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-12 09:16:03,840 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-01-12 09:16:04,088 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-12 09:16:04,088 INFO L286 CfgBuilder]: Removed 14 assue(true) statements. [2019-01-12 09:16:04,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:16:04 BoogieIcfgContainer [2019-01-12 09:16:04,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-12 09:16:04,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-12 09:16:04,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-12 09:16:04,095 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-12 09:16:04,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.01 09:16:03" (1/3) ... [2019-01-12 09:16:04,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3b33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:16:04, skipping insertion in model container [2019-01-12 09:16:04,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.01 09:16:03" (2/3) ... [2019-01-12 09:16:04,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f3b33b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.01 09:16:04, skipping insertion in model container [2019-01-12 09:16:04,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:16:04" (3/3) ... [2019-01-12 09:16:04,099 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071_true-unreach-call.c [2019-01-12 09:16:04,110 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-12 09:16:04,119 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-01-12 09:16:04,137 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-01-12 09:16:04,173 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-12 09:16:04,174 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-12 09:16:04,174 INFO L383 AbstractCegarLoop]: Hoare is true [2019-01-12 09:16:04,174 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-12 09:16:04,174 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-12 09:16:04,174 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-12 09:16:04,175 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-12 09:16:04,175 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-12 09:16:04,175 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-12 09:16:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-01-12 09:16:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-01-12 09:16:04,196 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:16:04,197 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:16:04,199 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:16:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:16:04,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2019-01-12 09:16:04,209 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:16:04,210 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 [2019-01-12 09:16:04,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:16:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:16:04,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:16:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:16:04,305 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:16:04,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:16:04,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-12 09:16:04,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-01-12 09:16:04,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-01-12 09:16:04,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:16:04,338 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-01-12 09:16:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:16:04,354 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2019-01-12 09:16:04,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-01-12 09:16:04,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-01-12 09:16:04,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:16:04,365 INFO L225 Difference]: With dead ends: 40 [2019-01-12 09:16:04,365 INFO L226 Difference]: Without dead ends: 18 [2019-01-12 09:16:04,368 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-01-12 09:16:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-01-12 09:16:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-01-12 09:16:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-01-12 09:16:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-01-12 09:16:04,406 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2019-01-12 09:16:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:16:04,407 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-01-12 09:16:04,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-01-12 09:16:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-01-12 09:16:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-01-12 09:16:04,408 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:16:04,408 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:16:04,408 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:16:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:16:04,409 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2019-01-12 09:16:04,411 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:16:04,411 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) [2019-01-12 09:16:04,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-01-12 09:16:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:16:04,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:16:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:16:04,585 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:16:04,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:16:04,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-01-12 09:16:04,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-01-12 09:16:04,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-01-12 09:16:04,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:16:04,603 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2019-01-12 09:16:04,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:16:04,736 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-01-12 09:16:04,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-01-12 09:16:04,738 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-01-12 09:16:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:16:04,739 INFO L225 Difference]: With dead ends: 29 [2019-01-12 09:16:04,739 INFO L226 Difference]: Without dead ends: 24 [2019-01-12 09:16:04,741 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-01-12 09:16:04,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-01-12 09:16:04,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2019-01-12 09:16:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-01-12 09:16:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-01-12 09:16:04,747 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2019-01-12 09:16:04,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:16:04,748 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-01-12 09:16:04,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-01-12 09:16:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-01-12 09:16:04,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-01-12 09:16:04,749 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:16:04,749 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:16:04,750 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:16:04,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:16:04,750 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2019-01-12 09:16:04,750 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:16:04,751 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) [2019-01-12 09:16:04,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-01-12 09:16:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:16:04,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:16:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:16:05,084 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:16:05,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:16:05,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-01-12 09:16:05,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-01-12 09:16:05,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-01-12 09:16:05,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-01-12 09:16:05,096 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-01-12 09:16:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:16:05,308 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-01-12 09:16:05,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-01-12 09:16:05,309 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-01-12 09:16:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:16:05,310 INFO L225 Difference]: With dead ends: 24 [2019-01-12 09:16:05,310 INFO L226 Difference]: Without dead ends: 17 [2019-01-12 09:16:05,311 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-01-12 09:16:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-01-12 09:16:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-01-12 09:16:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-01-12 09:16:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-01-12 09:16:05,316 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2019-01-12 09:16:05,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:16:05,317 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-01-12 09:16:05,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-01-12 09:16:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-01-12 09:16:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-01-12 09:16:05,317 INFO L394 BasicCegarLoop]: Found error trace [2019-01-12 09:16:05,318 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-12 09:16:05,318 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-01-12 09:16:05,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-12 09:16:05,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2019-01-12 09:16:05,319 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2019-01-12 09:16:05,319 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 [2019-01-12 09:16:05,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-12 09:16:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-12 09:16:05,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2019-01-12 09:16:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-12 09:16:05,627 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2019-01-12 09:16:05,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-12 09:16:05,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-01-12 09:16:05,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-01-12 09:16:05,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-01-12 09:16:05,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-01-12 09:16:05,644 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-01-12 09:16:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-12 09:16:05,897 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-01-12 09:16:05,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-01-12 09:16:05,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-01-12 09:16:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-01-12 09:16:05,898 INFO L225 Difference]: With dead ends: 17 [2019-01-12 09:16:05,898 INFO L226 Difference]: Without dead ends: 0 [2019-01-12 09:16:05,899 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-01-12 09:16:05,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-01-12 09:16:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-01-12 09:16:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-01-12 09:16:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-01-12 09:16:05,900 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-01-12 09:16:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-01-12 09:16:05,900 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-01-12 09:16:05,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-01-12 09:16:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-01-12 09:16:05,901 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-01-12 09:16:05,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-01-12 09:16:06,105 INFO L448 ceAbstractionStarter]: For program point L56(lines 56 59) no Hoare annotation was computed. [2019-01-12 09:16:06,105 INFO L444 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (= (bvadd |ULTIMATE.start_isnan_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (= |ULTIMATE.start_trunc_float_#res| .cse0) (= ULTIMATE.start_trunc_float_~x .cse0))) [2019-01-12 09:16:06,106 INFO L444 ceAbstractionStarter]: At program point L40(lines 12 41) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24)))) (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (= |ULTIMATE.start_trunc_float_#res| .cse0) (= ULTIMATE.start_trunc_float_~x .cse0))) [2019-01-12 09:16:06,106 INFO L448 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-01-12 09:16:06,106 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-01-12 09:16:06,107 INFO L451 ceAbstractionStarter]: At program point L61(lines 46 62) the Hoare annotation is: true [2019-01-12 09:16:06,107 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-01-12 09:16:06,107 INFO L448 ceAbstractionStarter]: For program point L57(line 57) no Hoare annotation was computed. [2019-01-12 09:16:06,107 INFO L448 ceAbstractionStarter]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2019-01-12 09:16:06,107 INFO L444 ceAbstractionStarter]: At program point L24-2(lines 24 28) the Hoare annotation is: false [2019-01-12 09:16:06,107 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 38) no Hoare annotation was computed. [2019-01-12 09:16:06,107 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2019-01-12 09:16:06,108 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-01-12 09:16:06,108 INFO L448 ceAbstractionStarter]: For program point L21(lines 21 39) no Hoare annotation was computed. [2019-01-12 09:16:06,108 INFO L448 ceAbstractionStarter]: For program point L21-1(lines 21 39) no Hoare annotation was computed. [2019-01-12 09:16:06,108 INFO L448 ceAbstractionStarter]: For program point L30-1(lines 30 34) no Hoare annotation was computed. [2019-01-12 09:16:06,108 INFO L444 ceAbstractionStarter]: At program point L30-2(lines 30 34) the Hoare annotation is: false [2019-01-12 09:16:06,108 INFO L448 ceAbstractionStarter]: For program point L22(lines 22 35) no Hoare annotation was computed. [2019-01-12 09:16:06,108 INFO L448 ceAbstractionStarter]: For program point L14-1(lines 14 18) no Hoare annotation was computed. [2019-01-12 09:16:06,109 INFO L444 ceAbstractionStarter]: At program point L14-2(lines 14 18) the Hoare annotation is: (= ULTIMATE.start_trunc_float_~x (fp.div roundNearestTiesToEven (_ +zero 8 24) (_ +zero 8 24))) [2019-01-12 09:16:06,109 INFO L448 ceAbstractionStarter]: For program point L14-3(lines 14 18) no Hoare annotation was computed. [2019-01-12 09:16:06,117 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-01-12 09:16:06,121 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,122 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,126 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-01-12 09:16:06,126 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,126 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,127 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,128 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,128 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-01-12 09:16:06,128 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,129 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,130 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-01-12 09:16:06,131 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,132 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.01 09:16:06 BoogieIcfgContainer [2019-01-12 09:16:06,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-12 09:16:06,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-12 09:16:06,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-12 09:16:06,136 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-12 09:16:06,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.01 09:16:04" (3/4) ... [2019-01-12 09:16:06,141 INFO L144 WitnessPrinter]: Generating witness for correct program [2019-01-12 09:16:06,153 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-01-12 09:16:06,153 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-01-12 09:16:06,154 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-01-12 09:16:06,181 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) [2019-01-12 09:16:06,182 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~bvadd64(\result, 4294967295bv32) == 0bv32 && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) [2019-01-12 09:16:06,211 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-12 09:16:06,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-12 09:16:06,213 INFO L168 Benchmark]: Toolchain (without parser) took 3183.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 951.3 MB in the beginning and 1.0 GB in the end (delta: -76.1 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. [2019-01-12 09:16:06,215 INFO L168 Benchmark]: CDTParser took 0.85 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. [2019-01-12 09:16:06,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.59 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. [2019-01-12 09:16:06,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.12 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. [2019-01-12 09:16:06,217 INFO L168 Benchmark]: Boogie Preprocessor took 105.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -207.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2019-01-12 09:16:06,218 INFO L168 Benchmark]: RCFGBuilder took 520.17 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-01-12 09:16:06,219 INFO L168 Benchmark]: TraceAbstraction took 2042.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 11.5 GB. [2019-01-12 09:16:06,220 INFO L168 Benchmark]: Witness Printer took 76.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-12 09:16:06,225 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 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 385.59 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 47.12 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 105.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -207.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 520.17 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2042.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 88.7 MB). Peak memory consumption was 88.7 MB. Max. memory is 11.5 GB. * Witness Printer took 76.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - 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: 57]: 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: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant [2019-01-12 09:16:06,245 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-01-12 09:16:06,245 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,245 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,246 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-01-12 09:16:06,246 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,246 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((~bvadd64(\result, 4294967295bv32) == 0bv32 && (\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127)) && \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 14]: Loop Invariant [2019-01-12 09:16:06,247 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,248 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant [2019-01-12 09:16:06,248 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-01-12 09:16:06,249 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,249 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,249 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2019-01-12 09:16:06,249 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2019-01-12 09:16:06,250 WARN L416 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && \result == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && x == ~fp.div~FLOAT(~roundNearestTiesToEven, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 38 SDslu, 65 SDs, 0 SdLazy, 38 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 60 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 3 QuantifiedInterpolants, 1789 SizeOfPredicates, 15 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...