./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i -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 0572227f16868054f9308a9d75f98d2abad6a63b .............................................................................................................................................................................................................................. 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/floats-cbmc-regression/float2_true-unreach-call_true-termination.i -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 0572227f16868054f9308a9d75f98d2abad6a63b ........................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 17:39:58,731 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:39:58,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:39:58,746 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:39:58,746 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:39:58,748 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:39:58,749 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:39:58,751 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:39:58,753 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:39:58,754 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:39:58,755 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:39:58,755 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:39:58,756 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:39:58,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:39:58,759 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:39:58,760 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:39:58,761 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:39:58,763 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:39:58,765 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:39:58,767 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:39:58,768 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:39:58,770 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:39:58,772 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:39:58,773 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:39:58,773 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:39:58,774 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:39:58,775 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:39:58,776 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:39:58,777 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:39:58,778 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:39:58,779 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:39:58,779 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:39:58,780 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:39:58,780 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:39:58,781 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:39:58,782 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:39:58,782 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 17:39:58,798 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:39:58,799 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:39:58,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:39:58,800 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:39:58,801 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:39:58,801 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:39:58,801 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:39:58,802 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:39:58,802 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:39:58,802 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 17:39:58,802 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:39:58,802 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:39:58,802 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:39:58,803 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:39:58,803 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:39:58,803 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:39:58,803 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:39:58,803 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:39:58,804 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:39:58,805 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:39:58,805 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:39:58,806 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:39:58,806 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:39:58,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:39:58,806 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:39:58,806 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:39:58,807 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:39:58,808 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 17:39:58,808 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:39:58,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 17:39:58,808 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 -> 0572227f16868054f9308a9d75f98d2abad6a63b [2018-11-28 17:39:58,845 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:39:58,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:39:58,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:39:58,865 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:39:58,865 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:39:58,866 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-11-28 17:39:58,925 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c006236e0/f09833a3fdc14037baa7bf3774644ad5/FLAGaaf8c56af [2018-11-28 17:39:59,362 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:39:59,363 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-11-28 17:39:59,369 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c006236e0/f09833a3fdc14037baa7bf3774644ad5/FLAGaaf8c56af [2018-11-28 17:39:59,746 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c006236e0/f09833a3fdc14037baa7bf3774644ad5 [2018-11-28 17:39:59,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:39:59,752 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:39:59,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:39:59,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:39:59,763 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:39:59,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:39:59" (1/1) ... [2018-11-28 17:39:59,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb7c612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:39:59, skipping insertion in model container [2018-11-28 17:39:59,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:39:59" (1/1) ... [2018-11-28 17:39:59,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:39:59,796 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:40:00,033 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:00,040 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:40:00,060 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:00,076 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:40:00,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00 WrapperNode [2018-11-28 17:40:00,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:00,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:00,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:40:00,078 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:40:00,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... [2018-11-28 17:40:00,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... [2018-11-28 17:40:00,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:00,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:40:00,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:40:00,097 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:40:00,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... [2018-11-28 17:40:00,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... [2018-11-28 17:40:00,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... [2018-11-28 17:40:00,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... [2018-11-28 17:40:00,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... [2018-11-28 17:40:00,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... [2018-11-28 17:40:00,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... [2018-11-28 17:40:00,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:40:00,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:40:00,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:40:00,116 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:40:00,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:40:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:40:00,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:40:00,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:40:00,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:40:00,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:40:00,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:40:00,484 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:40:00,484 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 17:40:00,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:00 BoogieIcfgContainer [2018-11-28 17:40:00,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:40:00,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:40:00,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:40:00,500 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:40:00,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:39:59" (1/3) ... [2018-11-28 17:40:00,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afdfd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:00, skipping insertion in model container [2018-11-28 17:40:00,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:00" (2/3) ... [2018-11-28 17:40:00,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afdfd82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:00, skipping insertion in model container [2018-11-28 17:40:00,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:00" (3/3) ... [2018-11-28 17:40:00,511 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2018-11-28 17:40:00,533 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:40:00,557 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 17:40:00,583 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 17:40:00,611 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:40:00,612 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:40:00,612 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:40:00,612 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:40:00,612 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:40:00,612 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:40:00,613 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:40:00,613 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:40:00,613 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:40:00,632 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-28 17:40:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 17:40:00,639 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:40:00,640 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:40:00,642 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:40:00,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:40:00,649 INFO L82 PathProgramCache]: Analyzing trace with hash -484171444, now seen corresponding path program 1 times [2018-11-28 17:40:00,652 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 17:40:00,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 17:40:00,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:40:00,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:40:00,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 17:40:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 17:40:00,753 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 17:40:00,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:40:00 BoogieIcfgContainer [2018-11-28 17:40:00,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:40:00,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:40:00,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:40:00,777 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:40:00,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:00" (3/4) ... [2018-11-28 17:40:00,783 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 17:40:00,783 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:40:00,785 INFO L168 Benchmark]: Toolchain (without parser) took 1033.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -120.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:00,787 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:00,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.29 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:00,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.35 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:00,790 INFO L168 Benchmark]: Boogie Preprocessor took 18.35 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:00,791 INFO L168 Benchmark]: RCFGBuilder took 371.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -146.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:00,794 INFO L168 Benchmark]: TraceAbstraction took 287.31 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: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:00,795 INFO L168 Benchmark]: Witness Printer took 6.97 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. [2018-11-28 17:40:00,800 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 320.29 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 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 19.35 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.35 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 371.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -146.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 287.31 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: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Witness Printer took 6.97 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: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10. Possible FailurePath: [L5] float a; [L6] double b; [L9] a=1.25L VAL [a=5/4] [L10] COND TRUE !(a==1.25) VAL [a=5/4] [L10] __VERIFIER_error() VAL [a=5/4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 17:40:03,245 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 17:40:03,247 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 17:40:03,261 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 17:40:03,262 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 17:40:03,263 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 17:40:03,264 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 17:40:03,266 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 17:40:03,268 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 17:40:03,269 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 17:40:03,270 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 17:40:03,270 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 17:40:03,272 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 17:40:03,273 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 17:40:03,274 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 17:40:03,275 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 17:40:03,275 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 17:40:03,278 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 17:40:03,280 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 17:40:03,282 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 17:40:03,283 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 17:40:03,285 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 17:40:03,288 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 17:40:03,288 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 17:40:03,289 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 17:40:03,290 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 17:40:03,291 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 17:40:03,292 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 17:40:03,293 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 17:40:03,294 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 17:40:03,294 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 17:40:03,295 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 17:40:03,295 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 17:40:03,297 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 17:40:03,298 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 17:40:03,299 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 17:40:03,300 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 17:40:03,315 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 17:40:03,316 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 17:40:03,317 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 17:40:03,317 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 17:40:03,317 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 17:40:03,318 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 17:40:03,318 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 17:40:03,319 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 17:40:03,319 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 17:40:03,319 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 17:40:03,319 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 17:40:03,319 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 17:40:03,320 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 17:40:03,320 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 17:40:03,320 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 17:40:03,320 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 17:40:03,320 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 17:40:03,320 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 17:40:03,321 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 17:40:03,322 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 17:40:03,322 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 17:40:03,322 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 17:40:03,323 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 17:40:03,323 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 17:40:03,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:40:03,324 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 17:40:03,324 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 17:40:03,324 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 17:40:03,324 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 17:40:03,324 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 17:40:03,324 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 17:40:03,325 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 17:40:03,325 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 -> 0572227f16868054f9308a9d75f98d2abad6a63b [2018-11-28 17:40:03,369 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 17:40:03,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 17:40:03,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 17:40:03,396 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 17:40:03,396 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 17:40:03,397 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-11-28 17:40:03,464 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/699461674/a9688caf280140a4873f735ec28fa8ad/FLAGfa7c6e025 [2018-11-28 17:40:03,936 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 17:40:03,936 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-11-28 17:40:03,945 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/699461674/a9688caf280140a4873f735ec28fa8ad/FLAGfa7c6e025 [2018-11-28 17:40:04,263 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/699461674/a9688caf280140a4873f735ec28fa8ad [2018-11-28 17:40:04,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 17:40:04,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 17:40:04,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:04,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 17:40:04,273 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 17:40:04,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fdf53fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04, skipping insertion in model container [2018-11-28 17:40:04,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 17:40:04,303 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 17:40:04,461 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:04,470 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 17:40:04,489 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 17:40:04,506 INFO L195 MainTranslator]: Completed translation [2018-11-28 17:40:04,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04 WrapperNode [2018-11-28 17:40:04,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 17:40:04,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:04,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 17:40:04,508 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 17:40:04,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 17:40:04,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 17:40:04,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 17:40:04,535 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 17:40:04,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... [2018-11-28 17:40:04,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 17:40:04,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 17:40:04,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 17:40:04,576 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 17:40:04,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 17:40:04,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 17:40:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 17:40:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 17:40:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 17:40:04,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 17:40:04,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 17:40:05,207 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 17:40:05,207 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 17:40:05,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:05 BoogieIcfgContainer [2018-11-28 17:40:05,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 17:40:05,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 17:40:05,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 17:40:05,215 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 17:40:05,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:40:04" (1/3) ... [2018-11-28 17:40:05,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4a2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:05, skipping insertion in model container [2018-11-28 17:40:05,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:40:04" (2/3) ... [2018-11-28 17:40:05,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4a2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:40:05, skipping insertion in model container [2018-11-28 17:40:05,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:05" (3/3) ... [2018-11-28 17:40:05,221 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2018-11-28 17:40:05,247 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 17:40:05,265 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 17:40:05,298 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 17:40:05,347 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 17:40:05,347 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 17:40:05,347 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 17:40:05,348 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 17:40:05,348 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 17:40:05,348 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 17:40:05,348 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 17:40:05,349 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 17:40:05,349 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 17:40:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-28 17:40:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 17:40:05,380 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:40:05,381 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:40:05,383 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:40:05,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:40:05,389 INFO L82 PathProgramCache]: Analyzing trace with hash -484171444, now seen corresponding path program 1 times [2018-11-28 17:40:05,393 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:40:05,393 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 17:40:05,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:40:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:40:05,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:40:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:40:05,514 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:40:05,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:40:05,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 17:40:05,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 17:40:05,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 17:40:05,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 17:40:05,547 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-11-28 17:40:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:40:05,655 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-11-28 17:40:05,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 17:40:05,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-28 17:40:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:40:05,667 INFO L225 Difference]: With dead ends: 40 [2018-11-28 17:40:05,667 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 17:40:05,671 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 17:40:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 17:40:05,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-28 17:40:05,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 17:40:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-11-28 17:40:05,705 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 7 [2018-11-28 17:40:05,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:40:05,706 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-11-28 17:40:05,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 17:40:05,706 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-11-28 17:40:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 17:40:05,706 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:40:05,707 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:40:05,707 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:40:05,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:40:05,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1432165234, now seen corresponding path program 1 times [2018-11-28 17:40:05,708 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:40:05,708 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 17:40:05,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:40:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:40:05,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:40:05,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:40:05,772 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:40:05,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:40:05,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 17:40:05,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 17:40:05,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 17:40:05,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 17:40:05,785 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 3 states. [2018-11-28 17:40:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:40:05,816 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-11-28 17:40:05,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 17:40:05,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 17:40:05,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:40:05,818 INFO L225 Difference]: With dead ends: 18 [2018-11-28 17:40:05,818 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 17:40:05,819 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 17:40:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 17:40:05,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-28 17:40:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 17:40:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2018-11-28 17:40:05,824 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 9 [2018-11-28 17:40:05,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:40:05,825 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2018-11-28 17:40:05,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 17:40:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2018-11-28 17:40:05,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 17:40:05,826 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:40:05,826 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:40:05,827 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:40:05,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:40:05,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1921130384, now seen corresponding path program 1 times [2018-11-28 17:40:05,827 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:40:05,827 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-28 17:40:05,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:40:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:40:05,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:40:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:40:05,882 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:40:05,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:40:05,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 17:40:05,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 17:40:05,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 17:40:05,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 17:40:05,894 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 3 states. [2018-11-28 17:40:06,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:40:06,004 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2018-11-28 17:40:06,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 17:40:06,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-28 17:40:06,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:40:06,006 INFO L225 Difference]: With dead ends: 16 [2018-11-28 17:40:06,006 INFO L226 Difference]: Without dead ends: 14 [2018-11-28 17:40:06,007 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 17:40:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-28 17:40:06,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 17:40:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 17:40:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-11-28 17:40:06,010 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-11-28 17:40:06,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:40:06,010 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-11-28 17:40:06,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 17:40:06,011 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-11-28 17:40:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 17:40:06,011 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 17:40:06,011 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 17:40:06,012 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 17:40:06,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 17:40:06,012 INFO L82 PathProgramCache]: Analyzing trace with hash 629763314, now seen corresponding path program 1 times [2018-11-28 17:40:06,013 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 17:40:06,013 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-28 17:40:06,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 17:40:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 17:40:06,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 17:40:06,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 17:40:06,061 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 17:40:06,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 17:40:06,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 17:40:06,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 17:40:06,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 17:40:06,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 17:40:06,076 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 3 states. [2018-11-28 17:40:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 17:40:06,134 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2018-11-28 17:40:06,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 17:40:06,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-28 17:40:06,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 17:40:06,135 INFO L225 Difference]: With dead ends: 14 [2018-11-28 17:40:06,135 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 17:40:06,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 17:40:06,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 17:40:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 17:40:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 17:40:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 17:40:06,137 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-11-28 17:40:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 17:40:06,138 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 17:40:06,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 17:40:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 17:40:06,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 17:40:06,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 17:40:06,193 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 17:40:06,193 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:40:06,194 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 17:40:06,194 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 17:40:06,194 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 17:40:06,194 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 17:40:06,194 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2018-11-28 17:40:06,195 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2018-11-28 17:40:06,196 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 3 22) no Hoare annotation was computed. [2018-11-28 17:40:06,196 INFO L448 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-28 17:40:06,196 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-11-28 17:40:06,196 INFO L448 ceAbstractionStarter]: For program point L21-3(lines 3 22) no Hoare annotation was computed. [2018-11-28 17:40:06,196 INFO L448 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-28 17:40:06,197 INFO L448 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-11-28 17:40:06,198 INFO L448 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2018-11-28 17:40:06,198 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-28 17:40:06,198 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-28 17:40:06,198 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-11-28 17:40:06,198 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-11-28 17:40:06,198 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 3 22) the Hoare annotation is: true [2018-11-28 17:40:06,199 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2018-11-28 17:40:06,199 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-28 17:40:06,199 INFO L448 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-11-28 17:40:06,199 INFO L448 ceAbstractionStarter]: For program point L10-3(line 10) no Hoare annotation was computed. [2018-11-28 17:40:06,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:40:06 BoogieIcfgContainer [2018-11-28 17:40:06,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 17:40:06,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 17:40:06,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 17:40:06,206 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 17:40:06,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:40:05" (3/4) ... [2018-11-28 17:40:06,212 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 17:40:06,220 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 17:40:06,221 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 17:40:06,226 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 17:40:06,227 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 17:40:06,227 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 17:40:06,273 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 17:40:06,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 17:40:06,274 INFO L168 Benchmark]: Toolchain (without parser) took 2006.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 954.0 MB in the beginning and 1.0 GB in the end (delta: -95.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:06,277 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:06,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.43 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:06,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.83 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:06,278 INFO L168 Benchmark]: Boogie Preprocessor took 33.67 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 17:40:06,280 INFO L168 Benchmark]: RCFGBuilder took 632.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:06,281 INFO L168 Benchmark]: TraceAbstraction took 995.34 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: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:06,281 INFO L168 Benchmark]: Witness Printer took 68.23 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 17:40:06,287 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 237.43 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 943.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.83 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.67 ms. Allocated memory is still 1.0 GB. Free memory is still 943.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 632.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 995.34 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: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 11.5 GB. * Witness Printer took 68.23 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 error locations. SAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 14 SDslu, 27 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 544 SizeOfPredicates, 4 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 8 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...