/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/floats-cbmc-regression/float2_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 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 ../../../trunk/examples/svcomp/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 ../../../trunk/examples/svcomp/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 0.1.23-40ef509 [2018-09-20 13:47:46,856 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:47:46,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:47:46,880 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:47:46,881 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:47:46,883 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:47:46,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:47:46,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:47:46,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:47:46,894 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:47:46,897 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:47:46,897 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:47:46,898 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:47:46,902 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:47:46,910 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:47:46,910 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:47:46,914 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:47:46,920 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:47:46,922 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:47:46,927 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:47:46,929 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:47:46,930 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:47:46,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:47:46,935 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:47:46,936 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:47:46,938 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:47:46,939 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:47:46,939 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:47:46,941 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:47:46,946 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:47:46,947 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:47:46,948 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:47:46,948 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:47:46,949 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:47:46,952 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:47:46,953 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:47:46,953 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 13:47:46,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:47:46,978 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:47:46,979 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:47:46,979 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:47:46,980 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:47:46,980 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:47:46,980 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:47:46,981 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:47:46,981 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:47:46,981 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 13:47:46,981 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:47:46,981 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:47:46,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:47:46,982 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:47:46,982 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:47:46,982 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:47:46,982 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:47:46,982 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:47:46,984 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:47:46,984 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:47:46,984 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:47:46,984 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:47:46,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:47:46,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:47:46,985 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:47:46,985 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:47:46,986 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 13:47:46,987 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:47:46,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 13:47:46,987 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 [2018-09-20 13:47:47,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:47:47,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:47:47,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:47:47,068 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:47:47,070 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:47:47,071 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-09-20 13:47:47,428 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fdc1123/38e3b798d4884c9eacdf9249b8dc82b5/FLAG49d2e858c [2018-09-20 13:47:47,591 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:47:47,592 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-09-20 13:47:47,600 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fdc1123/38e3b798d4884c9eacdf9249b8dc82b5/FLAG49d2e858c [2018-09-20 13:47:47,619 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76fdc1123/38e3b798d4884c9eacdf9249b8dc82b5 [2018-09-20 13:47:47,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:47:47,627 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:47:47,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:47:47,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:47:47,637 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:47:47,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:47" (1/1) ... [2018-09-20 13:47:47,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453d45c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47, skipping insertion in model container [2018-09-20 13:47:47,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:47" (1/1) ... [2018-09-20 13:47:47,654 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:47:47,856 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:47:47,873 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:47:47,878 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:47:47,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47 WrapperNode [2018-09-20 13:47:47,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:47:47,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:47:47,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:47:47,894 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:47:47,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47" (1/1) ... [2018-09-20 13:47:47,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47" (1/1) ... [2018-09-20 13:47:47,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47" (1/1) ... [2018-09-20 13:47:47,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47" (1/1) ... [2018-09-20 13:47:47,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47" (1/1) ... [2018-09-20 13:47:47,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47" (1/1) ... [2018-09-20 13:47:47,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47" (1/1) ... [2018-09-20 13:47:47,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:47:47,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:47:47,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:47:47,930 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:47:47,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47" (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 [2018-09-20 13:47:48,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:47:48,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:47:48,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:47:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:47:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:47:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:47:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:47:48,392 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:47:48,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:48 BoogieIcfgContainer [2018-09-20 13:47:48,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:47:48,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:47:48,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:47:48,412 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:47:48,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:47:47" (1/3) ... [2018-09-20 13:47:48,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe20026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:47:48, skipping insertion in model container [2018-09-20 13:47:48,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:47" (2/3) ... [2018-09-20 13:47:48,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe20026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:47:48, skipping insertion in model container [2018-09-20 13:47:48,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:48" (3/3) ... [2018-09-20 13:47:48,419 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2018-09-20 13:47:48,446 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:47:48,455 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-09-20 13:47:48,510 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:47:48,511 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:47:48,511 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:47:48,511 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:47:48,511 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:47:48,511 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:47:48,512 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:47:48,512 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:47:48,512 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:47:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-20 13:47:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:47:48,538 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:47:48,539 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:47:48,541 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:47:48,547 INFO L82 PathProgramCache]: Analyzing trace with hash -484171444, now seen corresponding path program 1 times [2018-09-20 13:47:48,549 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 13:47:48,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 13:47:48,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:47:48,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:47:48,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:47:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:47:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:47:48,650 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:47:48,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:47:48 BoogieIcfgContainer [2018-09-20 13:47:48,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:47:48,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:47:48,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:47:48,675 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:47:48,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:48" (3/4) ... [2018-09-20 13:47:48,679 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 13:47:48,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:47:48,680 INFO L168 Benchmark]: Toolchain (without parser) took 1055.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -166.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:47:48,682 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:47:48,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.59 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:47:48,684 INFO L168 Benchmark]: Boogie Preprocessor took 36.13 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:47:48,684 INFO L168 Benchmark]: RCFGBuilder took 463.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-09-20 13:47:48,686 INFO L168 Benchmark]: TraceAbstraction took 270.42 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2018-09-20 13:47:48,687 INFO L168 Benchmark]: Witness Printer took 4.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:47:48,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.59 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.13 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 463.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -195.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 270.42 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: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.62 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 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 0.1.23-40ef509 [2018-09-20 13:47:51,064 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:47:51,066 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:47:51,079 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:47:51,079 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:47:51,080 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:47:51,082 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:47:51,084 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:47:51,086 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:47:51,087 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:47:51,088 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:47:51,088 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:47:51,089 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:47:51,090 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:47:51,092 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:47:51,093 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:47:51,094 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:47:51,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:47:51,098 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:47:51,100 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:47:51,101 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:47:51,103 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:47:51,105 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:47:51,106 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:47:51,106 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:47:51,107 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:47:51,109 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:47:51,110 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:47:51,111 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:47:51,112 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:47:51,112 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:47:51,113 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:47:51,114 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:47:51,114 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:47:51,116 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:47:51,117 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:47:51,117 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 13:47:51,139 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:47:51,142 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:47:51,143 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:47:51,143 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:47:51,143 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:47:51,144 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:47:51,144 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:47:51,144 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:47:51,144 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:47:51,144 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:47:51,146 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:47:51,147 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:47:51,147 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:47:51,147 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:47:51,147 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 13:47:51,148 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 13:47:51,148 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:47:51,149 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:47:51,149 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:47:51,149 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:47:51,149 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:47:51,149 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:47:51,150 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:47:51,150 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:47:51,150 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:47:51,150 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:47:51,153 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:47:51,153 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 13:47:51,153 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:47:51,153 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 13:47:51,154 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 13:47:51,154 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 [2018-09-20 13:47:51,235 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:47:51,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:47:51,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:47:51,256 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:47:51,256 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:47:51,257 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-09-20 13:47:51,618 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e4a35ce/e702e0329b014826bb0b02b48e303fd4/FLAGe0bd22073 [2018-09-20 13:47:51,803 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:47:51,804 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2_true-unreach-call_true-termination.i [2018-09-20 13:47:51,809 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e4a35ce/e702e0329b014826bb0b02b48e303fd4/FLAGe0bd22073 [2018-09-20 13:47:51,825 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e4a35ce/e702e0329b014826bb0b02b48e303fd4 [2018-09-20 13:47:51,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:47:51,833 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:47:51,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:47:51,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:47:51,841 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:47:51,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:51" (1/1) ... [2018-09-20 13:47:51,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78bc8419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:51, skipping insertion in model container [2018-09-20 13:47:51,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:47:51" (1/1) ... [2018-09-20 13:47:51,857 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:47:52,052 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:47:52,075 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:47:52,080 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:47:52,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52 WrapperNode [2018-09-20 13:47:52,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:47:52,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:47:52,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:47:52,098 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:47:52,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52" (1/1) ... [2018-09-20 13:47:52,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52" (1/1) ... [2018-09-20 13:47:52,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52" (1/1) ... [2018-09-20 13:47:52,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52" (1/1) ... [2018-09-20 13:47:52,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52" (1/1) ... [2018-09-20 13:47:52,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52" (1/1) ... [2018-09-20 13:47:52,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52" (1/1) ... [2018-09-20 13:47:52,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:47:52,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:47:52,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:47:52,134 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:47:52,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:47:52,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:47:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:47:52,211 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:47:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:47:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:47:52,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:47:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:47:52,790 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:47:52,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:52 BoogieIcfgContainer [2018-09-20 13:47:52,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:47:52,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:47:52,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:47:52,796 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:47:52,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:47:51" (1/3) ... [2018-09-20 13:47:52,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308ffc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:47:52, skipping insertion in model container [2018-09-20 13:47:52,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:47:52" (2/3) ... [2018-09-20 13:47:52,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308ffc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:47:52, skipping insertion in model container [2018-09-20 13:47:52,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:52" (3/3) ... [2018-09-20 13:47:52,801 INFO L112 eAbstractionObserver]: Analyzing ICFG float2_true-unreach-call_true-termination.i [2018-09-20 13:47:52,812 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:47:52,821 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-09-20 13:47:52,869 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:47:52,870 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:47:52,870 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:47:52,870 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:47:52,871 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:47:52,871 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:47:52,871 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:47:52,871 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:47:52,871 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:47:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-20 13:47:52,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-20 13:47:52,898 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:47:52,899 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:47:52,902 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:47:52,908 INFO L82 PathProgramCache]: Analyzing trace with hash -484171444, now seen corresponding path program 1 times [2018-09-20 13:47:52,914 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:47:52,915 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 [2018-09-20 13:47:52,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:47:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 13:47:52,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 13:47:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 13:47:53,093 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 13:47:53,118 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 13:47:53,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-20 13:47:53,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-20 13:47:53,141 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-20 13:47:53,142 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 13:47:53,154 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-09-20 13:47:53,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 13:47:53,281 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-09-20 13:47:53,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-20 13:47:53,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-09-20 13:47:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 13:47:53,300 INFO L225 Difference]: With dead ends: 40 [2018-09-20 13:47:53,301 INFO L226 Difference]: Without dead ends: 18 [2018-09-20 13:47:53,305 INFO L606 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 [2018-09-20 13:47:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-20 13:47:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-20 13:47:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-20 13:47:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-09-20 13:47:53,341 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 7 [2018-09-20 13:47:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 13:47:53,342 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-09-20 13:47:53,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-20 13:47:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-09-20 13:47:53,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-20 13:47:53,343 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:47:53,343 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:47:53,344 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:47:53,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1432165234, now seen corresponding path program 1 times [2018-09-20 13:47:53,344 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:47:53,344 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 [2018-09-20 13:47:53,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:47:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 13:47:53,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 13:47:53,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 13:47:53,427 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 13:47:53,441 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 13:47:53,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-20 13:47:53,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-20 13:47:53,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-20 13:47:53,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 13:47:53,444 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 3 states. [2018-09-20 13:47:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 13:47:53,475 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-09-20 13:47:53,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-20 13:47:53,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-09-20 13:47:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 13:47:53,478 INFO L225 Difference]: With dead ends: 18 [2018-09-20 13:47:53,478 INFO L226 Difference]: Without dead ends: 16 [2018-09-20 13:47:53,479 INFO L606 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 [2018-09-20 13:47:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-20 13:47:53,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-20 13:47:53,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-20 13:47:53,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2018-09-20 13:47:53,484 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 9 [2018-09-20 13:47:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 13:47:53,484 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2018-09-20 13:47:53,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-20 13:47:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2018-09-20 13:47:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-20 13:47:53,485 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:47:53,485 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:47:53,487 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:47:53,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1921130384, now seen corresponding path program 1 times [2018-09-20 13:47:53,487 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:47:53,487 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 [2018-09-20 13:47:53,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:47:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 13:47:53,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 13:47:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 13:47:53,556 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 13:47:53,569 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 13:47:53,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-20 13:47:53,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-20 13:47:53,570 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-20 13:47:53,571 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 13:47:53,571 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 3 states. [2018-09-20 13:47:53,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 13:47:53,771 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2018-09-20 13:47:53,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-20 13:47:53,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-20 13:47:53,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 13:47:53,773 INFO L225 Difference]: With dead ends: 16 [2018-09-20 13:47:53,773 INFO L226 Difference]: Without dead ends: 14 [2018-09-20 13:47:53,774 INFO L606 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 [2018-09-20 13:47:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-20 13:47:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-20 13:47:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-20 13:47:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-09-20 13:47:53,777 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-09-20 13:47:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 13:47:53,777 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-09-20 13:47:53,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-20 13:47:53,778 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-09-20 13:47:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-20 13:47:53,778 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:47:53,778 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:47:53,779 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:47:53,779 INFO L82 PathProgramCache]: Analyzing trace with hash 629763314, now seen corresponding path program 1 times [2018-09-20 13:47:53,779 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:47:53,780 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 [2018-09-20 13:47:53,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:47:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-20 13:47:53,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-20 13:47:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-20 13:47:53,816 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-20 13:47:53,826 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-20 13:47:53,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-20 13:47:53,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-20 13:47:53,826 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-20 13:47:53,827 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-20 13:47:53,827 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 3 states. [2018-09-20 13:47:53,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-20 13:47:53,893 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2018-09-20 13:47:53,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-20 13:47:53,894 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-09-20 13:47:53,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-20 13:47:53,894 INFO L225 Difference]: With dead ends: 14 [2018-09-20 13:47:53,894 INFO L226 Difference]: Without dead ends: 0 [2018-09-20 13:47:53,895 INFO L606 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 [2018-09-20 13:47:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-20 13:47:53,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-20 13:47:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-20 13:47:53,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-20 13:47:53,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-09-20 13:47:53,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-20 13:47:53,896 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-20 13:47:53,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-20 13:47:53,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-20 13:47:53,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-20 13:47:53,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-20 13:47:53,979 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-20 13:47:53,980 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-20 13:47:53,980 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-20 13:47:53,980 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-20 13:47:53,980 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-20 13:47:53,980 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-20 13:47:53,980 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 3 22) no Hoare annotation was computed. [2018-09-20 13:47:53,980 INFO L426 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-09-20 13:47:53,980 INFO L426 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-09-20 13:47:53,981 INFO L426 ceAbstractionStarter]: For program point L21-3(lines 3 22) no Hoare annotation was computed. [2018-09-20 13:47:53,981 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-09-20 13:47:53,981 INFO L426 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-09-20 13:47:53,981 INFO L426 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-09-20 13:47:53,981 INFO L426 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2018-09-20 13:47:53,981 INFO L426 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-09-20 13:47:53,981 INFO L426 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-09-20 13:47:53,982 INFO L426 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-09-20 13:47:53,982 INFO L426 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2018-09-20 13:47:53,982 INFO L426 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2018-09-20 13:47:53,982 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 3 22) the Hoare annotation is: true [2018-09-20 13:47:53,983 INFO L426 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2018-09-20 13:47:53,983 INFO L426 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-09-20 13:47:53,983 INFO L426 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-09-20 13:47:53,983 INFO L426 ceAbstractionStarter]: For program point L10-3(line 10) no Hoare annotation was computed. [2018-09-20 13:47:53,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:47:53 BoogieIcfgContainer [2018-09-20 13:47:53,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:47:53,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:47:53,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:47:53,987 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:47:53,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:47:52" (3/4) ... [2018-09-20 13:47:53,991 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-20 13:47:53,997 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-20 13:47:53,998 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-20 13:47:54,002 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-09-20 13:47:54,002 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-09-20 13:47:54,002 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-20 13:47:54,044 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 13:47:54,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:47:54,045 INFO L168 Benchmark]: Toolchain (without parser) took 2215.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -123.8 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2018-09-20 13:47:54,047 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:47:54,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.62 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:47:54,048 INFO L168 Benchmark]: Boogie Preprocessor took 35.57 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:47:54,049 INFO L168 Benchmark]: RCFGBuilder took 656.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-20 13:47:54,050 INFO L168 Benchmark]: TraceAbstraction took 1193.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 11.5 GB. [2018-09-20 13:47:54,050 INFO L168 Benchmark]: Witness Printer took 57.71 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-09-20 13:47:54,054 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.62 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.57 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 656.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1193.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 11.5 GB. * Witness Printer took 57.71 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: 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 - PositiveResult [Line: 17]: 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, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 14 SDslu, 27 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s 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...