./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive/Fibonacci04.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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 ../sv-benchmarks/c/recursive/Fibonacci04.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3562c726fb0df5872bc6ae08c11ec0d40862c19 .......................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: null --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-29 01:24:17,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:24:17,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:24:17,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:24:17,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:24:17,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:24:17,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:24:17,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:24:17,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:24:17,737 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:24:17,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:24:17,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:24:17,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:24:17,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:24:17,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:24:17,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:24:17,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:24:17,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:24:17,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:24:17,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:24:17,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:24:17,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:24:17,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:24:17,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:24:17,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:24:17,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:24:17,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:24:17,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:24:17,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:24:17,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:24:17,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:24:17,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:24:17,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:24:17,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:24:17,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:24:17,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:24:17,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:24:17,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:24:17,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:24:17,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:24:17,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:24:17,767 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-07-29 01:24:17,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:24:17,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:24:17,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:24:17,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:24:17,784 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:24:17,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:24:17,784 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 01:24:17,784 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:24:17,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:24:17,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 01:24:17,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:24:17,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-29 01:24:17,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:24:17,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-29 01:24:17,786 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-07-29 01:24:17,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 01:24:17,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-29 01:24:17,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:24:17,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-29 01:24:17,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:24:17,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:24:17,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:24:17,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:24:17,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:24:17,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:24:17,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:24:17,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-29 01:24:17,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:24:17,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:24:17,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-29 01:24:17,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:24:17,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 ! overflow) ) 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 -> d3562c726fb0df5872bc6ae08c11ec0d40862c19 [2020-07-29 01:24:18,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:24:18,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:24:18,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:24:18,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:24:18,183 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:24:18,184 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci04.c [2020-07-29 01:24:18,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f4ad11b/ecbc429950bd445a82c0fe14b4dbd182/FLAGd6394a13a [2020-07-29 01:24:18,649 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:24:18,650 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci04.c [2020-07-29 01:24:18,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f4ad11b/ecbc429950bd445a82c0fe14b4dbd182/FLAGd6394a13a [2020-07-29 01:24:19,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f4ad11b/ecbc429950bd445a82c0fe14b4dbd182 [2020-07-29 01:24:19,028 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:24:19,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-29 01:24:19,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:19,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:24:19,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:24:19,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c6090d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19, skipping insertion in model container [2020-07-29 01:24:19,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:24:19,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:24:19,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:19,236 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:24:19,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:24:19,269 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:24:19,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19 WrapperNode [2020-07-29 01:24:19,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:24:19,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:19,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-29 01:24:19,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-29 01:24:19,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-29 01:24:19,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:24:19,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:24:19,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:24:19,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (1/1) ... [2020-07-29 01:24:19,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:24:19,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:24:19,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:24:19,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:24:19,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (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 [2020-07-29 01:24:19,475 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-07-29 01:24:19,475 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-07-29 01:24:19,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:24:19,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:24:19,727 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:24:19,728 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-29 01:24:19,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:19 BoogieIcfgContainer [2020-07-29 01:24:19,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:24:19,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:24:19,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:24:19,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:24:19,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:24:19" (1/3) ... [2020-07-29 01:24:19,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4e3a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:19, skipping insertion in model container [2020-07-29 01:24:19,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:24:19" (2/3) ... [2020-07-29 01:24:19,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4e3a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:24:19, skipping insertion in model container [2020-07-29 01:24:19,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:24:19" (3/3) ... [2020-07-29 01:24:19,741 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-07-29 01:24:19,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:24:19,774 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-29 01:24:19,792 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-29 01:24:19,819 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:24:19,819 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-29 01:24:19,820 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:24:19,820 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:24:19,820 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:24:19,820 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:24:19,820 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:24:19,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:24:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-29 01:24:19,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-07-29 01:24:19,848 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:19,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-07-29 01:24:19,852 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:19,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1701129783, now seen corresponding path program 1 times [2020-07-29 01:24:19,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:19,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762370962] [2020-07-29 01:24:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:20,093 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#true} havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;assume -2147483648 <= main_#t~nondet2 && main_#t~nondet2 <= 2147483647;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; {34#(<= ULTIMATE.start_main_~x~0 2147483647)} is VALID [2020-07-29 01:24:20,099 INFO L263 TraceCheckUtils]: 1: Hoare triple {34#(<= ULTIMATE.start_main_~x~0 2147483647)} call main_#t~ret3 := fibonacci(main_~x~0); {35#(<= |fibonacci_#in~n| 2147483647)} is VALID [2020-07-29 01:24:20,100 INFO L280 TraceCheckUtils]: 2: Hoare triple {35#(<= |fibonacci_#in~n| 2147483647)} ~n := #in~n; {36#(<= fibonacci_~n 2147483647)} is VALID [2020-07-29 01:24:20,102 INFO L280 TraceCheckUtils]: 3: Hoare triple {36#(<= fibonacci_~n 2147483647)} assume !(~n < 1); {36#(<= fibonacci_~n 2147483647)} is VALID [2020-07-29 01:24:20,104 INFO L280 TraceCheckUtils]: 4: Hoare triple {36#(<= fibonacci_~n 2147483647)} assume !(1 == ~n); {36#(<= fibonacci_~n 2147483647)} is VALID [2020-07-29 01:24:20,106 INFO L280 TraceCheckUtils]: 5: Hoare triple {36#(<= fibonacci_~n 2147483647)} assume !(~n - 1 <= 2147483647); {33#false} is VALID [2020-07-29 01:24:20,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:24:20,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762370962] [2020-07-29 01:24:20,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:24:20,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 01:24:20,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426821120] [2020-07-29 01:24:20,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-07-29 01:24:20,120 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:24:20,124 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-29 01:24:20,139 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:20,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-29 01:24:20,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:24:20,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-29 01:24:20,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-29 01:24:20,151 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-07-29 01:24:20,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:20,400 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-07-29 01:24:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-29 01:24:20,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-07-29 01:24:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:24:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2020-07-29 01:24:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-29 01:24:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2020-07-29 01:24:20,416 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 35 transitions. [2020-07-29 01:24:20,471 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:24:20,482 INFO L225 Difference]: With dead ends: 32 [2020-07-29 01:24:20,482 INFO L226 Difference]: Without dead ends: 21 [2020-07-29 01:24:20,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-29 01:24:20,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-29 01:24:20,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-29 01:24:20,532 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:24:20,533 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 21 states. [2020-07-29 01:24:20,533 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-29 01:24:20,534 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-29 01:24:20,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:20,540 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-07-29 01:24:20,540 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-07-29 01:24:20,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:20,542 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:20,542 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-29 01:24:20,542 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-29 01:24:20,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:24:20,547 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2020-07-29 01:24:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-07-29 01:24:20,548 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:24:20,549 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:24:20,549 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:24:20,550 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:24:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-29 01:24:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-07-29 01:24:20,555 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 6 [2020-07-29 01:24:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:24:20,555 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-07-29 01:24:20,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-29 01:24:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-07-29 01:24:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-29 01:24:20,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:24:20,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:24:20,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:24:20,557 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-07-29 01:24:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:24:20,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1195415763, now seen corresponding path program 1 times [2020-07-29 01:24:20,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:24:20,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222554307] [2020-07-29 01:24:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:24:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:24:20,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:24:20,570 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-29 01:24:20,576 INFO L168 Benchmark]: Toolchain (without parser) took 1545.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 960.2 MB in the beginning and 1.0 GB in the end (delta: -64.6 MB). Peak memory consumption was 58.1 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:20,576 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:20,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.47 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:20,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:24:20,579 INFO L168 Benchmark]: Boogie Preprocessor took 105.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 949.4 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:20,580 INFO L168 Benchmark]: RCFGBuilder took 321.85 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:20,580 INFO L168 Benchmark]: TraceAbstraction took 838.56 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: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 11.5 GB. [2020-07-29 01:24:20,584 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 237.47 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.4 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 33.72 ms. Allocated memory is still 1.0 GB. Free memory is still 949.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 105.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 949.4 MB in the beginning and 1.1 GB in the end (delta: -162.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 321.85 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 838.56 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: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...