java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Addition02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 06:12:29,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 06:12:29,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 06:12:29,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 06:12:29,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 06:12:29,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 06:12:30,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 06:12:30,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 06:12:30,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 06:12:30,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 06:12:30,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 06:12:30,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 06:12:30,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 06:12:30,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 06:12:30,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 06:12:30,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 06:12:30,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 06:12:30,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 06:12:30,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 06:12:30,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 06:12:30,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 06:12:30,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 06:12:30,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 06:12:30,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 06:12:30,025 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 06:12:30,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 06:12:30,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 06:12:30,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 06:12:30,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 06:12:30,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 06:12:30,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 06:12:30,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 06:12:30,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 06:12:30,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 06:12:30,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 06:12:30,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 06:12:30,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 06:12:30,048 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 06:12:30,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 06:12:30,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 06:12:30,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 06:12:30,050 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 06:12:30,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 06:12:30,051 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 06:12:30,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 06:12:30,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 06:12:30,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 06:12:30,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 06:12:30,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 06:12:30,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 06:12:30,052 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 06:12:30,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 06:12:30,053 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 06:12:30,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 06:12:30,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 06:12:30,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 06:12:30,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 06:12:30,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 06:12:30,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:12:30,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 06:12:30,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 06:12:30,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 06:12:30,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 06:12:30,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 06:12:30,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 06:12:30,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 06:12:30,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 06:12:30,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 06:12:30,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 06:12:30,100 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 06:12:30,101 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 06:12:30,102 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition02.c [2019-09-08 06:12:30,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7093b07fc/ecd6de7c1df945758f52b1b73e2682a1/FLAGd1af6422d [2019-09-08 06:12:30,666 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 06:12:30,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition02.c [2019-09-08 06:12:30,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7093b07fc/ecd6de7c1df945758f52b1b73e2682a1/FLAGd1af6422d [2019-09-08 06:12:30,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7093b07fc/ecd6de7c1df945758f52b1b73e2682a1 [2019-09-08 06:12:31,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 06:12:31,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 06:12:31,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 06:12:31,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 06:12:31,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 06:12:31,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:12:30" (1/1) ... [2019-09-08 06:12:31,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bfb0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31, skipping insertion in model container [2019-09-08 06:12:31,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 06:12:30" (1/1) ... [2019-09-08 06:12:31,019 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 06:12:31,036 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 06:12:31,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:12:31,256 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 06:12:31,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 06:12:31,290 INFO L192 MainTranslator]: Completed translation [2019-09-08 06:12:31,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31 WrapperNode [2019-09-08 06:12:31,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 06:12:31,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 06:12:31,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 06:12:31,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 06:12:31,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31" (1/1) ... [2019-09-08 06:12:31,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31" (1/1) ... [2019-09-08 06:12:31,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31" (1/1) ... [2019-09-08 06:12:31,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31" (1/1) ... [2019-09-08 06:12:31,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31" (1/1) ... [2019-09-08 06:12:31,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31" (1/1) ... [2019-09-08 06:12:31,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31" (1/1) ... [2019-09-08 06:12:31,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 06:12:31,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 06:12:31,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 06:12:31,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 06:12:31,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 06:12:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 06:12:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 06:12:31,482 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2019-09-08 06:12:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 06:12:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 06:12:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 06:12:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2019-09-08 06:12:31,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 06:12:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 06:12:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 06:12:31,679 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 06:12:31,679 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 06:12:31,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:12:31 BoogieIcfgContainer [2019-09-08 06:12:31,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 06:12:31,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 06:12:31,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 06:12:31,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 06:12:31,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 06:12:30" (1/3) ... [2019-09-08 06:12:31,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4bc05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:12:31, skipping insertion in model container [2019-09-08 06:12:31,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 06:12:31" (2/3) ... [2019-09-08 06:12:31,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4bc05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 06:12:31, skipping insertion in model container [2019-09-08 06:12:31,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 06:12:31" (3/3) ... [2019-09-08 06:12:31,706 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition02.c [2019-09-08 06:12:31,722 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 06:12:31,732 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 06:12:31,753 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 06:12:31,814 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 06:12:31,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 06:12:31,815 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 06:12:31,816 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 06:12:31,816 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 06:12:31,818 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 06:12:31,818 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 06:12:31,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 06:12:31,821 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 06:12:31,845 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-09-08 06:12:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-08 06:12:31,852 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:31,853 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:31,856 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2019-09-08 06:12:31,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:31,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:31,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:31,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:31,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:12:32,145 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:12:32,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 06:12:32,150 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 06:12:32,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 06:12:32,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 06:12:32,167 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2019-09-08 06:12:32,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:32,434 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-09-08 06:12:32,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 06:12:32,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-09-08 06:12:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:32,453 INFO L225 Difference]: With dead ends: 38 [2019-09-08 06:12:32,453 INFO L226 Difference]: Without dead ends: 24 [2019-09-08 06:12:32,462 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-09-08 06:12:32,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-08 06:12:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-09-08 06:12:32,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-08 06:12:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-09-08 06:12:32,532 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2019-09-08 06:12:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:32,533 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-09-08 06:12:32,533 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 06:12:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-09-08 06:12:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-08 06:12:32,537 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:32,538 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:32,538 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2019-09-08 06:12:32,541 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:32,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:32,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:32,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:32,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 06:12:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 06:12:32,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 06:12:32,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 06:12:32,618 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 06:12:32,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 06:12:32,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:12:32,620 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2019-09-08 06:12:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 06:12:32,660 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2019-09-08 06:12:32,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-08 06:12:32,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-08 06:12:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 06:12:32,662 INFO L225 Difference]: With dead ends: 34 [2019-09-08 06:12:32,662 INFO L226 Difference]: Without dead ends: 26 [2019-09-08 06:12:32,663 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-08 06:12:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-08 06:12:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-09-08 06:12:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-08 06:12:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-09-08 06:12:32,671 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2019-09-08 06:12:32,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 06:12:32,672 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-09-08 06:12:32,672 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 06:12:32,672 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-09-08 06:12:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 06:12:32,674 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 06:12:32,674 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 06:12:32,674 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 06:12:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 06:12:32,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2019-09-08 06:12:32,675 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 06:12:32,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 06:12:32,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:32,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 06:12:32,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 06:12:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 06:12:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 06:12:32,762 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 06:12:32,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 06:12:32 BoogieIcfgContainer [2019-09-08 06:12:32,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 06:12:32,799 INFO L168 Benchmark]: Toolchain (without parser) took 1795.83 ms. Allocated memory was 141.6 MB in the beginning and 201.3 MB in the end (delta: 59.8 MB). Free memory was 88.6 MB in the beginning and 111.8 MB in the end (delta: -23.2 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:32,800 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 06:12:32,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.61 ms. Allocated memory is still 141.6 MB. Free memory was 88.4 MB in the beginning and 79.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:32,804 INFO L168 Benchmark]: Boogie Preprocessor took 131.68 ms. Allocated memory was 141.6 MB in the beginning and 201.3 MB in the end (delta: 59.8 MB). Free memory was 79.0 MB in the beginning and 179.6 MB in the end (delta: -100.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:32,805 INFO L168 Benchmark]: RCFGBuilder took 257.13 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 167.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:32,807 INFO L168 Benchmark]: TraceAbstraction took 1113.91 ms. Allocated memory is still 201.3 MB. Free memory was 166.8 MB in the beginning and 111.8 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2019-09-08 06:12:32,816 INFO L335 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 141.6 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.61 ms. Allocated memory is still 141.6 MB. Free memory was 88.4 MB in the beginning and 79.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.68 ms. Allocated memory was 141.6 MB in the beginning and 201.3 MB in the end (delta: 59.8 MB). Free memory was 79.0 MB in the beginning and 179.6 MB in the end (delta: -100.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 257.13 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 167.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1113.91 ms. Allocated memory is still 201.3 MB. Free memory was 166.8 MB in the beginning and 111.8 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L27] int m = __VERIFIER_nondet_int(); [L28] COND FALSE !(m < 0 || m > 1073741823) [L33] int n = __VERIFIER_nondet_int(); [L34] COND FALSE !(n < 0 || n > 1073741823) VAL [m=0, n=1] [L39] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L14] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L17] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L18] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L14] COND TRUE n == 0 [L15] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L18] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L18] return addition(m+1, n-1); [L39] RET, EXPR addition(m,n) VAL [addition(m,n)=1, m=0, n=1] [L39] int result = addition(m,n); [L40] COND FALSE !(result == m - n) VAL [m=0, n=1, result=1] [L43] __VERIFIER_error() VAL [m=0, n=1, result=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 27 SDslu, 93 SDs, 0 SdLazy, 95 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...