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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-examples/standard_sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:09,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:09,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:09,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:30:09,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:09,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:09,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:09,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:09,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:09,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:09,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:09,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:09,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:09,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:09,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:09,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:09,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:09,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:09,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:09,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:09,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:09,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:09,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:09,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:09,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:09,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:09,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:09,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:09,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 16:30:09,719 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:09,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:09,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:09,720 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:09,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:09,721 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:09,721 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:09,722 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:09,722 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:09,722 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:09,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:09,723 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:09,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:09,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:09,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:09,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:09,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:09,724 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:09,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:09,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:09,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:09,725 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:09,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:09,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:09,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:09,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:09,726 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:09,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:09,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:09,727 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:09,755 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:09,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:09,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:09,774 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:09,774 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:09,775 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2019-10-02 16:30:09,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0eee958/14cc4770025340f1b0c478982eddbb01/FLAG666a93a60 [2019-10-02 16:30:10,252 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:10,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2019-10-02 16:30:10,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0eee958/14cc4770025340f1b0c478982eddbb01/FLAG666a93a60 [2019-10-02 16:30:10,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0eee958/14cc4770025340f1b0c478982eddbb01 [2019-10-02 16:30:10,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:10,653 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:10,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:10,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:10,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:10,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:10" (1/1) ... [2019-10-02 16:30:10,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2506021a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10, skipping insertion in model container [2019-10-02 16:30:10,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:10" (1/1) ... [2019-10-02 16:30:10,673 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:10,693 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:10,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:10,872 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:10,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:10,920 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:10,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10 WrapperNode [2019-10-02 16:30:10,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:10,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:10,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:10,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:11,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10" (1/1) ... [2019-10-02 16:30:11,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10" (1/1) ... [2019-10-02 16:30:11,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10" (1/1) ... [2019-10-02 16:30:11,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10" (1/1) ... [2019-10-02 16:30:11,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10" (1/1) ... [2019-10-02 16:30:11,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10" (1/1) ... [2019-10-02 16:30:11,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10" (1/1) ... [2019-10-02 16:30:11,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:11,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:11,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:11,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:11,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10" (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 [2019-10-02 16:30:11,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:11,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:11,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:11,353 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:11,361 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-02 16:30:11,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:11 BoogieIcfgContainer [2019-10-02 16:30:11,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:11,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:11,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:11,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:11,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:10" (1/3) ... [2019-10-02 16:30:11,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e61c715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:11, skipping insertion in model container [2019-10-02 16:30:11,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:10" (2/3) ... [2019-10-02 16:30:11,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e61c715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:11, skipping insertion in model container [2019-10-02 16:30:11,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:11" (3/3) ... [2019-10-02 16:30:11,382 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_sentinel-2.i [2019-10-02 16:30:11,407 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:11,422 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:11,457 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:11,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:11,479 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:11,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:11,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:11,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:11,480 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:11,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:11,480 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-02 16:30:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-02 16:30:11,502 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:11,503 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:11,505 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:11,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:11,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1937003712, now seen corresponding path program 1 times [2019-10-02 16:30:11,513 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:11,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:11,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:11,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:11,560 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:11,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:11,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:11,642 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:11,645 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:11,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:11,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:11,658 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-10-02 16:30:11,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:11,671 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-02 16:30:11,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:11,673 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-02 16:30:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:11,680 INFO L225 Difference]: With dead ends: 23 [2019-10-02 16:30:11,680 INFO L226 Difference]: Without dead ends: 16 [2019-10-02 16:30:11,682 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-02 16:30:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-02 16:30:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-02 16:30:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-10-02 16:30:11,715 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2019-10-02 16:30:11,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:11,716 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-10-02 16:30:11,716 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-10-02 16:30:11,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 16:30:11,717 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:11,717 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:11,717 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:11,718 INFO L82 PathProgramCache]: Analyzing trace with hash 2120717648, now seen corresponding path program 1 times [2019-10-02 16:30:11,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:11,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:11,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:11,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:11,721 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:11,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:11,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:11,786 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:11,788 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:11,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:11,789 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2019-10-02 16:30:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:11,813 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-10-02 16:30:11,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:11,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-02 16:30:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:11,815 INFO L225 Difference]: With dead ends: 18 [2019-10-02 16:30:11,815 INFO L226 Difference]: Without dead ends: 18 [2019-10-02 16:30:11,816 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-02 16:30:11,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-10-02 16:30:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-02 16:30:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-02 16:30:11,820 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-10-02 16:30:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:11,821 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-02 16:30:11,821 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-02 16:30:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:30:11,821 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:11,822 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:11,822 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:11,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash 9910514, now seen corresponding path program 1 times [2019-10-02 16:30:11,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:11,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:11,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:11,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:11,825 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:30:11,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:11,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:30:11,964 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:11,964 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:30:11,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:30:11,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:30:11,965 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2019-10-02 16:30:12,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:12,026 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-10-02 16:30:12,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 16:30:12,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-02 16:30:12,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:12,028 INFO L225 Difference]: With dead ends: 22 [2019-10-02 16:30:12,028 INFO L226 Difference]: Without dead ends: 19 [2019-10-02 16:30:12,029 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:30:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-02 16:30:12,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-02 16:30:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-02 16:30:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-02 16:30:12,034 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2019-10-02 16:30:12,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:12,034 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-02 16:30:12,034 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:30:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-02 16:30:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-02 16:30:12,035 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:12,035 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:12,036 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:12,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:12,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1839474039, now seen corresponding path program 1 times [2019-10-02 16:30:12,037 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:12,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:12,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:12,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:12,039 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 16:30:12,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:12,089 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:12,090 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2019-10-02 16:30:12,092 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [21], [26], [29], [31], [41], [44], [46], [52], [53], [54], [56] [2019-10-02 16:30:12,130 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:12,130 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:12,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:12,198 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 23 variables. [2019-10-02 16:30:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:12,202 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:12,233 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:30:12,233 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:12,235 INFO L420 sIntCurrentIteration]: We unified 17 AI predicates to 17 [2019-10-02 16:30:12,235 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:12,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:12,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:30:12,236 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:12,237 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:12,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:12,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:12,238 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 2 states. [2019-10-02 16:30:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:12,238 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:30:12,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:12,239 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-02 16:30:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:12,239 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:30:12,239 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:12,240 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:12,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:12,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-02 16:30:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:12,241 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:12,241 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:12,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:12,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:12 BoogieIcfgContainer [2019-10-02 16:30:12,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:12,249 INFO L168 Benchmark]: Toolchain (without parser) took 1595.45 ms. Allocated memory was 130.5 MB in the beginning and 198.7 MB in the end (delta: 68.2 MB). Free memory was 86.7 MB in the beginning and 111.5 MB in the end (delta: -24.8 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:12,250 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 130.5 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:12,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.16 ms. Allocated memory is still 130.5 MB. Free memory was 86.5 MB in the beginning and 76.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:12,252 INFO L168 Benchmark]: Boogie Preprocessor took 124.33 ms. Allocated memory was 130.5 MB in the beginning and 198.7 MB in the end (delta: 68.2 MB). Free memory was 76.2 MB in the beginning and 174.3 MB in the end (delta: -98.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:12,252 INFO L168 Benchmark]: RCFGBuilder took 320.28 ms. Allocated memory is still 198.7 MB. Free memory was 174.3 MB in the beginning and 159.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:12,253 INFO L168 Benchmark]: TraceAbstraction took 878.36 ms. Allocated memory is still 198.7 MB. Free memory was 159.9 MB in the beginning and 111.5 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:12,257 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 130.5 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.16 ms. Allocated memory is still 130.5 MB. Free memory was 86.5 MB in the beginning and 76.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.33 ms. Allocated memory was 130.5 MB in the beginning and 198.7 MB in the end (delta: 68.2 MB). Free memory was 76.2 MB in the beginning and 174.3 MB in the end (delta: -98.1 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 320.28 ms. Allocated memory is still 198.7 MB. Free memory was 174.3 MB in the beginning and 159.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 878.36 ms. Allocated memory is still 198.7 MB. Free memory was 159.9 MB in the beginning and 111.5 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 2 SDslu, 51 SDs, 0 SdLazy, 20 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9264705882352942 AbsIntWeakeningRatio, 0.7647058823529411 AbsIntAvgWeakeningVarsNumRemoved, 0.35294117647058826 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 1315 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...