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_two_index_06.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:13,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:13,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:13,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:30:13,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:13,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:13,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:13,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:13,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:13,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:13,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:13,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:13,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:13,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:13,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:13,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:13,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:13,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:13,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:13,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:13,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:13,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:13,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:13,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:13,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:13,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:13,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:13,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:13,525 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 16:30:13,549 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:13,549 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:13,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:13,550 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:13,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:13,552 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:13,552 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:13,552 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:13,553 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:13,553 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:13,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:13,554 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:13,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:13,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:13,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:13,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:13,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:13,555 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:13,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:13,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:13,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:13,557 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:13,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:13,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:13,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:13,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:13,558 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:13,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:13,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:13,558 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:13,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:13,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:13,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:13,628 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:13,629 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:13,630 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_06.i [2019-10-02 16:30:13,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbce4b250/41501904396f4647b647e6224d4f7296/FLAG082c9a846 [2019-10-02 16:30:14,138 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:14,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_06.i [2019-10-02 16:30:14,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbce4b250/41501904396f4647b647e6224d4f7296/FLAG082c9a846 [2019-10-02 16:30:14,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbce4b250/41501904396f4647b647e6224d4f7296 [2019-10-02 16:30:14,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:14,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:14,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:14,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:14,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:14,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:14" (1/1) ... [2019-10-02 16:30:14,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fba2a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14, skipping insertion in model container [2019-10-02 16:30:14,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:14" (1/1) ... [2019-10-02 16:30:14,543 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:14,558 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:14,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:14,742 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:14,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:14,786 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:14,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14 WrapperNode [2019-10-02 16:30:14,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:14,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:14,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:14,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:14,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14" (1/1) ... [2019-10-02 16:30:14,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14" (1/1) ... [2019-10-02 16:30:14,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14" (1/1) ... [2019-10-02 16:30:14,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14" (1/1) ... [2019-10-02 16:30:14,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14" (1/1) ... [2019-10-02 16:30:14,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14" (1/1) ... [2019-10-02 16:30:14,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14" (1/1) ... [2019-10-02 16:30:14,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:14,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:14,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:14,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:14,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14" (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 16:30:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:14,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:14,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:14,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:14,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:14,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:15,213 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:15,213 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 16:30:15,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:15 BoogieIcfgContainer [2019-10-02 16:30:15,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:15,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:15,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:15,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:15,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:14" (1/3) ... [2019-10-02 16:30:15,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdc2d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:15, skipping insertion in model container [2019-10-02 16:30:15,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:14" (2/3) ... [2019-10-02 16:30:15,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdc2d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:15, skipping insertion in model container [2019-10-02 16:30:15,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:15" (3/3) ... [2019-10-02 16:30:15,231 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_two_index_06.i [2019-10-02 16:30:15,240 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:15,248 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:15,267 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:15,294 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:15,295 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:15,295 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:15,295 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:15,295 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:15,295 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:15,295 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:15,295 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-02 16:30:15,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 16:30:15,315 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:15,315 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:15,317 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:15,322 INFO L82 PathProgramCache]: Analyzing trace with hash -2029643862, now seen corresponding path program 1 times [2019-10-02 16:30:15,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:15,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:15,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:15,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:15,374 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:15,459 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 16:30:15,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:15,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:15,461 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:15,464 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:15,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:15,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:15,478 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-02 16:30:15,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:15,491 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-10-02 16:30:15,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:15,493 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-02 16:30:15,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:15,501 INFO L225 Difference]: With dead ends: 24 [2019-10-02 16:30:15,502 INFO L226 Difference]: Without dead ends: 19 [2019-10-02 16:30:15,503 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 16:30:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-02 16:30:15,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-02 16:30:15,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-02 16:30:15,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2019-10-02 16:30:15,538 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2019-10-02 16:30:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:15,539 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2019-10-02 16:30:15,539 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2019-10-02 16:30:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 16:30:15,540 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:15,540 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:15,541 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:15,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:15,541 INFO L82 PathProgramCache]: Analyzing trace with hash 905206694, now seen corresponding path program 1 times [2019-10-02 16:30:15,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:15,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:15,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:15,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:15,544 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:15,602 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 16:30:15,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:15,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:15,603 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:15,605 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:15,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:15,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:15,609 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2019-10-02 16:30:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:15,656 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-02 16:30:15,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:15,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-02 16:30:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:15,658 INFO L225 Difference]: With dead ends: 20 [2019-10-02 16:30:15,658 INFO L226 Difference]: Without dead ends: 20 [2019-10-02 16:30:15,659 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 16:30:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-02 16:30:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-02 16:30:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-02 16:30:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-02 16:30:15,664 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2019-10-02 16:30:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:15,665 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-02 16:30:15,665 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-02 16:30:15,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-02 16:30:15,666 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:15,666 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:15,666 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:15,667 INFO L82 PathProgramCache]: Analyzing trace with hash -764882998, now seen corresponding path program 1 times [2019-10-02 16:30:15,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:15,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:15,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:15,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:15,673 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:15,741 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 16:30:15,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:15,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:15,742 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:15,742 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:15,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:15,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:15,743 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 3 states. [2019-10-02 16:30:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:15,778 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-10-02 16:30:15,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:15,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-02 16:30:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:15,781 INFO L225 Difference]: With dead ends: 24 [2019-10-02 16:30:15,782 INFO L226 Difference]: Without dead ends: 24 [2019-10-02 16:30:15,782 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 16:30:15,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-02 16:30:15,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-10-02 16:30:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-02 16:30:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-10-02 16:30:15,790 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2019-10-02 16:30:15,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:15,791 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-10-02 16:30:15,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-10-02 16:30:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-02 16:30:15,793 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:15,794 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:15,794 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:15,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:15,794 INFO L82 PathProgramCache]: Analyzing trace with hash -59429947, now seen corresponding path program 1 times [2019-10-02 16:30:15,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:15,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:15,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:15,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:15,798 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:30:15,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:15,882 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:15,883 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2019-10-02 16:30:15,885 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [12], [14], [18], [25], [27], [31], [40], [48], [51], [53], [59], [60], [61], [63] [2019-10-02 16:30:15,921 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:15,921 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:15,974 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:15,976 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 22 variables. [2019-10-02 16:30:15,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:15,978 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:16,009 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:30:16,009 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:16,011 INFO L420 sIntCurrentIteration]: We unified 16 AI predicates to 16 [2019-10-02 16:30:16,011 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:16,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:16,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:30:16,012 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:16,012 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:16,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:16,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:16,013 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 2 states. [2019-10-02 16:30:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:16,014 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:30:16,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:16,014 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-02 16:30:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:16,014 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:30:16,014 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:16,015 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 16:30:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:16,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:16,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-02 16:30:16,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:16,016 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:16,016 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:16,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:16,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:16,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:16 BoogieIcfgContainer [2019-10-02 16:30:16,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:16,023 INFO L168 Benchmark]: Toolchain (without parser) took 1494.21 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 89.4 MB in the beginning and 115.2 MB in the end (delta: -25.7 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:16,024 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:16,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.99 ms. Allocated memory is still 133.7 MB. Free memory was 89.2 MB in the beginning and 79.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:16,026 INFO L168 Benchmark]: Boogie Preprocessor took 131.95 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 79.1 MB in the beginning and 176.2 MB in the end (delta: -97.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:16,027 INFO L168 Benchmark]: RCFGBuilder took 294.78 ms. Allocated memory is still 200.3 MB. Free memory was 176.2 MB in the beginning and 161.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:16,028 INFO L168 Benchmark]: TraceAbstraction took 802.04 ms. Allocated memory is still 200.3 MB. Free memory was 161.0 MB in the beginning and 115.2 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:16,032 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory was 107.7 MB in the beginning and 107.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.99 ms. Allocated memory is still 133.7 MB. Free memory was 89.2 MB in the beginning and 79.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.95 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 79.1 MB in the beginning and 176.2 MB in the end (delta: -97.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 294.78 ms. Allocated memory is still 200.3 MB. Free memory was 176.2 MB in the beginning and 161.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 802.04 ms. Allocated memory is still 200.3 MB. Free memory was 161.0 MB in the beginning and 115.2 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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, 24 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 SDtfs, 1 SDslu, 24 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.90625 AbsIntWeakeningRatio, 1.0 AbsIntAvgWeakeningVarsNumRemoved, 0.375 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 995 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...