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_compare_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:48,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:48,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:48,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:29:48,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:48,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:48,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:48,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:48,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:48,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:48,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:48,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:48,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:48,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:48,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:48,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:48,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:48,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:48,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:48,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:48,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:48,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:48,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:48,854 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:48,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:48,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:48,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:48,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:48,856 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 16:29:48,872 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:48,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:48,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:48,873 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:48,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:48,873 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:48,874 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:48,874 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:48,874 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:48,874 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:48,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:48,875 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:48,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:48,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:48,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:48,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:48,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:48,876 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:48,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:48,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:48,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:48,877 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:48,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:48,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:48,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:48,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:48,878 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:48,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:48,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:48,879 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:48,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:48,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:48,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:48,924 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:48,924 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:48,925 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_compare_ground.i [2019-10-02 16:29:48,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d0b455a9/aa0eda83f8b64e6fb29ab3d33eb1b243/FLAG96c2a040c [2019-10-02 16:29:49,486 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:49,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_compare_ground.i [2019-10-02 16:29:49,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d0b455a9/aa0eda83f8b64e6fb29ab3d33eb1b243/FLAG96c2a040c [2019-10-02 16:29:49,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d0b455a9/aa0eda83f8b64e6fb29ab3d33eb1b243 [2019-10-02 16:29:49,832 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:49,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:49,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:49,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:49,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:49,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ba2018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:49, skipping insertion in model container [2019-10-02 16:29:49,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:49" (1/1) ... [2019-10-02 16:29:49,853 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:49,869 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:50,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:50,042 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:50,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:50,088 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:50,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50 WrapperNode [2019-10-02 16:29:50,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:50,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:50,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:50,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:50,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:50,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:50,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:50,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:50,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (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 16:29:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:50,582 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:50,583 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 16:29:50,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:50 BoogieIcfgContainer [2019-10-02 16:29:50,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:50,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:50,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:50,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:50,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:49" (1/3) ... [2019-10-02 16:29:50,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a138318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:50, skipping insertion in model container [2019-10-02 16:29:50,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (2/3) ... [2019-10-02 16:29:50,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a138318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:50, skipping insertion in model container [2019-10-02 16:29:50,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:50" (3/3) ... [2019-10-02 16:29:50,607 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_compare_ground.i [2019-10-02 16:29:50,629 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:50,647 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:50,662 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:50,685 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:50,685 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:50,685 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:50,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:50,685 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:50,685 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:50,686 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:50,686 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-02 16:29:50,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 16:29:50,706 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:50,707 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:50,709 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:50,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:50,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1983579869, now seen corresponding path program 1 times [2019-10-02 16:29:50,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:50,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:50,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,767 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:50,852 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 16:29:50,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:50,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:50,855 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:50,859 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:50,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:50,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:50,873 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-02 16:29:50,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:50,888 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-10-02 16:29:50,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:50,889 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-02 16:29:50,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:50,899 INFO L225 Difference]: With dead ends: 28 [2019-10-02 16:29:50,899 INFO L226 Difference]: Without dead ends: 23 [2019-10-02 16:29:50,901 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 16:29:50,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-02 16:29:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-02 16:29:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-02 16:29:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-10-02 16:29:50,938 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2019-10-02 16:29:50,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:50,939 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-10-02 16:29:50,939 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-10-02 16:29:50,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-02 16:29:50,940 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:50,941 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:50,941 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:50,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:50,942 INFO L82 PathProgramCache]: Analyzing trace with hash -901393582, now seen corresponding path program 1 times [2019-10-02 16:29:50,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:50,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:50,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:50,945 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:50,999 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 16:29:50,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:50,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:50,999 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:51,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:51,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:51,007 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2019-10-02 16:29:51,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,041 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-10-02 16:29:51,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:51,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-02 16:29:51,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,044 INFO L225 Difference]: With dead ends: 25 [2019-10-02 16:29:51,045 INFO L226 Difference]: Without dead ends: 25 [2019-10-02 16:29:51,046 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 16:29:51,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-02 16:29:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-10-02 16:29:51,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-02 16:29:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-10-02 16:29:51,056 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2019-10-02 16:29:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,056 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-10-02 16:29:51,056 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-10-02 16:29:51,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-02 16:29:51,058 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,058 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 16:29:51,058 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,059 INFO L82 PathProgramCache]: Analyzing trace with hash 211155632, now seen corresponding path program 1 times [2019-10-02 16:29:51,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,065 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,154 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 16:29:51,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:51,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:51,155 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,156 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:51,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:51,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:51,157 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 3 states. [2019-10-02 16:29:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,171 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-02 16:29:51,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:51,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-02 16:29:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,173 INFO L225 Difference]: With dead ends: 27 [2019-10-02 16:29:51,173 INFO L226 Difference]: Without dead ends: 27 [2019-10-02 16:29:51,174 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 16:29:51,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-02 16:29:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-10-02 16:29:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-02 16:29:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-02 16:29:51,179 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-10-02 16:29:51,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,179 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-02 16:29:51,179 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-02 16:29:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:29:51,180 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,181 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:51,181 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1966133540, now seen corresponding path program 1 times [2019-10-02 16:29:51,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,184 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,282 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 16:29:51,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:51,282 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:51,283 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2019-10-02 16:29:51,285 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [26], [28], [33], [35], [41], [49], [62], [65], [67], [73], [74], [75], [77] [2019-10-02 16:29:51,323 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:51,323 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:51,395 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:51,397 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 27 variables. [2019-10-02 16:29:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,401 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:51,439 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:51,439 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:51,441 INFO L420 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-10-02 16:29:51,442 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:51,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:51,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:29:51,443 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,443 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:51,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:51,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:51,444 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 2 states. [2019-10-02 16:29:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,445 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:51,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:51,446 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-02 16:29:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,446 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:51,446 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:51,447 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 16:29:51,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:51,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:51,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-02 16:29:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,448 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:51,448 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:51,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:51,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:51 BoogieIcfgContainer [2019-10-02 16:29:51,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:51,457 INFO L168 Benchmark]: Toolchain (without parser) took 1622.46 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 85.4 MB in the beginning and 113.5 MB in the end (delta: -28.1 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,460 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.55 ms. Allocated memory is still 137.9 MB. Free memory was 85.2 MB in the beginning and 75.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,462 INFO L168 Benchmark]: Boogie Preprocessor took 128.64 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 75.1 MB in the beginning and 174.9 MB in the end (delta: -99.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,463 INFO L168 Benchmark]: RCFGBuilder took 365.17 ms. Allocated memory is still 198.2 MB. Free memory was 174.9 MB in the beginning and 159.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,463 INFO L168 Benchmark]: TraceAbstraction took 862.26 ms. Allocated memory is still 198.2 MB. Free memory was 158.7 MB in the beginning and 113.5 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:51,468 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 254.55 ms. Allocated memory is still 137.9 MB. Free memory was 85.2 MB in the beginning and 75.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.64 ms. Allocated memory was 137.9 MB in the beginning and 198.2 MB in the end (delta: 60.3 MB). Free memory was 75.1 MB in the beginning and 174.9 MB in the end (delta: -99.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 365.17 ms. Allocated memory is still 198.2 MB. Free memory was 174.9 MB in the beginning and 159.4 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 862.26 ms. Allocated memory is still 198.2 MB. Free memory was 158.7 MB in the beginning and 113.5 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 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, 28 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 85 SDtfs, 4 SDslu, 44 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.9342105263157895 AbsIntWeakeningRatio, 0.8947368421052632 AbsIntAvgWeakeningVarsNumRemoved, 0.3157894736842105 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 1183 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...