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/loops/invert_string-3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:02,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:02,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:02,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:02,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:25:02,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:25:02,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:25:02,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:25:02,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:25:02,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:25:02,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:25:02,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:25:02,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:25:02,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:25:02,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:25:02,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:25:02,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:25:02,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:25:02,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:25:02,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:25:02,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:25:02,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:25:02,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:25:02,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:25:02,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:25:02,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:25:02,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:25:02,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:25:02,881 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 [2019-09-20 13:25:02,897 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:02,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:02,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:02,898 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:02,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:02,899 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:02,899 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:02,899 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:02,900 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:02,900 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:02,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:02,901 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:02,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:02,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:02,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:02,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:02,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:02,902 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:02,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:02,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:02,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:02,903 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:02,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:02,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:02,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:02,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:02,904 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:02,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:02,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:02,905 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:02,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:02,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:02,956 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:02,958 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:02,958 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:02,959 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/invert_string-3.c [2019-09-20 13:25:03,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201df9f79/3f9708dac3994dc494a735eeec860783/FLAGde959cd43 [2019-09-20 13:25:03,509 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:03,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/invert_string-3.c [2019-09-20 13:25:03,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201df9f79/3f9708dac3994dc494a735eeec860783/FLAGde959cd43 [2019-09-20 13:25:03,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201df9f79/3f9708dac3994dc494a735eeec860783 [2019-09-20 13:25:03,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:03,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:03,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:03,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:03,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:03,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:03" (1/1) ... [2019-09-20 13:25:03,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f676bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:03, skipping insertion in model container [2019-09-20 13:25:03,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:03" (1/1) ... [2019-09-20 13:25:03,876 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:03,896 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:04,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:04,101 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:04,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:04,149 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:04,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04 WrapperNode [2019-09-20 13:25:04,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:04,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:04,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:04,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:04,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... [2019-09-20 13:25:04,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:04,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:04,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:04,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:04,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:04,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-20 13:25:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:25:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:25:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:25:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:25:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:04,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:04,643 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:04,643 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:25:04,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:04 BoogieIcfgContainer [2019-09-20 13:25:04,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:04,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:04,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:04,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:04,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:03" (1/3) ... [2019-09-20 13:25:04,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4455a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:04, skipping insertion in model container [2019-09-20 13:25:04,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:04" (2/3) ... [2019-09-20 13:25:04,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4455a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:04, skipping insertion in model container [2019-09-20 13:25:04,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:04" (3/3) ... [2019-09-20 13:25:04,655 INFO L109 eAbstractionObserver]: Analyzing ICFG invert_string-3.c [2019-09-20 13:25:04,671 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:04,682 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:04,702 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:04,733 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:04,733 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:04,733 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:04,734 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:04,734 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:04,734 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:04,734 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:04,734 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:04,752 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-09-20 13:25:04,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-20 13:25:04,762 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:04,763 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:04,765 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:04,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1778002988, now seen corresponding path program 1 times [2019-09-20 13:25:04,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:04,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:04,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:04,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:04,859 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:04,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:04,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:25:04,955 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:04,958 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:25:04,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:25:04,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:04,976 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-09-20 13:25:04,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:04,994 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-09-20 13:25:04,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:25:04,996 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-20 13:25:04,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:05,005 INFO L225 Difference]: With dead ends: 27 [2019-09-20 13:25:05,006 INFO L226 Difference]: Without dead ends: 22 [2019-09-20 13:25:05,008 INFO L636 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 [2019-09-20 13:25:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-20 13:25:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-20 13:25:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-20 13:25:05,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-09-20 13:25:05,051 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2019-09-20 13:25:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:05,052 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-09-20 13:25:05,052 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:25:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-09-20 13:25:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-20 13:25:05,053 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:05,053 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:05,054 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:05,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:05,054 INFO L82 PathProgramCache]: Analyzing trace with hash -262172122, now seen corresponding path program 1 times [2019-09-20 13:25:05,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:05,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:05,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,057 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:05,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:05,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:25:05,229 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:05,231 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:25:05,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:25:05,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:25:05,232 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2019-09-20 13:25:05,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:05,307 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-20 13:25:05,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:25:05,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-09-20 13:25:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:05,309 INFO L225 Difference]: With dead ends: 23 [2019-09-20 13:25:05,310 INFO L226 Difference]: Without dead ends: 23 [2019-09-20 13:25:05,311 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-20 13:25:05,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-20 13:25:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-20 13:25:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-20 13:25:05,316 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2019-09-20 13:25:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:05,317 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-20 13:25:05,317 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:25:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-20 13:25:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:25:05,318 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:05,319 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:05,319 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:05,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:05,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1485613060, now seen corresponding path program 1 times [2019-09-20 13:25:05,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:05,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:05,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,322 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:25:05,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:05,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:25:05,468 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:05,468 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:25:05,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:25:05,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:25:05,469 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2019-09-20 13:25:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:05,510 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-20 13:25:05,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:25:05,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-09-20 13:25:05,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:05,514 INFO L225 Difference]: With dead ends: 25 [2019-09-20 13:25:05,514 INFO L226 Difference]: Without dead ends: 25 [2019-09-20 13:25:05,515 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:25:05,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-20 13:25:05,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-09-20 13:25:05,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-20 13:25:05,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-20 13:25:05,523 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2019-09-20 13:25:05,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:05,523 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-20 13:25:05,523 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:25:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-20 13:25:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-20 13:25:05,524 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:05,525 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:05,525 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:05,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1323409058, now seen corresponding path program 1 times [2019-09-20 13:25:05,526 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:05,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:05,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:05,529 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:25:05,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:05,717 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:05,718 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-20 13:25:05,721 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [41], [51], [54], [56], [62], [63], [64], [66] [2019-09-20 13:25:05,772 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:05,772 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:05,858 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:25:05,860 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 16 root evaluator evaluations with a maximum evaluation depth of 0. Performed 16 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-20 13:25:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:05,864 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:25:05,912 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:25:05,912 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:25:05,914 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-20 13:25:05,915 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:25:05,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:25:05,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-20 13:25:05,916 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:05,918 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:25:05,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:25:05,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:05,919 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 2 states. [2019-09-20 13:25:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:05,921 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:25:05,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:25:05,921 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-20 13:25:05,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:05,921 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:25:05,922 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:05,922 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:05,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-20 13:25:05,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:05,925 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:05,925 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:25:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:05,925 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:05,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:05 BoogieIcfgContainer [2019-09-20 13:25:05,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:05,935 INFO L168 Benchmark]: Toolchain (without parser) took 2074.77 ms. Allocated memory was 139.5 MB in the beginning and 198.7 MB in the end (delta: 59.2 MB). Free memory was 87.0 MB in the beginning and 92.4 MB in the end (delta: -5.4 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:05,936 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:05,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.79 ms. Allocated memory is still 139.5 MB. Free memory was 86.8 MB in the beginning and 76.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:05,940 INFO L168 Benchmark]: Boogie Preprocessor took 162.50 ms. Allocated memory was 139.5 MB in the beginning and 198.7 MB in the end (delta: 59.2 MB). Free memory was 76.5 MB in the beginning and 175.5 MB in the end (delta: -98.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:05,941 INFO L168 Benchmark]: RCFGBuilder took 331.16 ms. Allocated memory is still 198.7 MB. Free memory was 175.5 MB in the beginning and 159.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:05,942 INFO L168 Benchmark]: TraceAbstraction took 1284.52 ms. Allocated memory is still 198.7 MB. Free memory was 159.6 MB in the beginning and 92.4 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:05,948 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 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.79 ms. Allocated memory is still 139.5 MB. Free memory was 86.8 MB in the beginning and 76.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.50 ms. Allocated memory was 139.5 MB in the beginning and 198.7 MB in the end (delta: 59.2 MB). Free memory was 76.5 MB in the beginning and 175.5 MB in the end (delta: -98.9 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.16 ms. Allocated memory is still 198.7 MB. Free memory was 175.5 MB in the beginning and 159.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1284.52 ms. Allocated memory is still 198.7 MB. Free memory was 159.6 MB in the beginning and 92.4 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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, 27 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 71 SDtfs, 13 SDslu, 35 SDs, 0 SdLazy, 23 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.9027777777777778 AbsIntWeakeningRatio, 1.1666666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.3333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 2064 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...