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 0.1.24-673a906-m [2019-10-03 02:34:47,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:34:47,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:34:47,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:34:47,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:34:47,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:34:47,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:34:47,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:34:47,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:34:47,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:34:47,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:34:47,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:34:47,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:34:47,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:34:47,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:34:47,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:34:47,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-03 02:34:47,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:34:47,459 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:34:47,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:34:47,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:34:47,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:34:47,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:34:47,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:34:47,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:34:47,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:34:47,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:34:47,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:34:47,465 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 [2019-10-03 02:34:47,480 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:34:47,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:34:47,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:34:47,481 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:34:47,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:34:47,482 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:34:47,482 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:34:47,482 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:34:47,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:34:47,483 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:34:47,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:34:47,484 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:34:47,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:34:47,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:34:47,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:34:47,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:34:47,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:34:47,485 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:34:47,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:34:47,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:34:47,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:34:47,486 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:34:47,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:34:47,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:34:47,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:34:47,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:34:47,487 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:34:47,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:34:47,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:34:47,488 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:34:47,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:34:47,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:34:47,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:34:47,535 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:34:47,535 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:34:47,536 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/invert_string-3.c [2019-10-03 02:34:47,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4adc4385/96aebf8949d7444a9bcc14bb54fae4b7/FLAGcc93dae97 [2019-10-03 02:34:48,038 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:34:48,039 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/invert_string-3.c [2019-10-03 02:34:48,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4adc4385/96aebf8949d7444a9bcc14bb54fae4b7/FLAGcc93dae97 [2019-10-03 02:34:48,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4adc4385/96aebf8949d7444a9bcc14bb54fae4b7 [2019-10-03 02:34:48,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:34:48,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:34:48,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:34:48,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:34:48,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:34:48,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:34:48" (1/1) ... [2019-10-03 02:34:48,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39284e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48, skipping insertion in model container [2019-10-03 02:34:48,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:34:48" (1/1) ... [2019-10-03 02:34:48,465 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:34:48,483 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:34:48,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:34:48,717 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:34:48,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:34:48,887 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:34:48,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48 WrapperNode [2019-10-03 02:34:48,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:34:48,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:34:48,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:34:48,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:34:48,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48" (1/1) ... [2019-10-03 02:34:48,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48" (1/1) ... [2019-10-03 02:34:48,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48" (1/1) ... [2019-10-03 02:34:48,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48" (1/1) ... [2019-10-03 02:34:48,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48" (1/1) ... [2019-10-03 02:34:48,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48" (1/1) ... [2019-10-03 02:34:48,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48" (1/1) ... [2019-10-03 02:34:48,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:34:48,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:34:48,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:34:48,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:34:48,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48" (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 [2019-10-03 02:34:48,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:34:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:34:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-03 02:34:48,994 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:34:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:34:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:34:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-03 02:34:48,994 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:34:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:34:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:34:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:34:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:34:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:34:48,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:34:49,321 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:34:49,321 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-03 02:34:49,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:34:49 BoogieIcfgContainer [2019-10-03 02:34:49,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:34:49,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:34:49,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:34:49,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:34:49,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:34:48" (1/3) ... [2019-10-03 02:34:49,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d107c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:34:49, skipping insertion in model container [2019-10-03 02:34:49,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:34:48" (2/3) ... [2019-10-03 02:34:49,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d107c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:34:49, skipping insertion in model container [2019-10-03 02:34:49,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:34:49" (3/3) ... [2019-10-03 02:34:49,342 INFO L109 eAbstractionObserver]: Analyzing ICFG invert_string-3.c [2019-10-03 02:34:49,367 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:34:49,374 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:34:49,388 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:34:49,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:34:49,413 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:34:49,413 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:34:49,414 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:34:49,414 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:34:49,414 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:34:49,414 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:34:49,414 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:34:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-03 02:34:49,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-03 02:34:49,436 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:34:49,437 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:34:49,439 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:34:49,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:49,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1778002988, now seen corresponding path program 1 times [2019-10-03 02:34:49,446 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:34:49,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:49,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:49,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:49,495 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:34:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:34:49,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:34:49,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:34:49,588 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:34:49,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:34:49,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:34:49,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:34:49,606 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-10-03 02:34:49,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:34:49,620 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-10-03 02:34:49,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:34:49,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-03 02:34:49,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:34:49,629 INFO L225 Difference]: With dead ends: 27 [2019-10-03 02:34:49,630 INFO L226 Difference]: Without dead ends: 22 [2019-10-03 02:34:49,632 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 [2019-10-03 02:34:49,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-03 02:34:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-03 02:34:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-03 02:34:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-10-03 02:34:49,668 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2019-10-03 02:34:49,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:34:49,668 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-10-03 02:34:49,668 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:34:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-10-03 02:34:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-03 02:34:49,669 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:34:49,670 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:34:49,670 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:34:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:49,671 INFO L82 PathProgramCache]: Analyzing trace with hash -262172122, now seen corresponding path program 1 times [2019-10-03 02:34:49,671 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:34:49,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:49,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:49,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:49,673 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:34:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:34:49,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:34:49,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:34:49,870 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:34:49,871 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:34:49,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:34:49,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:34:49,872 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2019-10-03 02:34:49,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:34:49,954 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-03 02:34:49,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:34:49,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-03 02:34:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:34:49,956 INFO L225 Difference]: With dead ends: 23 [2019-10-03 02:34:49,957 INFO L226 Difference]: Without dead ends: 23 [2019-10-03 02:34:49,958 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:34:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-03 02:34:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-03 02:34:49,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-03 02:34:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-10-03 02:34:49,963 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2019-10-03 02:34:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:34:49,964 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-10-03 02:34:49,964 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:34:49,964 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-10-03 02:34:49,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-03 02:34:49,965 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:34:49,965 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:34:49,966 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:34:49,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:49,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1485613060, now seen corresponding path program 1 times [2019-10-03 02:34:49,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:34:49,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:49,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:49,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:49,969 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:34:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:50,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:34:50,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:34:50,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:34:50,183 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:34:50,183 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:34:50,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:34:50,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:34:50,184 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2019-10-03 02:34:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:34:50,229 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-03 02:34:50,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:34:50,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-03 02:34:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:34:50,231 INFO L225 Difference]: With dead ends: 25 [2019-10-03 02:34:50,231 INFO L226 Difference]: Without dead ends: 25 [2019-10-03 02:34:50,233 INFO L640 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 [2019-10-03 02:34:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-03 02:34:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-10-03 02:34:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-03 02:34:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-10-03 02:34:50,240 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2019-10-03 02:34:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:34:50,241 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-10-03 02:34:50,241 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:34:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-10-03 02:34:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-03 02:34:50,242 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:34:50,242 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:34:50,243 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:34:50,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:50,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1323409058, now seen corresponding path program 1 times [2019-10-03 02:34:50,243 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:34:50,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:50,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:34:50,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:34:50,247 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:34:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:34:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:34:50,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:34:50,400 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:34:50,401 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-10-03 02:34:50,403 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [41], [51], [54], [56], [62], [63], [64], [66] [2019-10-03 02:34:50,442 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:34:50,442 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:34:50,538 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:34:50,540 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. [2019-10-03 02:34:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:34:50,545 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:34:50,606 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-03 02:34:50,607 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:34:50,609 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-10-03 02:34:50,609 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:34:50,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:34:50,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-10-03 02:34:50,611 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:34:50,612 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:34:50,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:34:50,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:34:50,614 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 2 states. [2019-10-03 02:34:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:34:50,615 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-03 02:34:50,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:34:50,616 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-10-03 02:34:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:34:50,616 INFO L225 Difference]: With dead ends: 6 [2019-10-03 02:34:50,616 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:34:50,617 INFO L640 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 [2019-10-03 02:34:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:34:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:34:50,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:34:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:34:50,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-10-03 02:34:50,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:34:50,621 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:34:50,621 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:34:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:34:50,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:34:50,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:34:50 BoogieIcfgContainer [2019-10-03 02:34:50,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:34:50,632 INFO L168 Benchmark]: Toolchain (without parser) took 2180.20 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 94.8 MB in the beginning and 94.5 MB in the end (delta: 220.9 kB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:50,634 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 112.6 MB in the beginning and 112.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:34:50,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.25 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 94.5 MB in the beginning and 179.1 MB in the end (delta: -84.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:50,638 INFO L168 Benchmark]: Boogie Preprocessor took 45.43 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 177.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:50,641 INFO L168 Benchmark]: RCFGBuilder took 389.00 ms. Allocated memory is still 201.9 MB. Free memory was 177.0 MB in the beginning and 161.5 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:50,643 INFO L168 Benchmark]: TraceAbstraction took 1296.60 ms. Allocated memory is still 201.9 MB. Free memory was 160.9 MB in the beginning and 94.5 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:34:50,653 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 112.6 MB in the beginning and 112.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 438.25 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 94.5 MB in the beginning and 179.1 MB in the end (delta: -84.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.43 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 177.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 389.00 ms. Allocated memory is still 201.9 MB. Free memory was 177.0 MB in the beginning and 161.5 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1296.60 ms. Allocated memory is still 201.9 MB. Free memory was 160.9 MB in the beginning and 94.5 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 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, 0.2s SatisfiabilityAnalysisTime, 0.4s 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...