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-tiling/mbpr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:04:16,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:04:16,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:04:16,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 17:04:16,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:04:16,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:04:16,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:04:16,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:04:16,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:04:16,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:04:16,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:04:16,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:04:16,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:04:16,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:04:16,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:04:16,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:04:16,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 17:04:16,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:04:16,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:04:16,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:04:16,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:04:16,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:04:16,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:04:16,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:04:16,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:04:16,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:04:16,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:04:16,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:04:16,194 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 [2019-09-16 17:04:16,209 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:04:16,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:04:16,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:04:16,210 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:04:16,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:04:16,211 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:04:16,211 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:04:16,211 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:04:16,211 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:04:16,212 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:04:16,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:04:16,213 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:04:16,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:04:16,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:04:16,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:04:16,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:04:16,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:04:16,214 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:04:16,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:04:16,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:04:16,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:04:16,215 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:04:16,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:04:16,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:04:16,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:04:16,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:04:16,216 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:04:16,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:04:16,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:04:16,216 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:04:16,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:04:16,258 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:04:16,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:04:16,263 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:04:16,264 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:04:16,265 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c [2019-09-16 17:04:16,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c105ef6e/4dfce157cfa24654bdc1d1b4b4175d63/FLAGd458916ab [2019-09-16 17:04:16,767 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:04:16,768 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr4.c [2019-09-16 17:04:16,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c105ef6e/4dfce157cfa24654bdc1d1b4b4175d63/FLAGd458916ab [2019-09-16 17:04:17,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c105ef6e/4dfce157cfa24654bdc1d1b4b4175d63 [2019-09-16 17:04:17,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:04:17,174 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:04:17,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:17,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:04:17,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:04:17,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:17" (1/1) ... [2019-09-16 17:04:17,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45111532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17, skipping insertion in model container [2019-09-16 17:04:17,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:04:17" (1/1) ... [2019-09-16 17:04:17,191 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:04:17,212 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:04:17,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:17,421 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:04:17,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:04:17,585 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:04:17,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17 WrapperNode [2019-09-16 17:04:17,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:04:17,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:04:17,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:04:17,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:04:17,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17" (1/1) ... [2019-09-16 17:04:17,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17" (1/1) ... [2019-09-16 17:04:17,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17" (1/1) ... [2019-09-16 17:04:17,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17" (1/1) ... [2019-09-16 17:04:17,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17" (1/1) ... [2019-09-16 17:04:17,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17" (1/1) ... [2019-09-16 17:04:17,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17" (1/1) ... [2019-09-16 17:04:17,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:04:17,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:04:17,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:04:17,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:04:17,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17" (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 [2019-09-16 17:04:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:04:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:04:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 17:04:17,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:04:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:04:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 17:04:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 17:04:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:04:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:04:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:04:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:04:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:04:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:04:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:04:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:04:18,140 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:04:18,140 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-16 17:04:18,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:18 BoogieIcfgContainer [2019-09-16 17:04:18,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:04:18,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:04:18,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:04:18,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:04:18,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:04:17" (1/3) ... [2019-09-16 17:04:18,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cdca53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:18, skipping insertion in model container [2019-09-16 17:04:18,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:04:17" (2/3) ... [2019-09-16 17:04:18,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73cdca53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:04:18, skipping insertion in model container [2019-09-16 17:04:18,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:04:18" (3/3) ... [2019-09-16 17:04:18,151 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2019-09-16 17:04:18,161 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:04:18,169 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:04:18,186 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:04:18,214 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:04:18,214 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:04:18,215 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:04:18,215 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:04:18,215 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:04:18,215 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:04:18,215 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:04:18,215 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:04:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-09-16 17:04:18,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-16 17:04:18,241 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:18,242 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:18,244 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:18,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1961398023, now seen corresponding path program 1 times [2019-09-16 17:04:18,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:18,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:18,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:18,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:18,311 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:18,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:18,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:04:18,430 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:18,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:04:18,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:04:18,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:04:18,454 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-09-16 17:04:18,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:18,471 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-09-16 17:04:18,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:04:18,473 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-09-16 17:04:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:18,483 INFO L225 Difference]: With dead ends: 45 [2019-09-16 17:04:18,484 INFO L226 Difference]: Without dead ends: 39 [2019-09-16 17:04:18,486 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 [2019-09-16 17:04:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-16 17:04:18,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-16 17:04:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-16 17:04:18,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2019-09-16 17:04:18,526 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 22 [2019-09-16 17:04:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:18,527 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2019-09-16 17:04:18,527 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:04:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2019-09-16 17:04:18,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-16 17:04:18,529 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:18,529 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:18,529 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:18,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:18,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1084797805, now seen corresponding path program 1 times [2019-09-16 17:04:18,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:18,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:18,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:18,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:18,533 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:18,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:18,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 17:04:18,699 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:18,700 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 17:04:18,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 17:04:18,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 17:04:18,702 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 5 states. [2019-09-16 17:04:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:18,774 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-09-16 17:04:18,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 17:04:18,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-09-16 17:04:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:18,777 INFO L225 Difference]: With dead ends: 45 [2019-09-16 17:04:18,777 INFO L226 Difference]: Without dead ends: 45 [2019-09-16 17:04:18,778 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:04:18,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-16 17:04:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-09-16 17:04:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-16 17:04:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-09-16 17:04:18,786 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 22 [2019-09-16 17:04:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:18,787 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-09-16 17:04:18,787 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 17:04:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-09-16 17:04:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-16 17:04:18,789 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:18,789 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:18,789 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:18,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:18,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1082950763, now seen corresponding path program 1 times [2019-09-16 17:04:18,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:18,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:18,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:18,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:18,792 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:19,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:04:19,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-16 17:04:19,031 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:19,031 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-16 17:04:19,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-16 17:04:19,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:04:19,032 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2019-09-16 17:04:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:19,166 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2019-09-16 17:04:19,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-16 17:04:19,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-09-16 17:04:19,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:19,170 INFO L225 Difference]: With dead ends: 48 [2019-09-16 17:04:19,170 INFO L226 Difference]: Without dead ends: 48 [2019-09-16 17:04:19,171 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-16 17:04:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-09-16 17:04:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2019-09-16 17:04:19,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-09-16 17:04:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2019-09-16 17:04:19,178 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 22 [2019-09-16 17:04:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:19,179 INFO L475 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2019-09-16 17:04:19,179 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-16 17:04:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2019-09-16 17:04:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-16 17:04:19,180 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:04:19,181 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 17:04:19,181 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:04:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1675538566, now seen corresponding path program 1 times [2019-09-16 17:04:19,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:04:19,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:19,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:04:19,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:04:19,184 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:04:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:04:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 17:04:19,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 17:04:19,362 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-16 17:04:19,363 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2019-09-16 17:04:19,365 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [18], [20], [23], [27], [29], [33], [39], [54], [60], [75], [81], [96], [104], [109], [124], [127], [129], [135], [136], [137], [139] [2019-09-16 17:04:19,417 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-16 17:04:19,417 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-16 17:04:19,504 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-16 17:04:19,506 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 22 root evaluator evaluations with a maximum evaluation depth of 2. Performed 22 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 30 variables. [2019-09-16 17:04:19,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:04:19,510 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-16 17:04:19,568 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-09-16 17:04:19,569 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-16 17:04:19,573 INFO L420 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-09-16 17:04:19,573 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-16 17:04:19,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-16 17:04:19,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-16 17:04:19,574 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:04:19,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:04:19,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:04:19,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:19,576 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 3 states. [2019-09-16 17:04:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:04:19,578 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-16 17:04:19,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:04:19,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-09-16 17:04:19,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:04:19,578 INFO L225 Difference]: With dead ends: 7 [2019-09-16 17:04:19,579 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:04:19,579 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:04:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:04:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:04:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:04:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:04:19,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-09-16 17:04:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:04:19,581 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:04:19,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:04:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:04:19,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:04:19,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:04:19 BoogieIcfgContainer [2019-09-16 17:04:19,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:04:19,589 INFO L168 Benchmark]: Toolchain (without parser) took 2414.44 ms. Allocated memory was 131.6 MB in the beginning and 220.2 MB in the end (delta: 88.6 MB). Free memory was 87.4 MB in the beginning and 180.8 MB in the end (delta: -93.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:04:19,590 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:04:19,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.20 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 87.2 MB in the beginning and 173.8 MB in the end (delta: -86.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:19,592 INFO L168 Benchmark]: Boogie Preprocessor took 62.39 ms. Allocated memory is still 198.7 MB. Free memory was 173.8 MB in the beginning and 171.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:19,593 INFO L168 Benchmark]: RCFGBuilder took 493.06 ms. Allocated memory is still 198.7 MB. Free memory was 171.9 MB in the beginning and 150.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:04:19,594 INFO L168 Benchmark]: TraceAbstraction took 1443.53 ms. Allocated memory was 198.7 MB in the beginning and 220.2 MB in the end (delta: 21.5 MB). Free memory was 149.6 MB in the beginning and 180.8 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-16 17:04:19,598 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 131.6 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 411.20 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 87.2 MB in the beginning and 173.8 MB in the end (delta: -86.6 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.39 ms. Allocated memory is still 198.7 MB. Free memory was 173.8 MB in the beginning and 171.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 493.06 ms. Allocated memory is still 198.7 MB. Free memory was 171.9 MB in the beginning and 150.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1443.53 ms. Allocated memory was 198.7 MB in the beginning and 220.2 MB in the end (delta: 21.5 MB). Free memory was 149.6 MB in the beginning and 180.8 MB in the end (delta: -31.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 142 SDtfs, 58 SDslu, 144 SDs, 0 SdLazy, 64 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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, 0.94 AbsIntWeakeningRatio, 1.04 AbsIntAvgWeakeningVarsNumRemoved, 0.64 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 3828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...