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/loop-acceleration/array_4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:49:43,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:49:43,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:49:43,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:49:43,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:49:43,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:49:43,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:49:43,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:49:43,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:49:43,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:49:43,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:49:43,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:49:43,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:49:43,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:49:43,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:49:43,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:49:43,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:49:43,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:49:43,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:49:43,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:49:43,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:49:43,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:49:43,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:49:43,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:49:43,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:49:43,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:49:43,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:49:43,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:49:43,227 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 [2019-09-10 01:49:43,255 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:49:43,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:49:43,256 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:49:43,256 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:49:43,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:49:43,259 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:49:43,260 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:49:43,260 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:49:43,260 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:49:43,260 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:49:43,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:49:43,261 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:49:43,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:49:43,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:49:43,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:49:43,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:49:43,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:49:43,264 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:49:43,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:49:43,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:49:43,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:49:43,264 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:49:43,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:49:43,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:49:43,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:49:43,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:49:43,267 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:49:43,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:49:43,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:49:43,268 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:49:43,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:49:43,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:49:43,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:49:43,316 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:49:43,316 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:49:43,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_4.i [2019-09-10 01:49:43,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85765adc/86a4d4633c0c46ca98a7ea8132fe7bed/FLAGf4fc37cde [2019-09-10 01:49:43,821 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:49:43,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_4.i [2019-09-10 01:49:43,830 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85765adc/86a4d4633c0c46ca98a7ea8132fe7bed/FLAGf4fc37cde [2019-09-10 01:49:44,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b85765adc/86a4d4633c0c46ca98a7ea8132fe7bed [2019-09-10 01:49:44,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:49:44,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:49:44,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:44,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:49:44,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:49:44,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:44" (1/1) ... [2019-09-10 01:49:44,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f89b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44, skipping insertion in model container [2019-09-10 01:49:44,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:44" (1/1) ... [2019-09-10 01:49:44,193 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:49:44,208 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:49:44,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:44,380 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:49:44,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:44,416 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:49:44,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44 WrapperNode [2019-09-10 01:49:44,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:44,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:49:44,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:49:44,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:49:44,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44" (1/1) ... [2019-09-10 01:49:44,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44" (1/1) ... [2019-09-10 01:49:44,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44" (1/1) ... [2019-09-10 01:49:44,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44" (1/1) ... [2019-09-10 01:49:44,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44" (1/1) ... [2019-09-10 01:49:44,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44" (1/1) ... [2019-09-10 01:49:44,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44" (1/1) ... [2019-09-10 01:49:44,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:49:44,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:49:44,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:49:44,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:49:44,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44" (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 [2019-09-10 01:49:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:49:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:49:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:49:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:49:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:49:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:49:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:49:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:49:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:49:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:49:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:49:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:49:44,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:49:44,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:49:44,837 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:49:44,837 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-10 01:49:44,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:44 BoogieIcfgContainer [2019-09-10 01:49:44,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:49:44,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:49:44,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:49:44,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:49:44,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:49:44" (1/3) ... [2019-09-10 01:49:44,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e150141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:44, skipping insertion in model container [2019-09-10 01:49:44,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:44" (2/3) ... [2019-09-10 01:49:44,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e150141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:44, skipping insertion in model container [2019-09-10 01:49:44,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:44" (3/3) ... [2019-09-10 01:49:44,849 INFO L109 eAbstractionObserver]: Analyzing ICFG array_4.i [2019-09-10 01:49:44,862 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:49:44,876 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:49:44,899 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:49:44,931 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:49:44,931 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:49:44,932 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:49:44,932 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:49:44,932 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:49:44,932 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:49:44,932 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:49:44,932 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:49:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-10 01:49:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:49:44,961 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:44,962 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:44,968 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:44,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1816719235, now seen corresponding path program 1 times [2019-09-10 01:49:44,977 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:45,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:45,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:45,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:45,023 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:45,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:45,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:49:45,109 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:45,113 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:49:45,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:49:45,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:49:45,126 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-10 01:49:45,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:45,146 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-09-10 01:49:45,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:49:45,147 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-10 01:49:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:45,157 INFO L225 Difference]: With dead ends: 24 [2019-09-10 01:49:45,158 INFO L226 Difference]: Without dead ends: 17 [2019-09-10 01:49:45,159 INFO L628 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 [2019-09-10 01:49:45,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-10 01:49:45,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-10 01:49:45,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-10 01:49:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-09-10 01:49:45,202 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2019-09-10 01:49:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:45,202 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-09-10 01:49:45,203 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:49:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-09-10 01:49:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:49:45,204 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:45,204 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:45,204 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:45,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:45,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1663088498, now seen corresponding path program 1 times [2019-09-10 01:49:45,205 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:45,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:45,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:45,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:45,207 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:45,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:45,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:49:45,266 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:45,268 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:49:45,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:49:45,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:49:45,272 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2019-09-10 01:49:45,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:45,333 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-10 01:49:45,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:49:45,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-10 01:49:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:45,339 INFO L225 Difference]: With dead ends: 23 [2019-09-10 01:49:45,339 INFO L226 Difference]: Without dead ends: 23 [2019-09-10 01:49:45,341 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:49:45,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-10 01:49:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2019-09-10 01:49:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-10 01:49:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-10 01:49:45,349 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2019-09-10 01:49:45,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:45,350 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-10 01:49:45,350 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:49:45,350 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-10 01:49:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:49:45,352 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:45,352 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:45,353 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:45,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:45,354 INFO L82 PathProgramCache]: Analyzing trace with hash 845539860, now seen corresponding path program 1 times [2019-09-10 01:49:45,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:45,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:45,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:45,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:45,359 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 01:49:45,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:45,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:49:45,479 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:45,480 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:49:45,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:49:45,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:49:45,481 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2019-09-10 01:49:45,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:45,540 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-09-10 01:49:45,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:49:45,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-10 01:49:45,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:45,542 INFO L225 Difference]: With dead ends: 25 [2019-09-10 01:49:45,542 INFO L226 Difference]: Without dead ends: 22 [2019-09-10 01:49:45,543 INFO L628 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 [2019-09-10 01:49:45,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-10 01:49:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-09-10 01:49:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-10 01:49:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-09-10 01:49:45,547 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2019-09-10 01:49:45,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:45,548 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-09-10 01:49:45,548 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:49:45,548 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-09-10 01:49:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-10 01:49:45,549 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:45,549 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:45,549 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:45,550 INFO L82 PathProgramCache]: Analyzing trace with hash 221784433, now seen corresponding path program 1 times [2019-09-10 01:49:45,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:45,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:45,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:45,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:45,552 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 01:49:45,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:49:45,623 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:49:45,624 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-10 01:49:45,625 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [23], [26], [28], [30], [37], [40], [42], [48], [49], [50], [52] [2019-09-10 01:49:45,657 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:49:45,658 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:49:45,725 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:49:45,727 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 19 variables. [2019-09-10 01:49:45,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:45,730 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:49:45,768 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:49:45,769 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:49:45,770 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-10 01:49:45,771 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:49:45,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:49:45,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-10 01:49:45,772 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:45,772 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:49:45,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:49:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:49:45,773 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 2 states. [2019-09-10 01:49:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:45,774 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:49:45,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:49:45,775 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-10 01:49:45,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:45,775 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:49:45,775 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:49:45,776 INFO L628 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 [2019-09-10 01:49:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:49:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:49:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:49:45,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:49:45,777 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-10 01:49:45,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:45,777 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:49:45,777 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:49:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:49:45,778 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:49:45,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:49:45 BoogieIcfgContainer [2019-09-10 01:49:45,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:49:45,786 INFO L168 Benchmark]: Toolchain (without parser) took 1610.10 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 89.0 MB in the beginning and 110.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:45,787 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 132.6 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:49:45,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.73 ms. Allocated memory is still 132.6 MB. Free memory was 88.8 MB in the beginning and 78.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:45,789 INFO L168 Benchmark]: Boogie Preprocessor took 137.50 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 78.7 MB in the beginning and 175.1 MB in the end (delta: -96.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:45,790 INFO L168 Benchmark]: RCFGBuilder took 284.11 ms. Allocated memory is still 199.2 MB. Free memory was 175.1 MB in the beginning and 161.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:45,791 INFO L168 Benchmark]: TraceAbstraction took 942.76 ms. Allocated memory is still 199.2 MB. Free memory was 161.6 MB in the beginning and 110.8 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:45,795 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 132.6 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.73 ms. Allocated memory is still 132.6 MB. Free memory was 88.8 MB in the beginning and 78.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.50 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 78.7 MB in the beginning and 175.1 MB in the end (delta: -96.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 284.11 ms. Allocated memory is still 199.2 MB. Free memory was 175.1 MB in the beginning and 161.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 942.76 ms. Allocated memory is still 199.2 MB. Free memory was 161.6 MB in the beginning and 110.8 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 7 SDslu, 45 SDs, 0 SdLazy, 32 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9583333333333334 AbsIntWeakeningRatio, 0.6666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 0.3333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...