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/simple_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:31:33,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:31:33,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:31:33,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:31:33,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:31:33,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:31:33,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:31:33,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:31:33,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:31:33,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:31:33,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:31:33,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:31:33,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:31:33,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:31:33,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:31:33,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:31:33,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:31:33,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:31:33,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:31:33,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:31:33,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:31:33,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:31:33,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:31:33,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:31:33,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-03 02:31:33,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:31:33,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:31:33,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:31:33,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:31:33,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:31:33,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:31:33,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:31:33,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:31:33,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:31:33,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:31:33,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:31:33,424 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 02:31:33,439 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:31:33,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:31:33,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:31:33,440 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:31:33,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:31:33,441 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:31:33,441 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:31:33,441 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:31:33,441 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:31:33,441 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:31:33,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:31:33,442 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:31:33,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:31:33,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:31:33,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:31:33,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:31:33,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:31:33,444 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:31:33,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:31:33,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:31:33,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:31:33,444 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:31:33,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:31:33,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:31:33,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:31:33,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:31:33,445 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:31:33,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:31:33,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:31:33,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:31:33,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:31:33,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:31:33,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:31:33,495 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:31:33,495 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:31:33,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2019-10-03 02:31:33,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe64e245/5e888536c303423aa4ef0b9bf6df8a42/FLAG9156f6fbe [2019-10-03 02:31:34,060 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:31:34,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-2.c [2019-10-03 02:31:34,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe64e245/5e888536c303423aa4ef0b9bf6df8a42/FLAG9156f6fbe [2019-10-03 02:31:34,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efe64e245/5e888536c303423aa4ef0b9bf6df8a42 [2019-10-03 02:31:34,429 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:31:34,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:31:34,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:31:34,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:31:34,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:31:34,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:31:34" (1/1) ... [2019-10-03 02:31:34,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eaec48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34, skipping insertion in model container [2019-10-03 02:31:34,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:31:34" (1/1) ... [2019-10-03 02:31:34,451 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:31:34,465 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:31:34,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:31:34,693 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:31:34,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:31:34,730 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:31:34,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34 WrapperNode [2019-10-03 02:31:34,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:31:34,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:31:34,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:31:34,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:31:34,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34" (1/1) ... [2019-10-03 02:31:34,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34" (1/1) ... [2019-10-03 02:31:34,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34" (1/1) ... [2019-10-03 02:31:34,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34" (1/1) ... [2019-10-03 02:31:34,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34" (1/1) ... [2019-10-03 02:31:34,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34" (1/1) ... [2019-10-03 02:31:34,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34" (1/1) ... [2019-10-03 02:31:34,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:31:34,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:31:34,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:31:34,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:31:34,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34" (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 02:31:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:31:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:31:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-03 02:31:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:31:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:31:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:31:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:31:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:31:34,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:31:35,104 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:31:35,104 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-03 02:31:35,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:31:35 BoogieIcfgContainer [2019-10-03 02:31:35,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:31:35,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:31:35,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:31:35,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:31:35,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:31:34" (1/3) ... [2019-10-03 02:31:35,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2c6b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:31:35, skipping insertion in model container [2019-10-03 02:31:35,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:31:34" (2/3) ... [2019-10-03 02:31:35,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2c6b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:31:35, skipping insertion in model container [2019-10-03 02:31:35,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:31:35" (3/3) ... [2019-10-03 02:31:35,114 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_4-2.c [2019-10-03 02:31:35,122 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:31:35,129 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:31:35,145 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:31:35,171 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:31:35,172 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:31:35,172 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:31:35,172 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:31:35,172 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:31:35,172 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:31:35,172 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:31:35,173 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:31:35,187 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-03 02:31:35,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-03 02:31:35,197 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:31:35,198 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:31:35,201 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:31:35,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:31:35,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2019-10-03 02:31:35,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:31:35,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:35,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:31:35,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:35,255 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:31:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:31:35,467 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 02:31:35,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:31:35,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:31:35,473 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:31:35,487 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:31:35,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:31:35,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:31:35,518 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2019-10-03 02:31:35,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:31:35,546 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-10-03 02:31:35,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:31:35,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-03 02:31:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:31:35,556 INFO L225 Difference]: With dead ends: 18 [2019-10-03 02:31:35,557 INFO L226 Difference]: Without dead ends: 12 [2019-10-03 02:31:35,558 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:31:35,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-03 02:31:35,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-03 02:31:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-03 02:31:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-03 02:31:35,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-03 02:31:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:31:35,597 INFO L475 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-03 02:31:35,597 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:31:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-03 02:31:35,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-03 02:31:35,598 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:31:35,598 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:31:35,599 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:31:35,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:31:35,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2019-10-03 02:31:35,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:31:35,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:35,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:31:35,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:35,602 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:31:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:31:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:31:35,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:31:35,709 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:31:35,710 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2019-10-03 02:31:35,712 INFO L207 CegarAbsIntRunner]: [0], [4], [11], [13], [19], [22], [24], [30], [31], [32], [34] [2019-10-03 02:31:35,741 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:31:35,742 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:31:35,799 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 02:31:36,255 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 02:31:36,259 INFO L272 AbstractInterpreter]: Visited 11 different actions 35 times. Merged at 2 different actions 8 times. Widened at 1 different actions 2 times. Performed 48 root evaluator evaluations with a maximum evaluation depth of 13. Performed 48 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2019-10-03 02:31:36,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:31:36,264 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-03 02:31:36,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:31:36,265 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-10-03 02:31:36,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:31:36,297 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-03 02:31:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:31:36,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-03 02:31:36,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 02:31:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:31:36,391 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 02:31:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:31:36,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-03 02:31:36,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2019-10-03 02:31:36,448 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-10-03 02:31:36,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:31:36,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:31:36,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:31:36,451 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-10-03 02:31:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:31:36,485 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-10-03 02:31:36,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:31:36,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-03 02:31:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:31:36,488 INFO L225 Difference]: With dead ends: 13 [2019-10-03 02:31:36,488 INFO L226 Difference]: Without dead ends: 13 [2019-10-03 02:31:36,490 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:31:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-03 02:31:36,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-03 02:31:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-03 02:31:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-03 02:31:36,496 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-03 02:31:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:31:36,497 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-03 02:31:36,498 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:31:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-03 02:31:36,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-03 02:31:36,499 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:31:36,499 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:31:36,500 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:31:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:31:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2019-10-03 02:31:36,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:31:36,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:36,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:31:36,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:31:36,508 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:31:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:31:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:31:36,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:31:36,659 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:31:36,659 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-03 02:31:36,659 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-03 02:31:36,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:31:36,660 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-03 02:31:36,696 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-10-03 02:31:36,696 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-10-03 02:31:36,709 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-03 02:31:36,709 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-03 02:31:36,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-03 02:31:36,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-03 02:31:36,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 02:31:36,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 02:31:36,731 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 02:31:36,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 02:31:36,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-03 02:31:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:31:36,774 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-03 02:31:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-03 02:31:36,844 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:31:36,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 11 [2019-10-03 02:31:36,845 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:31:36,845 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:31:36,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:31:36,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-03 02:31:36,846 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-10-03 02:31:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:31:36,873 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-10-03 02:31:36,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:31:36,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-10-03 02:31:36,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:31:36,874 INFO L225 Difference]: With dead ends: 11 [2019-10-03 02:31:36,874 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:31:36,874 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-10-03 02:31:36,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:31:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:31:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:31:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:31:36,876 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-03 02:31:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:31:36,876 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:31:36,876 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:31:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:31:36,876 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:31:36,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:31:36 BoogieIcfgContainer [2019-10-03 02:31:36,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:31:36,885 INFO L168 Benchmark]: Toolchain (without parser) took 2452.52 ms. Allocated memory was 134.7 MB in the beginning and 231.2 MB in the end (delta: 96.5 MB). Free memory was 90.5 MB in the beginning and 116.1 MB in the end (delta: -25.5 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:36,886 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 134.7 MB. Free memory was 109.0 MB in the beginning and 108.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:31:36,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.44 ms. Allocated memory is still 134.7 MB. Free memory was 90.3 MB in the beginning and 81.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:36,888 INFO L168 Benchmark]: Boogie Preprocessor took 152.30 ms. Allocated memory was 134.7 MB in the beginning and 203.4 MB in the end (delta: 68.7 MB). Free memory was 81.1 MB in the beginning and 180.0 MB in the end (delta: -99.0 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:36,889 INFO L168 Benchmark]: RCFGBuilder took 222.09 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 169.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:36,890 INFO L168 Benchmark]: TraceAbstraction took 1774.86 ms. Allocated memory was 203.4 MB in the beginning and 231.2 MB in the end (delta: 27.8 MB). Free memory was 168.7 MB in the beginning and 116.1 MB in the end (delta: 52.6 MB). Peak memory consumption was 80.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:31:36,894 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 134.7 MB. Free memory was 109.0 MB in the beginning and 108.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.44 ms. Allocated memory is still 134.7 MB. Free memory was 90.3 MB in the beginning and 81.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.30 ms. Allocated memory was 134.7 MB in the beginning and 203.4 MB in the end (delta: 68.7 MB). Free memory was 81.1 MB in the beginning and 180.0 MB in the end (delta: -99.0 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 222.09 ms. Allocated memory is still 203.4 MB. Free memory was 180.0 MB in the beginning and 169.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1774.86 ms. Allocated memory was 203.4 MB in the beginning and 231.2 MB in the end (delta: 27.8 MB). Free memory was 168.7 MB in the beginning and 116.1 MB in the end (delta: 52.6 MB). Peak memory consumption was 80.4 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, 17 locations, 1 error locations. SAFE Result, 1.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 34 SDtfs, 1 SDslu, 50 SDs, 0 SdLazy, 15 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 56 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 1594 SizeOfPredicates, 4 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...