java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/loop-invariants/even_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 10:45:12,260 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 10:45:12,263 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 10:45:12,276 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 10:45:12,277 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 10:45:12,278 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 10:45:12,279 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 10:45:12,281 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 10:45:12,283 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 10:45:12,284 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 10:45:12,285 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 10:45:12,286 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 10:45:12,287 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 10:45:12,288 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 10:45:12,289 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 10:45:12,290 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 10:45:12,291 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 10:45:12,293 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 10:45:12,295 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 10:45:12,297 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 10:45:12,298 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 10:45:12,299 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 10:45:12,303 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 10:45:12,303 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 10:45:12,303 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 10:45:12,305 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 10:45:12,307 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 10:45:12,308 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 10:45:12,309 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 10:45:12,313 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 10:45:12,314 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 10:45:12,314 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 10:45:12,319 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 10:45:12,348 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 10:45:12,348 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 10:45:12,352 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 10:45:12,352 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 10:45:12,352 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 10:45:12,353 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 10:45:12,353 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 10:45:12,353 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 10:45:12,353 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 10:45:12,353 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 10:45:12,354 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 10:45:12,355 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 10:45:12,355 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 10:45:12,355 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 10:45:12,356 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 10:45:12,356 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 10:45:12,356 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 10:45:12,357 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 10:45:12,357 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 10:45:12,357 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 10:45:12,357 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 10:45:12,357 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 10:45:12,358 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 10:45:12,358 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 10:45:12,358 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 10:45:12,358 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 10:45:12,358 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 10:45:12,358 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 10:45:12,361 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 10:45:12,361 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 10:45:12,361 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 10:45:12,361 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 10:45:12,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 10:45:12,362 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 10:45:12,362 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 10:45:12,362 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 10:45:12,429 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 10:45:12,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 10:45:12,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 10:45:12,450 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 10:45:12,451 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 10:45:12,452 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/even_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 10:45:12,515 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14929abcf/e956f9b4c51649bb942b1cb0fbb57f12/FLAG3d36a0d31 [2018-11-07 10:45:13,065 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 10:45:13,066 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 10:45:13,074 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14929abcf/e956f9b4c51649bb942b1cb0fbb57f12/FLAG3d36a0d31 [2018-11-07 10:45:13,091 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14929abcf/e956f9b4c51649bb942b1cb0fbb57f12 [2018-11-07 10:45:13,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 10:45:13,105 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 10:45:13,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 10:45:13,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 10:45:13,111 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 10:45:13,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c028a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13, skipping insertion in model container [2018-11-07 10:45:13,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 10:45:13,162 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 10:45:13,392 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:45:13,397 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 10:45:13,415 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:45:13,433 INFO L193 MainTranslator]: Completed translation [2018-11-07 10:45:13,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13 WrapperNode [2018-11-07 10:45:13,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 10:45:13,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 10:45:13,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 10:45:13,436 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 10:45:13,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 10:45:13,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 10:45:13,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 10:45:13,463 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 10:45:13,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (1/1) ... [2018-11-07 10:45:13,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 10:45:13,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 10:45:13,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 10:45:13,485 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 10:45:13,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (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 [2018-11-07 10:45:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 10:45:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 10:45:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 10:45:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 10:45:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 10:45:13,625 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 10:45:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 10:45:13,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 10:45:13,829 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 10:45:13,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:45:13 BoogieIcfgContainer [2018-11-07 10:45:13,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 10:45:13,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 10:45:13,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 10:45:13,835 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 10:45:13,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:45:13" (1/3) ... [2018-11-07 10:45:13,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445468b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:45:13, skipping insertion in model container [2018-11-07 10:45:13,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:13" (2/3) ... [2018-11-07 10:45:13,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@445468b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:45:13, skipping insertion in model container [2018-11-07 10:45:13,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:45:13" (3/3) ... [2018-11-07 10:45:13,840 INFO L112 eAbstractionObserver]: Analyzing ICFG even_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 10:45:13,849 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 10:45:13,857 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 10:45:13,872 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 10:45:13,914 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 10:45:13,914 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 10:45:13,915 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 10:45:13,915 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 10:45:13,915 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 10:45:13,915 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 10:45:13,916 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 10:45:13,916 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 10:45:13,944 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-07 10:45:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-07 10:45:13,951 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:45:13,952 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:45:13,955 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:45:13,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:45:13,963 INFO L82 PathProgramCache]: Analyzing trace with hash 563245249, now seen corresponding path program 1 times [2018-11-07 10:45:13,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:45:14,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:14,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:45:14,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:14,020 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:45:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:45:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:45:14,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:45:14,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 10:45:14,079 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:45:14,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 10:45:14,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 10:45:14,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 10:45:14,100 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-07 10:45:14,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:45:14,124 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-11-07 10:45:14,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 10:45:14,126 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-07 10:45:14,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:45:14,136 INFO L225 Difference]: With dead ends: 32 [2018-11-07 10:45:14,136 INFO L226 Difference]: Without dead ends: 13 [2018-11-07 10:45:14,140 INFO L604 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 [2018-11-07 10:45:14,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-07 10:45:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-07 10:45:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-07 10:45:14,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-07 10:45:14,184 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-07 10:45:14,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:45:14,185 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-07 10:45:14,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 10:45:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-07 10:45:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-07 10:45:14,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:45:14,186 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:45:14,187 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:45:14,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:45:14,187 INFO L82 PathProgramCache]: Analyzing trace with hash -65738821, now seen corresponding path program 1 times [2018-11-07 10:45:14,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:45:14,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:14,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:45:14,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:14,190 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:45:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:45:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:45:14,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:45:14,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 10:45:14,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:45:14,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 10:45:14,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 10:45:14,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 10:45:14,465 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2018-11-07 10:45:14,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:45:14,586 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-07 10:45:14,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 10:45:14,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-07 10:45:14,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:45:14,588 INFO L225 Difference]: With dead ends: 21 [2018-11-07 10:45:14,589 INFO L226 Difference]: Without dead ends: 16 [2018-11-07 10:45:14,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 10:45:14,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-07 10:45:14,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-07 10:45:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-07 10:45:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-07 10:45:14,596 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-11-07 10:45:14,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:45:14,597 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-07 10:45:14,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 10:45:14,597 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-07 10:45:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 10:45:14,598 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:45:14,598 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:45:14,598 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:45:14,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:45:14,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1051591244, now seen corresponding path program 1 times [2018-11-07 10:45:14,599 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:45:14,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:14,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:45:14,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:14,600 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:45:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:45:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:45:14,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:45:14,791 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:45:14,793 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-07 10:45:14,795 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [10], [13], [15], [22], [25], [27], [33], [34], [35], [37] [2018-11-07 10:45:14,837 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 10:45:14,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:45:15,281 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 10:45:15,284 INFO L272 AbstractInterpreter]: Visited 12 different actions 26 times. Merged at 4 different actions 8 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-07 10:45:15,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:45:15,337 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 10:45:15,411 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-11-07 10:45:15,411 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 10:45:15,574 INFO L415 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2018-11-07 10:45:15,574 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 10:45:15,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 10:45:15,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2018-11-07 10:45:15,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:45:15,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 10:45:15,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 10:45:15,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 10:45:15,581 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-11-07 10:45:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:45:15,735 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-07 10:45:15,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 10:45:15,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-07 10:45:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:45:15,737 INFO L225 Difference]: With dead ends: 16 [2018-11-07 10:45:15,737 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 10:45:15,738 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 10:45:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 10:45:15,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 10:45:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 10:45:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 10:45:15,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-11-07 10:45:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:45:15,741 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 10:45:15,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 10:45:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 10:45:15,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 10:45:15,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 10:45:15,912 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 10:45:15,957 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-07 10:45:15,957 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 10:45:15,957 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 10:45:15,958 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 10:45:15,958 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 10:45:15,958 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 10:45:15,958 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2018-11-07 10:45:15,958 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2018-11-07 10:45:15,958 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-07 10:45:15,959 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2018-11-07 10:45:15,959 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-07 10:45:15,959 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-11-07 10:45:15,959 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-11-07 10:45:15,959 INFO L421 ceAbstractionStarter]: At program point L11-5(lines 11 13) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-11-07 10:45:15,960 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-07 10:45:15,960 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-07 10:45:15,960 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-07 10:45:15,960 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-07 10:45:15,961 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-07 10:45:15,961 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-07 10:45:15,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:45:15 BoogieIcfgContainer [2018-11-07 10:45:15,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 10:45:15,973 INFO L168 Benchmark]: Toolchain (without parser) took 2868.98 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -659.1 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 10:45:15,974 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 10:45:15,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-07 10:45:15,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 10:45:15,977 INFO L168 Benchmark]: Boogie Preprocessor took 21.93 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 10:45:15,978 INFO L168 Benchmark]: RCFGBuilder took 345.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-07 10:45:15,979 INFO L168 Benchmark]: TraceAbstraction took 2140.40 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 99.2 MB). Peak memory consumption was 99.2 MB. Max. memory is 7.1 GB. [2018-11-07 10:45:15,989 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 328.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 26.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.93 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 345.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.9 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2140.40 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 99.2 MB). Peak memory consumption was 99.2 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 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 2 SDslu, 52 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 1 AbstIntStrong, 0.8571428571428571 AbsIntWeakeningRatio, 0.21428571428571427 AbsIntAvgWeakeningVarsNumRemoved, 0.07142857142857142 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 13 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...