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-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 22:19:54,808 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 22:19:54,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 22:19:54,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 22:19:54,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 22:19:54,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 22:19:54,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 22:19:54,826 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 22:19:54,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 22:19:54,828 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 22:19:54,829 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 22:19:54,830 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 22:19:54,830 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 22:19:54,831 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 22:19:54,833 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 22:19:54,833 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 22:19:54,834 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 22:19:54,836 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 22:19:54,838 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 22:19:54,840 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 22:19:54,841 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 22:19:54,842 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 22:19:54,844 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 22:19:54,853 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 22:19:54,880 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 22:19:54,883 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 22:19:54,884 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 22:19:54,884 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 22:19:54,884 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 22:19:54,885 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 22:19:54,885 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 22:19:54,885 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 22:19:54,885 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 22:19:54,885 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 22:19:54,886 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 22:19:54,886 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 22:19:54,886 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 22:19:54,887 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 22:19:54,887 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 22:19:54,887 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 22:19:54,888 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 22:19:54,888 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 22:19:54,888 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 22:19:54,888 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 22:19:54,888 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 22:19:54,889 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 22:19:54,890 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 22:19:54,890 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 22:19:54,890 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 22:19:54,890 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 22:19:54,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 22:19:54,891 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 22:19:54,891 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 22:19:54,891 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 22:19:54,891 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 22:19:54,891 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 22:19:54,892 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 22:19:54,892 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 22:19:54,892 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 22:19:54,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 22:19:54,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 22:19:54,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 22:19:54,960 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 22:19:54,961 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 22:19:54,961 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 22:19:55,029 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5aefdda/e2f50f68423a4dee8088c2b3d78b99b1/FLAG03e158aa7 [2018-11-07 22:19:55,540 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 22:19:55,541 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 22:19:55,549 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5aefdda/e2f50f68423a4dee8088c2b3d78b99b1/FLAG03e158aa7 [2018-11-07 22:19:55,569 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d5aefdda/e2f50f68423a4dee8088c2b3d78b99b1 [2018-11-07 22:19:55,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 22:19:55,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 22:19:55,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 22:19:55,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 22:19:55,591 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 22:19:55,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df3ea29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55, skipping insertion in model container [2018-11-07 22:19:55,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 22:19:55,630 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 22:19:55,825 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:19:55,829 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 22:19:55,846 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:19:55,865 INFO L193 MainTranslator]: Completed translation [2018-11-07 22:19:55,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55 WrapperNode [2018-11-07 22:19:55,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 22:19:55,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 22:19:55,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 22:19:55,867 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 22:19:55,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 22:19:55,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 22:19:55,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 22:19:55,897 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 22:19:55,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (1/1) ... [2018-11-07 22:19:55,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 22:19:55,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 22:19:55,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 22:19:55,922 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 22:19:55,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (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 22:19:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 22:19:56,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 22:19:56,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 22:19:56,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 22:19:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 22:19:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 22:19:56,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 22:19:56,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 22:19:56,322 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 22:19:56,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:19:56 BoogieIcfgContainer [2018-11-07 22:19:56,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 22:19:56,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 22:19:56,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 22:19:56,328 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 22:19:56,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:19:55" (1/3) ... [2018-11-07 22:19:56,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9f524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:19:56, skipping insertion in model container [2018-11-07 22:19:56,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:19:55" (2/3) ... [2018-11-07 22:19:56,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9f524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:19:56, skipping insertion in model container [2018-11-07 22:19:56,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:19:56" (3/3) ... [2018-11-07 22:19:56,331 INFO L112 eAbstractionObserver]: Analyzing ICFG mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 22:19:56,340 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 22:19:56,348 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 22:19:56,364 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 22:19:56,397 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 22:19:56,397 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 22:19:56,398 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 22:19:56,398 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 22:19:56,398 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 22:19:56,398 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 22:19:56,398 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 22:19:56,399 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 22:19:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-07 22:19:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-07 22:19:56,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:19:56,424 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:19:56,426 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:19:56,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:19:56,433 INFO L82 PathProgramCache]: Analyzing trace with hash 563245249, now seen corresponding path program 1 times [2018-11-07 22:19:56,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:19:56,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:56,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:19:56,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:56,491 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:19:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:19:56,549 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 22:19:56,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:19:56,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 22:19:56,552 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:19:56,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 22:19:56,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 22:19:56,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 22:19:56,571 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-07 22:19:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:19:56,594 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-11-07 22:19:56,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 22:19:56,595 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-07 22:19:56,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:19:56,604 INFO L225 Difference]: With dead ends: 32 [2018-11-07 22:19:56,604 INFO L226 Difference]: Without dead ends: 13 [2018-11-07 22:19:56,608 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 22:19:56,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-07 22:19:56,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-07 22:19:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-07 22:19:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-07 22:19:56,648 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-07 22:19:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:19:56,648 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-07 22:19:56,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 22:19:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-07 22:19:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-07 22:19:56,650 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:19:56,650 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:19:56,651 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:19:56,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:19:56,651 INFO L82 PathProgramCache]: Analyzing trace with hash -65738821, now seen corresponding path program 1 times [2018-11-07 22:19:56,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:19:56,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:56,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:19:56,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:56,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:19:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:19:56,930 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 22:19:56,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:19:56,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 22:19:56,930 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:19:56,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 22:19:56,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 22:19:56,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 22:19:56,933 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2018-11-07 22:19:57,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:19:57,012 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-07 22:19:57,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 22:19:57,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-07 22:19:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:19:57,014 INFO L225 Difference]: With dead ends: 21 [2018-11-07 22:19:57,014 INFO L226 Difference]: Without dead ends: 16 [2018-11-07 22:19:57,015 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 22:19:57,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-07 22:19:57,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-07 22:19:57,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-07 22:19:57,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-07 22:19:57,020 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-11-07 22:19:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:19:57,021 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-07 22:19:57,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 22:19:57,021 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-07 22:19:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 22:19:57,022 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:19:57,022 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:19:57,022 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:19:57,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:19:57,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1051591244, now seen corresponding path program 1 times [2018-11-07 22:19:57,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:19:57,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:57,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:19:57,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:19:57,025 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:19:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:19:57,192 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 22:19:57,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:19:57,193 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 22:19:57,196 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-07 22:19:57,198 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [10], [13], [15], [22], [25], [27], [33], [34], [35], [37] [2018-11-07 22:19:57,231 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 22:19:57,232 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 22:19:57,351 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 22:19:57,542 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 22:19:57,546 INFO L272 AbstractInterpreter]: Visited 13 different actions 69 times. Merged at 4 different actions 28 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-07 22:19:57,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:19:57,575 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 22:19:57,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:19:57,575 INFO L194 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 22:19:57,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:19:57,587 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 22:19:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:19:57,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 22:19:57,715 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 22:19:57,715 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 22:19:58,080 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 5 [2018-11-07 22:19:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-07 22:19:58,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 22:19:58,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 9 [2018-11-07 22:19:58,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:19:58,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 22:19:58,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 22:19:58,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 22:19:58,132 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-11-07 22:19:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:19:58,173 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-07 22:19:58,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 22:19:58,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-07 22:19:58,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:19:58,174 INFO L225 Difference]: With dead ends: 16 [2018-11-07 22:19:58,174 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 22:19:58,175 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 22:19:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 22:19:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 22:19:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 22:19:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 22:19:58,176 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-11-07 22:19:58,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:19:58,177 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 22:19:58,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 22:19:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 22:19:58,177 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 22:19:58,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 22:19:58,261 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-07 22:19:58,262 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:19:58,262 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:19:58,262 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 22:19:58,262 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 22:19:58,262 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 22:19:58,263 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2018-11-07 22:19:58,263 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2018-11-07 22:19:58,263 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-07 22:19:58,263 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2018-11-07 22:19:58,263 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-07 22:19:58,263 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-11-07 22:19:58,263 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (= 0 (mod main_~x~0 4)) [2018-11-07 22:19:58,264 INFO L421 ceAbstractionStarter]: At program point L11-5(lines 11 13) the Hoare annotation is: (= 0 (mod main_~x~0 4)) [2018-11-07 22:19:58,264 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-07 22:19:58,264 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-07 22:19:58,264 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-07 22:19:58,265 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-07 22:19:58,265 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-07 22:19:58,265 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-07 22:19:58,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:19:58 BoogieIcfgContainer [2018-11-07 22:19:58,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 22:19:58,275 INFO L168 Benchmark]: Toolchain (without parser) took 2693.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -722.9 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2018-11-07 22:19:58,277 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 22:19:58,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.75 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 22:19:58,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.04 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 22:19:58,279 INFO L168 Benchmark]: Boogie Preprocessor took 24.22 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 22:19:58,280 INFO L168 Benchmark]: RCFGBuilder took 401.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-07 22:19:58,281 INFO L168 Benchmark]: TraceAbstraction took 1950.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 85.5 MB). Peak memory consumption was 85.5 MB. Max. memory is 7.1 GB. [2018-11-07 22:19:58,286 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.75 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 30.04 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 24.22 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 401.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -819.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1950.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 85.5 MB). Peak memory consumption was 85.5 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: 0 == x % 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 2 SDslu, 52 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s 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, 0.3s 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: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 13 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 2862 SizeOfPredicates, 2 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...