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-lit/ddlm2013_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 20:41:28,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 20:41:28,814 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 20:41:28,826 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 20:41:28,826 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 20:41:28,827 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 20:41:28,829 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 20:41:28,830 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 20:41:28,832 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 20:41:28,833 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 20:41:28,834 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 20:41:28,834 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 20:41:28,835 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 20:41:28,836 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 20:41:28,837 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 20:41:28,838 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 20:41:28,839 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 20:41:28,841 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 20:41:28,843 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 20:41:28,844 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 20:41:28,846 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 20:41:28,847 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 20:41:28,849 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 20:41:28,850 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 20:41:28,850 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 20:41:28,851 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 20:41:28,852 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 20:41:28,853 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 20:41:28,854 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 20:41:28,855 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 20:41:28,855 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 20:41:28,856 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 20:41:28,856 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 20:41:28,856 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 20:41:28,857 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 20:41:28,858 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 20:41:28,858 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 [2018-11-12 20:41:28,878 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 20:41:28,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 20:41:28,880 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 20:41:28,880 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 20:41:28,880 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 20:41:28,880 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 20:41:28,880 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 20:41:28,881 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 20:41:28,882 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 20:41:28,882 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 20:41:28,882 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 20:41:28,882 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 20:41:28,882 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 20:41:28,883 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 20:41:28,883 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 20:41:28,884 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 20:41:28,884 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 20:41:28,884 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 20:41:28,884 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 20:41:28,884 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 20:41:28,885 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 20:41:28,886 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 20:41:28,887 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 20:41:28,887 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 20:41:28,887 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 20:41:28,887 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:41:28,887 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 20:41:28,888 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 20:41:28,888 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 20:41:28,888 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 20:41:28,888 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 20:41:28,888 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 20:41:28,888 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 20:41:28,889 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 20:41:28,889 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 20:41:28,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 20:41:28,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 20:41:28,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 20:41:28,968 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 20:41:28,968 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 20:41:28,969 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013_true-unreach-call.i [2018-11-12 20:41:29,025 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f4a24dc8/377ecbd3ee6a4626b2d330d4182e19ae/FLAG19b16077b [2018-11-12 20:41:29,445 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 20:41:29,445 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013_true-unreach-call.i [2018-11-12 20:41:29,452 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f4a24dc8/377ecbd3ee6a4626b2d330d4182e19ae/FLAG19b16077b [2018-11-12 20:41:29,470 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f4a24dc8/377ecbd3ee6a4626b2d330d4182e19ae [2018-11-12 20:41:29,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 20:41:29,484 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 20:41:29,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 20:41:29,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 20:41:29,489 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 20:41:29,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a2cdb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29, skipping insertion in model container [2018-11-12 20:41:29,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 20:41:29,533 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 20:41:29,748 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:41:29,752 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 20:41:29,770 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:41:29,787 INFO L193 MainTranslator]: Completed translation [2018-11-12 20:41:29,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29 WrapperNode [2018-11-12 20:41:29,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 20:41:29,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 20:41:29,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 20:41:29,789 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 20:41:29,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 20:41:29,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 20:41:29,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 20:41:29,811 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 20:41:29,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (1/1) ... [2018-11-12 20:41:29,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 20:41:29,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 20:41:29,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 20:41:29,836 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 20:41:29,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (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 [2018-11-12 20:41:29,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 20:41:29,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 20:41:29,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 20:41:29,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 20:41:29,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 20:41:29,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 20:41:29,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-12 20:41:29,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-12 20:41:30,222 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 20:41:30,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:30 BoogieIcfgContainer [2018-11-12 20:41:30,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 20:41:30,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 20:41:30,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 20:41:30,227 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 20:41:30,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:41:29" (1/3) ... [2018-11-12 20:41:30,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432d49a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:30, skipping insertion in model container [2018-11-12 20:41:30,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:41:29" (2/3) ... [2018-11-12 20:41:30,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432d49a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:41:30, skipping insertion in model container [2018-11-12 20:41:30,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:41:30" (3/3) ... [2018-11-12 20:41:30,231 INFO L112 eAbstractionObserver]: Analyzing ICFG ddlm2013_true-unreach-call.i [2018-11-12 20:41:30,240 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 20:41:30,248 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 20:41:30,261 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 20:41:30,295 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 20:41:30,295 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 20:41:30,295 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 20:41:30,296 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 20:41:30,296 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 20:41:30,296 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 20:41:30,296 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 20:41:30,296 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 20:41:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-12 20:41:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-12 20:41:30,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:30,324 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:30,327 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:30,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:30,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2066841578, now seen corresponding path program 1 times [2018-11-12 20:41:30,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:30,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:30,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:30,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:30,382 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:30,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:41:30,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-12 20:41:30,445 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:30,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-12 20:41:30,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-12 20:41:30,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-12 20:41:30,469 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-11-12 20:41:30,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:30,492 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-11-12 20:41:30,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-12 20:41:30,493 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-12 20:41:30,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:30,502 INFO L225 Difference]: With dead ends: 36 [2018-11-12 20:41:30,503 INFO L226 Difference]: Without dead ends: 16 [2018-11-12 20:41:30,506 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 [2018-11-12 20:41:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-12 20:41:30,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-12 20:41:30,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-12 20:41:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-11-12 20:41:30,547 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2018-11-12 20:41:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:30,547 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-11-12 20:41:30,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-12 20:41:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-12 20:41:30,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-12 20:41:30,549 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:30,549 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:30,549 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:30,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:30,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1651906282, now seen corresponding path program 1 times [2018-11-12 20:41:30,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:30,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:30,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:30,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:30,552 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:30,799 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-11-12 20:41:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:30,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:41:30,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 20:41:30,957 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:30,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 20:41:30,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 20:41:30,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 20:41:30,960 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2018-11-12 20:41:31,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:31,034 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-11-12 20:41:31,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-12 20:41:31,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-12 20:41:31,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:31,036 INFO L225 Difference]: With dead ends: 25 [2018-11-12 20:41:31,036 INFO L226 Difference]: Without dead ends: 19 [2018-11-12 20:41:31,037 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 20:41:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-12 20:41:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-12 20:41:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-12 20:41:31,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-12 20:41:31,044 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 14 [2018-11-12 20:41:31,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:31,045 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-12 20:41:31,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 20:41:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-12 20:41:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-12 20:41:31,046 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:31,046 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:31,047 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:31,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:31,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1973708347, now seen corresponding path program 1 times [2018-11-12 20:41:31,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:31,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:31,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:31,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:31,049 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:31,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:31,515 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:41:31,522 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-11-12 20:41:31,524 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [13], [15], [18], [20], [23], [32], [39], [42], [44], [50], [51], [52], [54] [2018-11-12 20:41:31,570 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:41:31,571 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:41:31,749 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 20:41:32,042 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:41:32,043 INFO L272 AbstractInterpreter]: Visited 16 different actions 84 times. Merged at 6 different actions 42 times. Widened at 1 different actions 3 times. Performed 328 root evaluator evaluations with a maximum evaluation depth of 6. Performed 328 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-11-12 20:41:32,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:32,061 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:41:32,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:32,062 INFO L192 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 [2018-11-12 20:41:32,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:32,072 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:41:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:32,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:41:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:32,282 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:41:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:32,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:41:32,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2018-11-12 20:41:32,557 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:41:32,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 20:41:32,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 20:41:32,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-11-12 20:41:32,560 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 12 states. [2018-11-12 20:41:32,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:32,690 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-11-12 20:41:32,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 20:41:32,691 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2018-11-12 20:41:32,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:32,693 INFO L225 Difference]: With dead ends: 32 [2018-11-12 20:41:32,693 INFO L226 Difference]: Without dead ends: 26 [2018-11-12 20:41:32,694 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-11-12 20:41:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-12 20:41:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2018-11-12 20:41:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-12 20:41:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2018-11-12 20:41:32,707 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2018-11-12 20:41:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:32,707 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2018-11-12 20:41:32,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 20:41:32,708 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2018-11-12 20:41:32,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-12 20:41:32,709 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:32,710 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:32,711 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:32,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:32,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1386902333, now seen corresponding path program 1 times [2018-11-12 20:41:32,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:32,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:32,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:32,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:32,713 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-12 20:41:32,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:41:32,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 20:41:32,781 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:32,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 20:41:32,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 20:41:32,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 20:41:32,783 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2018-11-12 20:41:32,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:32,795 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-12 20:41:32,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 20:41:32,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-12 20:41:32,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:32,797 INFO L225 Difference]: With dead ends: 36 [2018-11-12 20:41:32,797 INFO L226 Difference]: Without dead ends: 23 [2018-11-12 20:41:32,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 20:41:32,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-12 20:41:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-12 20:41:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-12 20:41:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-12 20:41:32,806 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2018-11-12 20:41:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:32,807 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-12 20:41:32,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 20:41:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-12 20:41:32,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-12 20:41:32,810 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:32,811 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:32,811 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:32,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:32,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1807628064, now seen corresponding path program 2 times [2018-11-12 20:41:32,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:32,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:32,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:32,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:32,813 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:33,160 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-11-12 20:41:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:33,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:33,547 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:41:33,547 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:41:33,547 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:41:33,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:33,547 INFO L192 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 [2018-11-12 20:41:33,559 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 20:41:33,559 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 20:41:33,615 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-12 20:41:33,615 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:41:33,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:41:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:34,063 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:41:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:41:34,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:41:34,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2018-11-12 20:41:34,381 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:41:34,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 20:41:34,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 20:41:34,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-11-12 20:41:34,382 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 16 states. [2018-11-12 20:41:34,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:34,689 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-11-12 20:41:34,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 20:41:34,691 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2018-11-12 20:41:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:34,693 INFO L225 Difference]: With dead ends: 60 [2018-11-12 20:41:34,693 INFO L226 Difference]: Without dead ends: 37 [2018-11-12 20:41:34,694 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2018-11-12 20:41:34,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-12 20:41:34,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2018-11-12 20:41:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-12 20:41:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-12 20:41:34,699 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2018-11-12 20:41:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:34,700 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-12 20:41:34,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 20:41:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-12 20:41:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-12 20:41:34,701 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:41:34,701 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:41:34,701 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:41:34,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:34,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1736007175, now seen corresponding path program 1 times [2018-11-12 20:41:34,702 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:41:34,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:34,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 20:41:34,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:41:34,703 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:41:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-12 20:41:34,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:34,854 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:41:34,854 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-11-12 20:41:34,854 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [13], [15], [18], [20], [23], [25], [32], [39], [42], [44], [50], [51], [52], [54] [2018-11-12 20:41:34,856 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:41:34,856 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:41:34,891 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 20:41:35,099 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:41:35,099 INFO L272 AbstractInterpreter]: Visited 17 different actions 92 times. Merged at 6 different actions 42 times. Widened at 1 different actions 3 times. Performed 345 root evaluator evaluations with a maximum evaluation depth of 6. Performed 345 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 9 variables. [2018-11-12 20:41:35,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:41:35,138 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:41:35,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:41:35,139 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 20:41:35,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:41:35,153 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:41:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:41:35,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:41:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-12 20:41:35,281 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:41:35,537 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 5 [2018-11-12 20:41:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 20:41:35,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 20:41:35,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 6 [2018-11-12 20:41:35,634 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:41:35,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 20:41:35,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 20:41:35,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 20:41:35,636 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 3 states. [2018-11-12 20:41:35,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:41:35,679 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2018-11-12 20:41:35,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 20:41:35,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-11-12 20:41:35,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:41:35,681 INFO L225 Difference]: With dead ends: 27 [2018-11-12 20:41:35,681 INFO L226 Difference]: Without dead ends: 0 [2018-11-12 20:41:35,682 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 20:41:35,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-12 20:41:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-12 20:41:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-12 20:41:35,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-12 20:41:35,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-11-12 20:41:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:41:35,684 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-12 20:41:35,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 20:41:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-12 20:41:35,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-12 20:41:35,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-12 20:41:35,895 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 5 [2018-11-12 20:41:35,898 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-12 20:41:35,898 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:41:35,898 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:41:35,898 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-12 20:41:35,898 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-12 20:41:35,898 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-12 20:41:35,898 INFO L425 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2018-11-12 20:41:35,898 INFO L425 ceAbstractionStarter]: For program point L25(lines 25 29) no Hoare annotation was computed. [2018-11-12 20:41:35,899 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 35) no Hoare annotation was computed. [2018-11-12 20:41:35,899 INFO L425 ceAbstractionStarter]: For program point L25-2(lines 10 35) no Hoare annotation was computed. [2018-11-12 20:41:35,899 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 30) no Hoare annotation was computed. [2018-11-12 20:41:35,899 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 30) no Hoare annotation was computed. [2018-11-12 20:41:35,899 INFO L425 ceAbstractionStarter]: For program point L21-3(lines 10 35) no Hoare annotation was computed. [2018-11-12 20:41:35,899 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 35) no Hoare annotation was computed. [2018-11-12 20:41:35,900 INFO L421 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: (and (<= main_~a~0 main_~b~0) (<= main_~b~0 main_~a~0)) [2018-11-12 20:41:35,900 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 35) the Hoare annotation is: true [2018-11-12 20:41:35,900 INFO L425 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2018-11-12 20:41:35,900 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-12 20:41:35,900 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:41:35,900 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-12 20:41:35,901 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-12 20:41:35,901 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-12 20:41:35,901 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:41:35,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:41:35 BoogieIcfgContainer [2018-11-12 20:41:35,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 20:41:35,905 INFO L168 Benchmark]: Toolchain (without parser) took 6422.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -515.5 MB). Peak memory consumption was 244.7 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:35,906 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-11-12 20:41:35,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.76 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. [2018-11-12 20:41:35,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.14 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. [2018-11-12 20:41:35,908 INFO L168 Benchmark]: Boogie Preprocessor took 23.95 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. [2018-11-12 20:41:35,909 INFO L168 Benchmark]: RCFGBuilder took 388.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:35,910 INFO L168 Benchmark]: TraceAbstraction took 5680.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 274.9 MB). Peak memory consumption was 274.9 MB. Max. memory is 7.1 GB. [2018-11-12 20:41:35,915 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 302.76 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 22.14 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 23.95 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 388.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5680.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 274.9 MB). Peak memory consumption was 274.9 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, 23 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 108 SDtfs, 30 SDslu, 259 SDs, 0 SdLazy, 114 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 15 PreInvPairs, 20 NumberOfFragments, 12 HoareAnnotationTreeSize, 15 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 23139 SizeOfPredicates, 7 NumberOfNonLiveVariables, 197 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 58/105 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...