java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/loop-new/nested_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 12:38:13,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 12:38:13,184 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 12:38:13,196 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 12:38:13,196 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 12:38:13,198 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 12:38:13,199 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 12:38:13,201 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 12:38:13,203 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 12:38:13,204 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 12:38:13,205 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 12:38:13,205 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 12:38:13,206 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 12:38:13,207 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 12:38:13,208 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 12:38:13,209 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 12:38:13,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 12:38:13,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 12:38:13,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 12:38:13,215 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 12:38:13,216 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 12:38:13,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 12:38:13,220 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 12:38:13,220 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 12:38:13,221 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 12:38:13,222 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 12:38:13,223 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 12:38:13,223 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 12:38:13,224 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 12:38:13,226 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 12:38:13,226 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 12:38:13,227 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 12:38:13,227 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 12:38:13,227 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 12:38:13,228 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 12:38:13,229 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 12:38:13,229 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 12:38:13,244 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 12:38:13,245 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 12:38:13,246 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 12:38:13,246 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 12:38:13,246 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 12:38:13,246 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 12:38:13,246 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 12:38:13,247 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 12:38:13,247 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 12:38:13,247 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 12:38:13,247 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 12:38:13,247 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 12:38:13,247 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 12:38:13,248 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 12:38:13,248 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 12:38:13,249 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 12:38:13,249 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 12:38:13,249 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 12:38:13,249 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 12:38:13,249 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 12:38:13,250 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 12:38:13,251 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 12:38:13,251 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 12:38:13,251 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 12:38:13,251 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 12:38:13,251 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 12:38:13,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 12:38:13,252 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 12:38:13,252 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 12:38:13,252 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 12:38:13,252 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 12:38:13,253 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 12:38:13,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 12:38:13,253 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 12:38:13,253 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 12:38:13,254 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 12:38:13,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 12:38:13,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 12:38:13,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 12:38:13,326 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 12:38:13,326 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 12:38:13,327 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-new/nested_true-unreach-call_true-termination.i [2018-10-24 12:38:13,397 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/04efc34b8/ff858c35e2bf43c6a23ef0a019bb80b0/FLAGc063a68fc [2018-10-24 12:38:13,875 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 12:38:13,875 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/nested_true-unreach-call_true-termination.i [2018-10-24 12:38:13,884 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/04efc34b8/ff858c35e2bf43c6a23ef0a019bb80b0/FLAGc063a68fc [2018-10-24 12:38:13,907 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/04efc34b8/ff858c35e2bf43c6a23ef0a019bb80b0 [2018-10-24 12:38:13,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 12:38:13,922 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 12:38:13,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 12:38:13,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 12:38:13,933 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 12:38:13,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:38:13" (1/1) ... [2018-10-24 12:38:13,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d25e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:13, skipping insertion in model container [2018-10-24 12:38:13,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:38:13" (1/1) ... [2018-10-24 12:38:13,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 12:38:13,979 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 12:38:14,161 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:38:14,167 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 12:38:14,190 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 12:38:14,211 INFO L193 MainTranslator]: Completed translation [2018-10-24 12:38:14,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14 WrapperNode [2018-10-24 12:38:14,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 12:38:14,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 12:38:14,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 12:38:14,212 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 12:38:14,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... [2018-10-24 12:38:14,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... [2018-10-24 12:38:14,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 12:38:14,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 12:38:14,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 12:38:14,230 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 12:38:14,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... [2018-10-24 12:38:14,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... [2018-10-24 12:38:14,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... [2018-10-24 12:38:14,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... [2018-10-24 12:38:14,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... [2018-10-24 12:38:14,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... [2018-10-24 12:38:14,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... [2018-10-24 12:38:14,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 12:38:14,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 12:38:14,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 12:38:14,254 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 12:38:14,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:38:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 12:38:14,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 12:38:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 12:38:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 12:38:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 12:38:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 12:38:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-24 12:38:14,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-24 12:38:14,709 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 12:38:14,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:38:14 BoogieIcfgContainer [2018-10-24 12:38:14,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 12:38:14,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 12:38:14,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 12:38:14,716 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 12:38:14,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:38:13" (1/3) ... [2018-10-24 12:38:14,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631b869a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:38:14, skipping insertion in model container [2018-10-24 12:38:14,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:38:14" (2/3) ... [2018-10-24 12:38:14,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@631b869a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:38:14, skipping insertion in model container [2018-10-24 12:38:14,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:38:14" (3/3) ... [2018-10-24 12:38:14,726 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call_true-termination.i [2018-10-24 12:38:14,736 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 12:38:14,744 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 12:38:14,762 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 12:38:14,796 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 12:38:14,796 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 12:38:14,796 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 12:38:14,796 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 12:38:14,797 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 12:38:14,797 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 12:38:14,797 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 12:38:14,797 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 12:38:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-10-24 12:38:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-24 12:38:14,825 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:14,828 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:14,832 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:14,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:14,839 INFO L82 PathProgramCache]: Analyzing trace with hash -702630595, now seen corresponding path program 1 times [2018-10-24 12:38:14,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:14,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:14,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:14,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:14,897 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:38:14,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:38:14,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 12:38:14,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:38:14,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-24 12:38:14,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-24 12:38:14,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-24 12:38:15,000 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-10-24 12:38:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:15,025 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-10-24 12:38:15,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 12:38:15,027 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-10-24 12:38:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:15,037 INFO L225 Difference]: With dead ends: 43 [2018-10-24 12:38:15,037 INFO L226 Difference]: Without dead ends: 18 [2018-10-24 12:38:15,041 INFO L605 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 [2018-10-24 12:38:15,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-24 12:38:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-24 12:38:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-24 12:38:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-10-24 12:38:15,085 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2018-10-24 12:38:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:15,085 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-10-24 12:38:15,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-24 12:38:15,086 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-10-24 12:38:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 12:38:15,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:15,087 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:15,087 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:15,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash -972126638, now seen corresponding path program 1 times [2018-10-24 12:38:15,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:15,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:15,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:15,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:15,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:38:15,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:38:15,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 12:38:15,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:38:15,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 12:38:15,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 12:38:15,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 12:38:15,295 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2018-10-24 12:38:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:15,382 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-10-24 12:38:15,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 12:38:15,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-24 12:38:15,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:15,384 INFO L225 Difference]: With dead ends: 29 [2018-10-24 12:38:15,385 INFO L226 Difference]: Without dead ends: 24 [2018-10-24 12:38:15,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:38:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-24 12:38:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-10-24 12:38:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-24 12:38:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-10-24 12:38:15,393 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2018-10-24 12:38:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:15,394 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-10-24 12:38:15,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 12:38:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-10-24 12:38:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 12:38:15,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:15,397 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:15,398 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:15,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:15,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1998515670, now seen corresponding path program 1 times [2018-10-24 12:38:15,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:15,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:15,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:15,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:15,403 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:38:15,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:38:15,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 12:38:15,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:38:15,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 12:38:15,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 12:38:15,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-24 12:38:15,499 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 4 states. [2018-10-24 12:38:15,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:15,574 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-10-24 12:38:15,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 12:38:15,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-24 12:38:15,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:15,577 INFO L225 Difference]: With dead ends: 34 [2018-10-24 12:38:15,577 INFO L226 Difference]: Without dead ends: 23 [2018-10-24 12:38:15,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 12:38:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-24 12:38:15,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-10-24 12:38:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-24 12:38:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-10-24 12:38:15,584 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2018-10-24 12:38:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:15,584 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-10-24 12:38:15,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 12:38:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-10-24 12:38:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 12:38:15,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:15,586 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:15,586 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:15,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:15,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1293803971, now seen corresponding path program 1 times [2018-10-24 12:38:15,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:15,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:15,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:15,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:15,588 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:38:15,685 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:15,685 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:15,686 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-10-24 12:38:15,688 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [19], [21], [25], [28], [30], [32], [36], [43], [46], [48], [54], [55], [56], [58] [2018-10-24 12:38:15,724 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 12:38:15,724 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 12:38:16,016 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 12:38:16,018 INFO L272 AbstractInterpreter]: Visited 19 different actions 77 times. Merged at 8 different actions 37 times. Widened at 2 different actions 3 times. Found 7 fixpoints after 4 different actions. Largest state had 10 variables. [2018-10-24 12:38:16,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:16,026 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 12:38:16,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:16,026 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:38:16,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:16,039 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:38:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:16,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:38:16,223 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:38:16,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:16,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-24 12:38:16,548 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:16,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 12:38:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 12:38:16,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-10-24 12:38:16,550 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2018-10-24 12:38:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:16,624 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-10-24 12:38:16,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 12:38:16,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-10-24 12:38:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:16,625 INFO L225 Difference]: With dead ends: 39 [2018-10-24 12:38:16,626 INFO L226 Difference]: Without dead ends: 26 [2018-10-24 12:38:16,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-10-24 12:38:16,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-24 12:38:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-10-24 12:38:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-24 12:38:16,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-10-24 12:38:16,633 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2018-10-24 12:38:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:16,633 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-10-24 12:38:16,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 12:38:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-10-24 12:38:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-24 12:38:16,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:16,634 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:16,635 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:16,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:16,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1379909750, now seen corresponding path program 2 times [2018-10-24 12:38:16,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:16,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:16,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:16,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:16,637 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 12:38:16,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:16,753 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:16,753 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:16,754 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:16,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:16,754 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:38:16,765 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:38:16,766 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:38:16,808 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-10-24 12:38:16,809 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:16,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 12:38:16,970 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-24 12:38:17,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:17,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-10-24 12:38:17,135 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:17,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 12:38:17,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 12:38:17,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-10-24 12:38:17,137 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2018-10-24 12:38:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:17,953 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-10-24 12:38:17,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 12:38:17,954 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-10-24 12:38:17,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:17,955 INFO L225 Difference]: With dead ends: 73 [2018-10-24 12:38:17,955 INFO L226 Difference]: Without dead ends: 57 [2018-10-24 12:38:17,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=363, Unknown=0, NotChecked=0, Total=552 [2018-10-24 12:38:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-24 12:38:17,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2018-10-24 12:38:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-24 12:38:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-10-24 12:38:17,967 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 24 [2018-10-24 12:38:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:17,967 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-10-24 12:38:17,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 12:38:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-10-24 12:38:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 12:38:17,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:17,969 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:17,969 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:17,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:17,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1699386968, now seen corresponding path program 3 times [2018-10-24 12:38:17,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:17,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:17,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:17,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:17,971 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 12:38:18,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:18,136 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:18,136 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:18,136 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:18,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:18,137 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 12:38:18,151 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:38:18,151 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-24 12:38:18,175 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:38:18,175 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:18,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 12:38:18,254 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 12:38:18,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:18,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2018-10-24 12:38:18,409 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:18,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 12:38:18,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 12:38:18,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2018-10-24 12:38:18,411 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 11 states. [2018-10-24 12:38:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:18,481 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2018-10-24 12:38:18,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 12:38:18,485 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-10-24 12:38:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:18,487 INFO L225 Difference]: With dead ends: 72 [2018-10-24 12:38:18,487 INFO L226 Difference]: Without dead ends: 50 [2018-10-24 12:38:18,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2018-10-24 12:38:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-24 12:38:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2018-10-24 12:38:18,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-24 12:38:18,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-10-24 12:38:18,500 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 41 [2018-10-24 12:38:18,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:18,500 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-10-24 12:38:18,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 12:38:18,500 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-10-24 12:38:18,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-24 12:38:18,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:18,503 INFO L375 BasicCegarLoop]: trace histogram [10, 8, 8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:18,504 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:18,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:18,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1734727982, now seen corresponding path program 4 times [2018-10-24 12:38:18,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:18,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:18,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:18,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:18,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 70 proven. 26 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-24 12:38:18,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:18,758 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:18,758 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:18,759 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:18,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:18,759 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:18,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:18,767 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:38:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:18,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 70 proven. 26 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-24 12:38:18,897 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 70 proven. 26 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-24 12:38:19,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:19,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2018-10-24 12:38:19,020 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:19,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 12:38:19,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 12:38:19,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-10-24 12:38:19,022 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 13 states. [2018-10-24 12:38:19,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:19,089 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2018-10-24 12:38:19,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 12:38:19,097 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2018-10-24 12:38:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:19,099 INFO L225 Difference]: With dead ends: 81 [2018-10-24 12:38:19,099 INFO L226 Difference]: Without dead ends: 56 [2018-10-24 12:38:19,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-10-24 12:38:19,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-24 12:38:19,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2018-10-24 12:38:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-24 12:38:19,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2018-10-24 12:38:19,115 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 47 [2018-10-24 12:38:19,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:19,116 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2018-10-24 12:38:19,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 12:38:19,116 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2018-10-24 12:38:19,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-24 12:38:19,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:19,120 INFO L375 BasicCegarLoop]: trace histogram [12, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:19,120 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:19,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:19,121 INFO L82 PathProgramCache]: Analyzing trace with hash 2050902056, now seen corresponding path program 5 times [2018-10-24 12:38:19,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:19,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:19,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:19,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:19,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 101 proven. 40 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 12:38:19,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:19,331 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:19,332 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:19,332 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:19,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:19,332 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:19,341 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:38:19,341 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:38:19,355 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-24 12:38:19,356 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:19,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:19,495 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 12:38:19,495 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 12:38:19,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:19,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 17 [2018-10-24 12:38:19,628 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:19,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 12:38:19,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 12:38:19,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-10-24 12:38:19,630 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 13 states. [2018-10-24 12:38:20,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:20,802 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2018-10-24 12:38:20,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-24 12:38:20,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2018-10-24 12:38:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:20,804 INFO L225 Difference]: With dead ends: 136 [2018-10-24 12:38:20,805 INFO L226 Difference]: Without dead ends: 108 [2018-10-24 12:38:20,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=649, Invalid=1331, Unknown=0, NotChecked=0, Total=1980 [2018-10-24 12:38:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-24 12:38:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 83. [2018-10-24 12:38:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-24 12:38:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2018-10-24 12:38:20,821 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 53 [2018-10-24 12:38:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:20,821 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2018-10-24 12:38:20,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 12:38:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2018-10-24 12:38:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-24 12:38:20,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:20,824 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 18, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:20,824 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:20,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1138844106, now seen corresponding path program 6 times [2018-10-24 12:38:20,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:20,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:20,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:20,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:20,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 274 proven. 57 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-10-24 12:38:21,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:21,020 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:21,020 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:21,020 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:21,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:21,021 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:21,030 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:38:21,030 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-24 12:38:21,061 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:38:21,061 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:21,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 274 proven. 57 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-10-24 12:38:21,204 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:21,600 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 274 proven. 57 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-10-24 12:38:21,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:21,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2018-10-24 12:38:21,621 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:21,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 12:38:21,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 12:38:21,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=251, Unknown=0, NotChecked=0, Total=420 [2018-10-24 12:38:21,624 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 17 states. [2018-10-24 12:38:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:21,697 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2018-10-24 12:38:21,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 12:38:21,700 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 82 [2018-10-24 12:38:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:21,701 INFO L225 Difference]: With dead ends: 149 [2018-10-24 12:38:21,701 INFO L226 Difference]: Without dead ends: 95 [2018-10-24 12:38:21,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 150 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=251, Unknown=0, NotChecked=0, Total=420 [2018-10-24 12:38:21,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-24 12:38:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2018-10-24 12:38:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-24 12:38:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2018-10-24 12:38:21,724 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 82 [2018-10-24 12:38:21,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:21,726 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2018-10-24 12:38:21,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 12:38:21,726 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2018-10-24 12:38:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 12:38:21,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:21,727 INFO L375 BasicCegarLoop]: trace histogram [24, 21, 21, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:21,728 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:21,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:21,728 INFO L82 PathProgramCache]: Analyzing trace with hash -2009672909, now seen corresponding path program 7 times [2018-10-24 12:38:21,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:21,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:21,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 360 proven. 77 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-10-24 12:38:21,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:21,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:21,928 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:21,928 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:21,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:21,929 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:21,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:21,936 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:38:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:21,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 360 proven. 77 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-10-24 12:38:22,328 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 360 proven. 77 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-10-24 12:38:22,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:22,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2018-10-24 12:38:22,548 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:22,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 12:38:22,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 12:38:22,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-10-24 12:38:22,550 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 19 states. [2018-10-24 12:38:22,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:22,684 INFO L93 Difference]: Finished difference Result 164 states and 172 transitions. [2018-10-24 12:38:22,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 12:38:22,686 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 91 [2018-10-24 12:38:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:22,687 INFO L225 Difference]: With dead ends: 164 [2018-10-24 12:38:22,687 INFO L226 Difference]: Without dead ends: 104 [2018-10-24 12:38:22,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 166 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-10-24 12:38:22,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-24 12:38:22,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2018-10-24 12:38:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-24 12:38:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2018-10-24 12:38:22,703 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 91 [2018-10-24 12:38:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:22,704 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2018-10-24 12:38:22,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-24 12:38:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2018-10-24 12:38:22,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 12:38:22,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:22,706 INFO L375 BasicCegarLoop]: trace histogram [27, 24, 24, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:22,706 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:22,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1289095638, now seen corresponding path program 8 times [2018-10-24 12:38:22,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:22,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:22,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:22,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:22,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 458 proven. 100 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2018-10-24 12:38:22,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:22,883 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:22,884 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:22,884 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:22,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:22,884 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:22,894 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:38:22,895 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:38:22,984 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-24 12:38:22,984 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:22,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 460 proven. 100 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2018-10-24 12:38:23,184 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 993 backedges. 8 proven. 552 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2018-10-24 12:38:25,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:25,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2018-10-24 12:38:25,063 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:25,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 12:38:25,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 12:38:25,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:38:25,068 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand 21 states. [2018-10-24 12:38:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:25,689 INFO L93 Difference]: Finished difference Result 179 states and 187 transitions. [2018-10-24 12:38:25,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 12:38:25,689 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2018-10-24 12:38:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:25,690 INFO L225 Difference]: With dead ends: 179 [2018-10-24 12:38:25,691 INFO L226 Difference]: Without dead ends: 113 [2018-10-24 12:38:25,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 182 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:38:25,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-24 12:38:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2018-10-24 12:38:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-24 12:38:25,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2018-10-24 12:38:25,713 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 100 [2018-10-24 12:38:25,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:25,713 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 113 transitions. [2018-10-24 12:38:25,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-24 12:38:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 113 transitions. [2018-10-24 12:38:25,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 12:38:25,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:25,718 INFO L375 BasicCegarLoop]: trace histogram [30, 27, 27, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:25,719 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:25,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:25,719 INFO L82 PathProgramCache]: Analyzing trace with hash -340366701, now seen corresponding path program 9 times [2018-10-24 12:38:25,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:25,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:25,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:25,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:25,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 568 proven. 126 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2018-10-24 12:38:25,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:25,904 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:25,904 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:25,904 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:25,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:25,904 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:25,912 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:38:25,913 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-24 12:38:25,968 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:38:25,968 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:25,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 568 proven. 126 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2018-10-24 12:38:26,161 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 568 proven. 126 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2018-10-24 12:38:26,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:26,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2018-10-24 12:38:26,432 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:26,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 12:38:26,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 12:38:26,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:38:26,434 INFO L87 Difference]: Start difference. First operand 110 states and 113 transitions. Second operand 23 states. [2018-10-24 12:38:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:26,682 INFO L93 Difference]: Finished difference Result 194 states and 202 transitions. [2018-10-24 12:38:26,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 12:38:26,682 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 109 [2018-10-24 12:38:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:26,683 INFO L225 Difference]: With dead ends: 194 [2018-10-24 12:38:26,683 INFO L226 Difference]: Without dead ends: 122 [2018-10-24 12:38:26,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 198 SyntacticMatches, 11 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=340, Unknown=0, NotChecked=0, Total=552 [2018-10-24 12:38:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-10-24 12:38:26,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2018-10-24 12:38:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-24 12:38:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2018-10-24 12:38:26,695 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 109 [2018-10-24 12:38:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:26,695 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2018-10-24 12:38:26,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-24 12:38:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2018-10-24 12:38:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 12:38:26,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:26,698 INFO L375 BasicCegarLoop]: trace histogram [33, 30, 30, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:26,698 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:26,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:26,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2030161270, now seen corresponding path program 10 times [2018-10-24 12:38:26,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:26,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:26,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:26,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:26,699 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2018-10-24 12:38:26,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:26,906 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:26,906 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:26,906 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:26,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:26,907 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:26,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:26,920 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:38:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:26,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2018-10-24 12:38:27,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1506 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2018-10-24 12:38:27,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:27,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2018-10-24 12:38:27,315 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:27,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 12:38:27,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 12:38:27,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2018-10-24 12:38:27,316 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand 11 states. [2018-10-24 12:38:27,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:27,364 INFO L93 Difference]: Finished difference Result 192 states and 197 transitions. [2018-10-24 12:38:27,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 12:38:27,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 118 [2018-10-24 12:38:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:27,366 INFO L225 Difference]: With dead ends: 192 [2018-10-24 12:38:27,367 INFO L226 Difference]: Without dead ends: 187 [2018-10-24 12:38:27,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2018-10-24 12:38:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-24 12:38:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 154. [2018-10-24 12:38:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-10-24 12:38:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2018-10-24 12:38:27,383 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 118 [2018-10-24 12:38:27,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:27,383 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 158 transitions. [2018-10-24 12:38:27,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 12:38:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 158 transitions. [2018-10-24 12:38:27,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 12:38:27,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:27,386 INFO L375 BasicCegarLoop]: trace histogram [44, 40, 40, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:27,386 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:27,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:27,386 INFO L82 PathProgramCache]: Analyzing trace with hash -969563822, now seen corresponding path program 11 times [2018-10-24 12:38:27,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:27,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:27,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:27,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:27,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-10-24 12:38:27,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:27,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:27,722 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:27,722 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:27,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:27,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:27,730 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:38:27,730 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:38:27,802 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-10-24 12:38:27,802 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:27,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-10-24 12:38:28,118 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-10-24 12:38:28,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:28,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2018-10-24 12:38:28,253 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:28,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 12:38:28,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 12:38:28,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-10-24 12:38:28,254 INFO L87 Difference]: Start difference. First operand 154 states and 158 transitions. Second operand 13 states. [2018-10-24 12:38:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:28,399 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2018-10-24 12:38:28,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 12:38:28,399 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 153 [2018-10-24 12:38:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:28,401 INFO L225 Difference]: With dead ends: 227 [2018-10-24 12:38:28,401 INFO L226 Difference]: Without dead ends: 222 [2018-10-24 12:38:28,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2018-10-24 12:38:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-24 12:38:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 189. [2018-10-24 12:38:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-24 12:38:28,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 194 transitions. [2018-10-24 12:38:28,418 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 194 transitions. Word has length 153 [2018-10-24 12:38:28,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:28,419 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 194 transitions. [2018-10-24 12:38:28,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-24 12:38:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 194 transitions. [2018-10-24 12:38:28,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-24 12:38:28,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:28,421 INFO L375 BasicCegarLoop]: trace histogram [55, 50, 50, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:28,422 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:28,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:28,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1779605514, now seen corresponding path program 12 times [2018-10-24 12:38:28,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:28,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:28,423 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:28,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:28,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-10-24 12:38:28,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:28,849 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:28,849 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:28,849 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:28,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:28,849 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:28,857 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:38:28,857 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-24 12:38:28,921 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:38:28,921 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:28,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-10-24 12:38:29,163 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-10-24 12:38:29,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:29,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2018-10-24 12:38:29,957 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:29,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 12:38:29,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 12:38:29,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-10-24 12:38:29,958 INFO L87 Difference]: Start difference. First operand 189 states and 194 transitions. Second operand 15 states. [2018-10-24 12:38:30,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:30,149 INFO L93 Difference]: Finished difference Result 262 states and 269 transitions. [2018-10-24 12:38:30,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 12:38:30,150 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 188 [2018-10-24 12:38:30,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:30,152 INFO L225 Difference]: With dead ends: 262 [2018-10-24 12:38:30,152 INFO L226 Difference]: Without dead ends: 257 [2018-10-24 12:38:30,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 364 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=155, Invalid=225, Unknown=0, NotChecked=0, Total=380 [2018-10-24 12:38:30,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-24 12:38:30,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 224. [2018-10-24 12:38:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-10-24 12:38:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 230 transitions. [2018-10-24 12:38:30,178 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 230 transitions. Word has length 188 [2018-10-24 12:38:30,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:30,178 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 230 transitions. [2018-10-24 12:38:30,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-24 12:38:30,179 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 230 transitions. [2018-10-24 12:38:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-24 12:38:30,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:30,180 INFO L375 BasicCegarLoop]: trace histogram [66, 60, 60, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:30,181 INFO L424 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:30,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:30,181 INFO L82 PathProgramCache]: Analyzing trace with hash 388824786, now seen corresponding path program 13 times [2018-10-24 12:38:30,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:30,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:30,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:30,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:30,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-10-24 12:38:31,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:31,017 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:31,017 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:31,018 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:31,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:31,018 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:31,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:31,027 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:38:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:31,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-10-24 12:38:31,381 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-10-24 12:38:31,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:31,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2018-10-24 12:38:31,639 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:31,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 12:38:31,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 12:38:31,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=251, Unknown=0, NotChecked=0, Total=420 [2018-10-24 12:38:31,641 INFO L87 Difference]: Start difference. First operand 224 states and 230 transitions. Second operand 17 states. [2018-10-24 12:38:31,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:31,911 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-10-24 12:38:31,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 12:38:31,912 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 223 [2018-10-24 12:38:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:31,914 INFO L225 Difference]: With dead ends: 297 [2018-10-24 12:38:31,914 INFO L226 Difference]: Without dead ends: 292 [2018-10-24 12:38:31,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 432 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=251, Unknown=0, NotChecked=0, Total=420 [2018-10-24 12:38:31,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-24 12:38:31,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 259. [2018-10-24 12:38:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-24 12:38:31,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 266 transitions. [2018-10-24 12:38:31,941 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 266 transitions. Word has length 223 [2018-10-24 12:38:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:31,942 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 266 transitions. [2018-10-24 12:38:31,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-24 12:38:31,942 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 266 transitions. [2018-10-24 12:38:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-24 12:38:31,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:31,944 INFO L375 BasicCegarLoop]: trace histogram [77, 70, 70, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:31,944 INFO L424 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:31,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:31,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1062399370, now seen corresponding path program 14 times [2018-10-24 12:38:31,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:31,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:31,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:31,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:31,946 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-10-24 12:38:32,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:32,221 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:32,221 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:32,221 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:32,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:32,221 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:32,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-24 12:38:32,231 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-24 12:38:32,365 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2018-10-24 12:38:32,366 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:32,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-10-24 12:38:32,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-10-24 12:38:33,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:33,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2018-10-24 12:38:33,061 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:33,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 12:38:33,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 12:38:33,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-10-24 12:38:33,062 INFO L87 Difference]: Start difference. First operand 259 states and 266 transitions. Second operand 19 states. [2018-10-24 12:38:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:33,157 INFO L93 Difference]: Finished difference Result 332 states and 341 transitions. [2018-10-24 12:38:33,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 12:38:33,157 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 258 [2018-10-24 12:38:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:33,159 INFO L225 Difference]: With dead ends: 332 [2018-10-24 12:38:33,159 INFO L226 Difference]: Without dead ends: 327 [2018-10-24 12:38:33,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 500 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=279, Unknown=0, NotChecked=0, Total=462 [2018-10-24 12:38:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-24 12:38:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 294. [2018-10-24 12:38:33,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-10-24 12:38:33,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 302 transitions. [2018-10-24 12:38:33,189 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 302 transitions. Word has length 258 [2018-10-24 12:38:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:33,190 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 302 transitions. [2018-10-24 12:38:33,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-24 12:38:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 302 transitions. [2018-10-24 12:38:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-24 12:38:33,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:33,192 INFO L375 BasicCegarLoop]: trace histogram [88, 80, 80, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:33,192 INFO L424 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:33,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:33,193 INFO L82 PathProgramCache]: Analyzing trace with hash -790873006, now seen corresponding path program 15 times [2018-10-24 12:38:33,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:33,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:33,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:33,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:33,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-10-24 12:38:33,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:33,574 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:33,575 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:33,575 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:33,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:33,575 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:33,582 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-24 12:38:33,582 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-24 12:38:33,673 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-24 12:38:33,673 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-24 12:38:33,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-10-24 12:38:34,007 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-10-24 12:38:34,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:34,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2018-10-24 12:38:34,291 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:34,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 12:38:34,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 12:38:34,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:38:34,293 INFO L87 Difference]: Start difference. First operand 294 states and 302 transitions. Second operand 21 states. [2018-10-24 12:38:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:34,478 INFO L93 Difference]: Finished difference Result 367 states and 377 transitions. [2018-10-24 12:38:34,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 12:38:34,479 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 293 [2018-10-24 12:38:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:34,482 INFO L225 Difference]: With dead ends: 367 [2018-10-24 12:38:34,482 INFO L226 Difference]: Without dead ends: 362 [2018-10-24 12:38:34,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 568 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:38:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-10-24 12:38:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 329. [2018-10-24 12:38:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-10-24 12:38:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 338 transitions. [2018-10-24 12:38:34,519 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 338 transitions. Word has length 293 [2018-10-24 12:38:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:34,520 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 338 transitions. [2018-10-24 12:38:34,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-24 12:38:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 338 transitions. [2018-10-24 12:38:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-24 12:38:34,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:34,522 INFO L375 BasicCegarLoop]: trace histogram [99, 90, 90, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:34,522 INFO L424 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:34,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:34,523 INFO L82 PathProgramCache]: Analyzing trace with hash 547939574, now seen corresponding path program 16 times [2018-10-24 12:38:34,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:34,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:34,523 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-24 12:38:34,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:34,524 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-10-24 12:38:34,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:34,997 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 12:38:34,997 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-24 12:38:34,997 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 12:38:34,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 12:38:34,997 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 12:38:35,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:35,006 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 12:38:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:35,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 12:38:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-10-24 12:38:35,425 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 12:38:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-10-24 12:38:35,768 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 12:38:35,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2018-10-24 12:38:35,769 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 12:38:35,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 12:38:35,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 12:38:35,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-10-24 12:38:35,770 INFO L87 Difference]: Start difference. First operand 329 states and 338 transitions. Second operand 23 states. [2018-10-24 12:38:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:35,947 INFO L93 Difference]: Finished difference Result 402 states and 413 transitions. [2018-10-24 12:38:35,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 12:38:35,947 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 328 [2018-10-24 12:38:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:35,950 INFO L225 Difference]: With dead ends: 402 [2018-10-24 12:38:35,950 INFO L226 Difference]: Without dead ends: 397 [2018-10-24 12:38:35,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 636 SyntacticMatches, 11 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=340, Unknown=0, NotChecked=0, Total=552 [2018-10-24 12:38:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-10-24 12:38:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 364. [2018-10-24 12:38:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-10-24 12:38:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 374 transitions. [2018-10-24 12:38:35,983 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 374 transitions. Word has length 328 [2018-10-24 12:38:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:35,984 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 374 transitions. [2018-10-24 12:38:35,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-24 12:38:35,984 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 374 transitions. [2018-10-24 12:38:35,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-24 12:38:35,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 12:38:35,987 INFO L375 BasicCegarLoop]: trace histogram [110, 100, 100, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 12:38:35,987 INFO L424 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 12:38:35,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 12:38:35,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1390107090, now seen corresponding path program 17 times [2018-10-24 12:38:35,988 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 12:38:35,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:35,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 12:38:35,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 12:38:35,989 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 12:38:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 12:38:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 17095 backedges. 17077 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 12:38:42,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 12:38:42,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2018-10-24 12:38:42,866 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 12:38:42,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-24 12:38:42,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-24 12:38:42,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=5663, Unknown=0, NotChecked=0, Total=10920 [2018-10-24 12:38:42,871 INFO L87 Difference]: Start difference. First operand 364 states and 374 transitions. Second operand 105 states. [2018-10-24 12:38:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 12:38:45,366 INFO L93 Difference]: Finished difference Result 14899 states and 15359 transitions. [2018-10-24 12:38:45,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-24 12:38:45,366 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 363 [2018-10-24 12:38:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 12:38:45,367 INFO L225 Difference]: With dead ends: 14899 [2018-10-24 12:38:45,367 INFO L226 Difference]: Without dead ends: 0 [2018-10-24 12:38:45,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2018-10-24 12:38:45,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-24 12:38:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-24 12:38:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-24 12:38:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-24 12:38:45,393 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2018-10-24 12:38:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 12:38:45,393 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-24 12:38:45,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-24 12:38:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-24 12:38:45,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-24 12:38:45,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-24 12:38:47,441 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-10-24 12:38:51,636 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:53,697 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:53,700 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:53,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:53,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:53,761 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:53,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:53,945 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,045 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,128 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,216 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,262 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,494 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:54,846 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,029 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,083 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,197 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,483 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,512 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,684 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:55,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:56,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:56,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:56,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:56,488 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:56,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:56,716 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:56,830 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:56,944 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:56,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:57,318 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:57,401 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:57,703 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:57,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:57,891 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:57,932 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:58,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:58,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:58,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:58,256 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:58,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:58,418 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:58,458 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:58,599 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:58,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,246 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,255 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,525 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,623 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,722 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:38:59,954 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:00,067 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:00,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:00,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:00,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:01,055 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:01,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:01,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:01,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:01,981 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:02,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:02,073 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:02,592 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:02,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:02,773 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:03,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:03,471 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:03,693 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:03,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:03,978 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:04,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:04,542 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:04,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:05,178 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:05,216 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:05,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:05,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:05,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:05,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:05,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:06,396 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:06,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:08,129 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:08,752 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:08,929 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:09,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:10,121 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:10,743 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:11,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:11,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:11,956 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:12,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:12,460 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:12,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:12,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:12,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:12,986 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:13,017 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:13,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:14,276 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:14,378 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:14,625 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:14,775 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:15,022 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:15,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:15,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:16,021 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:16,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:16,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:16,919 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:18,853 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:18,923 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:19,075 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:19,653 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:20,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:20,833 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:21,845 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:22,126 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:22,467 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:22,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:22,542 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:23,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:24,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:25,089 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:25,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:26,094 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:26,299 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:26,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:26,626 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:27,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:28,563 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:28,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:29,416 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:30,642 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:30,899 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:32,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:33,668 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:34,305 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:36,962 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:37,013 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:37,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:37,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:37,789 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:37,813 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:38,178 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:39,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:41,050 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:43,549 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:49,737 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:50,296 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:52,302 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:54,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:54,577 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:54,794 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:54,963 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:55,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:58,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:39:59,074 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-24 12:40:12,562 WARN L179 SmtUtils]: Spent 1.42 m on a formula simplification. DAG size of input: 5167 DAG size of output: 2220 [2018-10-24 12:40:19,114 WARN L179 SmtUtils]: Spent 6.50 s on a formula simplification. DAG size of input: 664 DAG size of output: 59 [2018-10-24 12:41:52,844 WARN L179 SmtUtils]: Spent 1.56 m on a formula simplification. DAG size of input: 2199 DAG size of output: 362 [2018-10-24 12:41:52,848 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-24 12:41:52,848 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:41:52,849 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-24 12:41:52,849 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-24 12:41:52,849 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-24 12:41:52,849 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-24 12:41:52,849 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 24) no Hoare annotation was computed. [2018-10-24 12:41:52,849 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-10-24 12:41:52,849 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-24 12:41:52,849 INFO L425 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-10-24 12:41:52,850 INFO L421 ceAbstractionStarter]: At program point L17-4(lines 17 21) the Hoare annotation is: (let ((.cse0 (<= 10 main_~m~0)) (.cse1 (<= 10 main_~n~0))) (or (and (<= 30 main_~k~0) (<= main_~i~0 3) .cse0 .cse1) (and .cse0 (<= 100 main_~k~0) .cse1) (and .cse0 (<= 40 main_~k~0) (<= main_~i~0 4) .cse1) (and .cse0 (<= 0 main_~k~0) (<= main_~i~0 0) .cse1) (and .cse0 (<= 60 main_~k~0) (<= main_~i~0 6) .cse1) (and .cse0 (<= 10 main_~k~0) (<= main_~i~0 1) .cse1) (and (<= 80 main_~k~0) .cse0 (<= main_~i~0 8) .cse1) (and (<= 50 main_~k~0) .cse0 (<= main_~i~0 5) .cse1) (and .cse0 (<= main_~i~0 9) .cse1 (<= 90 main_~k~0)) (and (<= 70 main_~k~0) .cse0 (<= main_~i~0 7) .cse1) (and .cse0 (<= 20 main_~k~0) (<= main_~i~0 2) .cse1))) [2018-10-24 12:41:52,850 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 24) no Hoare annotation was computed. [2018-10-24 12:41:52,850 INFO L421 ceAbstractionStarter]: At program point L17-5(lines 17 21) the Hoare annotation is: (and (<= 10 main_~m~0) (<= 100 main_~k~0) (<= 10 main_~n~0)) [2018-10-24 12:41:52,850 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 24) the Hoare annotation is: true [2018-10-24 12:41:52,850 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-10-24 12:41:52,850 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2018-10-24 12:41:52,850 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-10-24 12:41:52,850 INFO L425 ceAbstractionStarter]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2018-10-24 12:41:52,852 INFO L421 ceAbstractionStarter]: At program point L18-4(lines 18 20) the Hoare annotation is: (let ((.cse27 (<= main_~j~0 4)) (.cse40 (<= main_~j~0 5)) (.cse37 (<= main_~j~0 2)) (.cse25 (<= main_~j~0 6)) (.cse8 (<= main_~j~0 0)) (.cse31 (<= main_~j~0 1)) (.cse30 (<= main_~j~0 9)) (.cse10 (<= main_~j~0 7)) (.cse15 (<= main_~j~0 8)) (.cse4 (<= 10 main_~n~0)) (.cse3 (<= 10 main_~m~0)) (.cse12 (<= main_~j~0 3))) (let ((.cse36 (<= 10 main_~k~0)) (.cse38 (<= 30 main_~k~0)) (.cse16 (<= main_~i~0 0)) (.cse23 (<= 70 main_~k~0)) (.cse14 (and .cse3 .cse12)) (.cse7 (<= 60 main_~k~0)) (.cse35 (<= 90 main_~k~0)) (.cse32 (<= 20 main_~k~0)) (.cse20 (and .cse15 .cse3 .cse4)) (.cse6 (and .cse3 .cse10 .cse4)) (.cse29 (<= 50 main_~k~0)) (.cse18 (and .cse3 .cse30)) (.cse24 (<= main_~i~0 7)) (.cse0 (and .cse3 .cse31 .cse4)) (.cse39 (<= 80 main_~k~0)) (.cse5 (<= main_~i~0 8)) (.cse34 (and .cse3 .cse8 .cse4)) (.cse11 (<= main_~i~0 3)) (.cse26 (and .cse3 .cse4 .cse25)) (.cse19 (and .cse3 .cse37)) (.cse9 (<= main_~i~0 1)) (.cse28 (<= main_~i~0 2)) (.cse13 (<= main_~i~0 5)) (.cse21 (and .cse40 .cse3)) (.cse1 (<= main_~i~0 6)) (.cse2 (<= (+ main_~i~0 1) main_~n~0)) (.cse17 (and .cse3 .cse27)) (.cse33 (<= 40 main_~k~0)) (.cse22 (<= main_~i~0 4))) (or (and .cse0 .cse1 (<= 61 main_~k~0)) (and (<= 100 main_~k~0) (and .cse2 .cse3 .cse4)) (and .cse5 .cse6 (<= 87 main_~k~0)) (and .cse3 .cse7 .cse8 .cse1 .cse4) (and .cse3 .cse9 (<= 17 main_~k~0) .cse10 .cse4) (and (<= 33 main_~k~0) .cse11 .cse3 .cse12 .cse4) (and (<= 53 main_~k~0) .cse13 .cse14 .cse4) (and .cse13 .cse0 (<= 51 main_~k~0)) (and .cse15 .cse3 (<= 8 main_~k~0) .cse16 .cse4) (and (<= 64 main_~k~0) .cse1 .cse4 .cse17) (and (<= 99 main_~k~0) (and .cse2 .cse18 .cse4)) (and (<= 82 main_~k~0) .cse19 .cse5 .cse4) (and (<= 89 main_~k~0) .cse18 .cse5 .cse4) (and (<= 69 main_~k~0) .cse18 .cse1 .cse4) (and .cse3 .cse12 (<= 3 main_~k~0) .cse16 .cse4) (and .cse20 .cse5 (<= 88 main_~k~0)) (and .cse21 (<= 45 main_~k~0) .cse22 .cse4) (and .cse23 .cse3 .cse8 .cse24 .cse4) (and .cse3 (<= 6 main_~k~0) .cse16 .cse4 .cse25) (and (and .cse2 .cse26) (<= 96 main_~k~0)) (and (<= 63 main_~k~0) .cse14 .cse1 .cse4) (and .cse3 (<= 0 main_~k~0) .cse8 .cse16 .cse4) (and .cse11 .cse3 .cse27 (<= 34 main_~k~0) .cse4) (and .cse15 (<= 28 main_~k~0) .cse3 .cse28 .cse4) (and .cse13 (<= 52 main_~k~0) .cse19 .cse4) (and .cse29 .cse22 .cse3 .cse4) (and .cse3 (<= 9 main_~k~0) .cse30 .cse16 .cse4) (and (<= 21 main_~k~0) .cse3 .cse31 .cse28 .cse4) (and .cse22 .cse26 (<= 46 main_~k~0)) (and .cse11 .cse3 (<= 39 main_~k~0) .cse30 .cse4) (and (<= 67 main_~k~0) .cse6 .cse1) (and .cse22 .cse19 (<= 42 main_~k~0) .cse4) (and .cse3 .cse12 .cse9 (<= 13 main_~k~0) .cse4) (and .cse22 (<= 43 main_~k~0) .cse14 .cse4) (and .cse3 .cse32 .cse9 .cse4) (and (<= 97 main_~k~0) (and .cse2 .cse6)) (and .cse11 (<= 32 main_~k~0) .cse19 .cse4) (and (<= 58 main_~k~0) .cse13 .cse20) (and .cse11 .cse3 .cse33 .cse4) (and .cse19 .cse24 (<= 72 main_~k~0) .cse4) (and (and .cse2 .cse34) .cse35) (and .cse3 .cse36 .cse16 .cse4) (and .cse3 .cse31 .cse16 .cse4 (<= 1 main_~k~0)) (and .cse3 (<= 22 main_~k~0) .cse28 .cse37 .cse4) (and (<= 11 main_~k~0) .cse3 .cse31 .cse9 .cse4) (and .cse38 .cse11 .cse3 .cse8 .cse4) (and .cse39 .cse3 .cse24 .cse4) (and .cse40 .cse3 (<= 5 main_~k~0) .cse16 .cse4) (and (<= 75 main_~k~0) .cse21 .cse24 .cse4) (and .cse3 (<= 29 main_~k~0) .cse28 .cse30 .cse4) (and .cse40 .cse3 (<= 25 main_~k~0) .cse28 .cse4) (and .cse3 (<= 26 main_~k~0) .cse28 .cse4 .cse25) (and .cse3 .cse36 .cse9 .cse8 .cse4) (and .cse11 .cse0 (<= 31 main_~k~0)) (and (<= 66 main_~k~0) .cse26 .cse1) (and (<= 83 main_~k~0) .cse5 .cse14 .cse4) (and .cse3 .cse22 .cse27 (<= 44 main_~k~0) .cse4) (and .cse3 (<= 7 main_~k~0) .cse10 .cse16 .cse4) (and .cse22 .cse6 (<= 47 main_~k~0)) (and (<= 2 main_~k~0) .cse3 .cse37 .cse16 .cse4) (and .cse24 .cse14 .cse4 (<= 73 main_~k~0)) (and .cse26 .cse24 (<= 76 main_~k~0)) (and (<= 23 main_~k~0) .cse3 .cse12 .cse28 .cse4) (and (<= 78 main_~k~0) .cse20 .cse24) (and .cse3 .cse22 .cse30 (<= 49 main_~k~0) .cse4) (and .cse3 .cse28 .cse27 .cse4 (<= 24 main_~k~0)) (and (<= 84 main_~k~0) .cse5 .cse4 .cse17) (and .cse38 .cse3 .cse28 .cse4) (and .cse11 .cse3 (<= 36 main_~k~0) .cse4 .cse25) (and .cse3 .cse27 .cse16 (<= 4 main_~k~0) .cse4) (and .cse23 .cse3 .cse1 .cse4) (and (and .cse2 .cse14 .cse4) (<= 93 main_~k~0)) (and (<= 37 main_~k~0) .cse11 .cse3 .cse10 .cse4) (and .cse13 .cse6 (<= 57 main_~k~0)) (and (<= 95 main_~k~0) (and .cse2 .cse21 .cse4)) (and .cse0 (<= 81 main_~k~0) .cse5) (and (<= 68 main_~k~0) .cse20 .cse1) (and .cse7 .cse3 .cse13 .cse4) (and .cse20 .cse22 (<= 48 main_~k~0)) (and (<= 59 main_~k~0) .cse13 .cse18 .cse4) (and .cse5 .cse3 .cse4 .cse35) (and .cse3 .cse9 .cse37 (<= 12 main_~k~0) .cse4) (and .cse11 .cse40 .cse3 (<= 35 main_~k~0) .cse4) (and .cse3 .cse32 .cse28 .cse8 .cse4) (and (and .cse2 .cse20) (<= 98 main_~k~0)) (and .cse6 .cse24 (<= 77 main_~k~0)) (and .cse29 .cse3 .cse13 .cse8 .cse4) (and (<= 85 main_~k~0) .cse21 .cse5 .cse4) (and .cse22 .cse0 (<= 41 main_~k~0)) (and .cse3 .cse9 .cse30 .cse4 (<= 19 main_~k~0)) (and .cse40 .cse3 (<= 15 main_~k~0) .cse9 .cse4) (and .cse18 .cse24 (<= 79 main_~k~0) .cse4) (and (<= 54 main_~k~0) .cse13 .cse4 .cse17) (and (<= 74 main_~k~0) .cse24 .cse4 .cse17) (and .cse0 (<= 71 main_~k~0) .cse24) (and (<= 86 main_~k~0) .cse5 .cse26) (and (and .cse2 .cse19 .cse4) (<= 92 main_~k~0)) (and .cse15 .cse3 (<= 18 main_~k~0) .cse9 .cse4) (and (<= 91 main_~k~0) (and .cse2 .cse0)) (and .cse39 .cse5 .cse34) (and (<= 16 main_~k~0) .cse3 .cse9 .cse4 .cse25) (and .cse11 .cse15 .cse3 (<= 38 main_~k~0) .cse4) (and (<= 56 main_~k~0) .cse26 .cse13) (and .cse19 (<= 62 main_~k~0) .cse1 .cse4) (and (<= 14 main_~k~0) .cse3 .cse9 .cse27 .cse4) (and .cse3 .cse28 .cse10 .cse4 (<= 27 main_~k~0)) (and .cse21 (<= 55 main_~k~0) .cse13 .cse4) (and .cse21 (<= 65 main_~k~0) .cse1 .cse4) (and (and .cse2 .cse4 .cse17) (<= 94 main_~k~0)) (and .cse3 .cse33 .cse22 .cse8 .cse4)))) [2018-10-24 12:41:52,852 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-24 12:41:52,852 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:41:52,852 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-24 12:41:52,852 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-24 12:41:52,852 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-24 12:41:52,852 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-24 12:41:52,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:41:52 BoogieIcfgContainer [2018-10-24 12:41:52,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 12:41:52,905 INFO L168 Benchmark]: Toolchain (without parser) took 218983.97 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-24 12:41:52,906 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 12:41:52,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.16 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. [2018-10-24 12:41:52,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.34 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. [2018-10-24 12:41:52,910 INFO L168 Benchmark]: Boogie Preprocessor took 23.34 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. [2018-10-24 12:41:52,910 INFO L168 Benchmark]: RCFGBuilder took 457.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-10-24 12:41:52,914 INFO L168 Benchmark]: TraceAbstraction took 218192.52 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-24 12:41:52,923 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 288.16 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 17.34 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 23.34 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 457.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.7 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218192.52 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.2 GB in the beginning and 3.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.9 GB. 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: 17]: Loop Invariant Derived loop invariant: ((((((((((((30 <= k && i <= 3) && 10 <= m) && 10 <= n) || ((10 <= m && 100 <= k) && 10 <= n)) || (((10 <= m && 40 <= k) && i <= 4) && 10 <= n)) || (((10 <= m && 0 <= k) && i <= 0) && 10 <= n)) || (((10 <= m && 60 <= k) && i <= 6) && 10 <= n)) || (((10 <= m && 10 <= k) && i <= 1) && 10 <= n)) || (((80 <= k && 10 <= m) && i <= 8) && 10 <= n)) || (((50 <= k && 10 <= m) && i <= 5) && 10 <= n)) || (((10 <= m && i <= 9) && 10 <= n) && 90 <= k)) || (((70 <= k && 10 <= m) && i <= 7) && 10 <= n)) || (((10 <= m && 20 <= k) && i <= 2) && 10 <= n) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10 <= m && j <= 1) && 10 <= n) && i <= 6) && 61 <= k) || (100 <= k && (i + 1 <= n && 10 <= m) && 10 <= n)) || ((i <= 8 && (10 <= m && j <= 7) && 10 <= n) && 87 <= k)) || ((((10 <= m && 60 <= k) && j <= 0) && i <= 6) && 10 <= n)) || ((((10 <= m && i <= 1) && 17 <= k) && j <= 7) && 10 <= n)) || ((((33 <= k && i <= 3) && 10 <= m) && j <= 3) && 10 <= n)) || (((53 <= k && i <= 5) && 10 <= m && j <= 3) && 10 <= n)) || ((i <= 5 && (10 <= m && j <= 1) && 10 <= n) && 51 <= k)) || ((((j <= 8 && 10 <= m) && 8 <= k) && i <= 0) && 10 <= n)) || (((64 <= k && i <= 6) && 10 <= n) && 10 <= m && j <= 4)) || (99 <= k && (i + 1 <= n && 10 <= m && j <= 9) && 10 <= n)) || (((82 <= k && 10 <= m && j <= 2) && i <= 8) && 10 <= n)) || (((89 <= k && 10 <= m && j <= 9) && i <= 8) && 10 <= n)) || (((69 <= k && 10 <= m && j <= 9) && i <= 6) && 10 <= n)) || ((((10 <= m && j <= 3) && 3 <= k) && i <= 0) && 10 <= n)) || ((((j <= 8 && 10 <= m) && 10 <= n) && i <= 8) && 88 <= k)) || ((((j <= 5 && 10 <= m) && 45 <= k) && i <= 4) && 10 <= n)) || ((((70 <= k && 10 <= m) && j <= 0) && i <= 7) && 10 <= n)) || ((((10 <= m && 6 <= k) && i <= 0) && 10 <= n) && j <= 6)) || ((i + 1 <= n && (10 <= m && 10 <= n) && j <= 6) && 96 <= k)) || (((63 <= k && 10 <= m && j <= 3) && i <= 6) && 10 <= n)) || ((((10 <= m && 0 <= k) && j <= 0) && i <= 0) && 10 <= n)) || ((((i <= 3 && 10 <= m) && j <= 4) && 34 <= k) && 10 <= n)) || ((((j <= 8 && 28 <= k) && 10 <= m) && i <= 2) && 10 <= n)) || (((i <= 5 && 52 <= k) && 10 <= m && j <= 2) && 10 <= n)) || (((50 <= k && i <= 4) && 10 <= m) && 10 <= n)) || ((((10 <= m && 9 <= k) && j <= 9) && i <= 0) && 10 <= n)) || ((((21 <= k && 10 <= m) && j <= 1) && i <= 2) && 10 <= n)) || ((i <= 4 && (10 <= m && 10 <= n) && j <= 6) && 46 <= k)) || ((((i <= 3 && 10 <= m) && 39 <= k) && j <= 9) && 10 <= n)) || ((67 <= k && (10 <= m && j <= 7) && 10 <= n) && i <= 6)) || (((i <= 4 && 10 <= m && j <= 2) && 42 <= k) && 10 <= n)) || ((((10 <= m && j <= 3) && i <= 1) && 13 <= k) && 10 <= n)) || (((i <= 4 && 43 <= k) && 10 <= m && j <= 3) && 10 <= n)) || (((10 <= m && 20 <= k) && i <= 1) && 10 <= n)) || (97 <= k && i + 1 <= n && (10 <= m && j <= 7) && 10 <= n)) || (((i <= 3 && 32 <= k) && 10 <= m && j <= 2) && 10 <= n)) || ((58 <= k && i <= 5) && (j <= 8 && 10 <= m) && 10 <= n)) || (((i <= 3 && 10 <= m) && 40 <= k) && 10 <= n)) || ((((10 <= m && j <= 2) && i <= 7) && 72 <= k) && 10 <= n)) || ((i + 1 <= n && (10 <= m && j <= 0) && 10 <= n) && 90 <= k)) || (((10 <= m && 10 <= k) && i <= 0) && 10 <= n)) || ((((10 <= m && j <= 1) && i <= 0) && 10 <= n) && 1 <= k)) || ((((10 <= m && 22 <= k) && i <= 2) && j <= 2) && 10 <= n)) || ((((11 <= k && 10 <= m) && j <= 1) && i <= 1) && 10 <= n)) || ((((30 <= k && i <= 3) && 10 <= m) && j <= 0) && 10 <= n)) || (((80 <= k && 10 <= m) && i <= 7) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 5 <= k) && i <= 0) && 10 <= n)) || (((75 <= k && j <= 5 && 10 <= m) && i <= 7) && 10 <= n)) || ((((10 <= m && 29 <= k) && i <= 2) && j <= 9) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 25 <= k) && i <= 2) && 10 <= n)) || ((((10 <= m && 26 <= k) && i <= 2) && 10 <= n) && j <= 6)) || ((((10 <= m && 10 <= k) && i <= 1) && j <= 0) && 10 <= n)) || ((i <= 3 && (10 <= m && j <= 1) && 10 <= n) && 31 <= k)) || ((66 <= k && (10 <= m && 10 <= n) && j <= 6) && i <= 6)) || (((83 <= k && i <= 8) && 10 <= m && j <= 3) && 10 <= n)) || ((((10 <= m && i <= 4) && j <= 4) && 44 <= k) && 10 <= n)) || ((((10 <= m && 7 <= k) && j <= 7) && i <= 0) && 10 <= n)) || ((i <= 4 && (10 <= m && j <= 7) && 10 <= n) && 47 <= k)) || ((((2 <= k && 10 <= m) && j <= 2) && i <= 0) && 10 <= n)) || (((i <= 7 && 10 <= m && j <= 3) && 10 <= n) && 73 <= k)) || ((((10 <= m && 10 <= n) && j <= 6) && i <= 7) && 76 <= k)) || ((((23 <= k && 10 <= m) && j <= 3) && i <= 2) && 10 <= n)) || ((78 <= k && (j <= 8 && 10 <= m) && 10 <= n) && i <= 7)) || ((((10 <= m && i <= 4) && j <= 9) && 49 <= k) && 10 <= n)) || ((((10 <= m && i <= 2) && j <= 4) && 10 <= n) && 24 <= k)) || (((84 <= k && i <= 8) && 10 <= n) && 10 <= m && j <= 4)) || (((30 <= k && 10 <= m) && i <= 2) && 10 <= n)) || ((((i <= 3 && 10 <= m) && 36 <= k) && 10 <= n) && j <= 6)) || ((((10 <= m && j <= 4) && i <= 0) && 4 <= k) && 10 <= n)) || (((70 <= k && 10 <= m) && i <= 6) && 10 <= n)) || (((i + 1 <= n && 10 <= m && j <= 3) && 10 <= n) && 93 <= k)) || ((((37 <= k && i <= 3) && 10 <= m) && j <= 7) && 10 <= n)) || ((i <= 5 && (10 <= m && j <= 7) && 10 <= n) && 57 <= k)) || (95 <= k && (i + 1 <= n && j <= 5 && 10 <= m) && 10 <= n)) || ((((10 <= m && j <= 1) && 10 <= n) && 81 <= k) && i <= 8)) || ((68 <= k && (j <= 8 && 10 <= m) && 10 <= n) && i <= 6)) || (((60 <= k && 10 <= m) && i <= 5) && 10 <= n)) || ((((j <= 8 && 10 <= m) && 10 <= n) && i <= 4) && 48 <= k)) || (((59 <= k && i <= 5) && 10 <= m && j <= 9) && 10 <= n)) || (((i <= 8 && 10 <= m) && 10 <= n) && 90 <= k)) || ((((10 <= m && i <= 1) && j <= 2) && 12 <= k) && 10 <= n)) || ((((i <= 3 && j <= 5) && 10 <= m) && 35 <= k) && 10 <= n)) || ((((10 <= m && 20 <= k) && i <= 2) && j <= 0) && 10 <= n)) || ((i + 1 <= n && (j <= 8 && 10 <= m) && 10 <= n) && 98 <= k)) || ((((10 <= m && j <= 7) && 10 <= n) && i <= 7) && 77 <= k)) || ((((50 <= k && 10 <= m) && i <= 5) && j <= 0) && 10 <= n)) || (((85 <= k && j <= 5 && 10 <= m) && i <= 8) && 10 <= n)) || ((i <= 4 && (10 <= m && j <= 1) && 10 <= n) && 41 <= k)) || ((((10 <= m && i <= 1) && j <= 9) && 10 <= n) && 19 <= k)) || ((((j <= 5 && 10 <= m) && 15 <= k) && i <= 1) && 10 <= n)) || ((((10 <= m && j <= 9) && i <= 7) && 79 <= k) && 10 <= n)) || (((54 <= k && i <= 5) && 10 <= n) && 10 <= m && j <= 4)) || (((74 <= k && i <= 7) && 10 <= n) && 10 <= m && j <= 4)) || ((((10 <= m && j <= 1) && 10 <= n) && 71 <= k) && i <= 7)) || ((86 <= k && i <= 8) && (10 <= m && 10 <= n) && j <= 6)) || (((i + 1 <= n && 10 <= m && j <= 2) && 10 <= n) && 92 <= k)) || ((((j <= 8 && 10 <= m) && 18 <= k) && i <= 1) && 10 <= n)) || (91 <= k && i + 1 <= n && (10 <= m && j <= 1) && 10 <= n)) || ((80 <= k && i <= 8) && (10 <= m && j <= 0) && 10 <= n)) || ((((16 <= k && 10 <= m) && i <= 1) && 10 <= n) && j <= 6)) || ((((i <= 3 && j <= 8) && 10 <= m) && 38 <= k) && 10 <= n)) || ((56 <= k && (10 <= m && 10 <= n) && j <= 6) && i <= 5)) || ((((10 <= m && j <= 2) && 62 <= k) && i <= 6) && 10 <= n)) || ((((14 <= k && 10 <= m) && i <= 1) && j <= 4) && 10 <= n)) || ((((10 <= m && i <= 2) && j <= 7) && 10 <= n) && 27 <= k)) || ((((j <= 5 && 10 <= m) && 55 <= k) && i <= 5) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 65 <= k) && i <= 6) && 10 <= n)) || (((i + 1 <= n && 10 <= n) && 10 <= m && j <= 4) && 94 <= k)) || ((((10 <= m && 40 <= k) && i <= 4) && j <= 0) && 10 <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 218.0s OverallTime, 20 OverallIterations, 110 TraceHistogramMax, 7.2s AutomataDifference, 0.0s DeadEndRemovalTime, 187.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 886 SDtfs, 1449 SDslu, 3450 SDs, 0 SdLazy, 1174 SolverSat, 233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4553 GetRequests, 4066 SyntacticMatches, 60 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3884 ImplicationChecksByTransitivity, 18.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=364occurred in iteration=19, 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: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 293 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 27 PreInvPairs, 5144 NumberOfFragments, 1976 HoareAnnotationTreeSize, 27 FomulaSimplifications, 6058176 FormulaSimplificationTreeSizeReduction, 87.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 175756 FormulaSimplificationTreeSizeReductionInter, 100.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 19.9s InterpolantComputationTime, 4664 NumberOfCodeBlocks, 4518 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 6741 ConstructedInterpolants, 0 QuantifiedInterpolants, 6960361 SizeOfPredicates, 46 NumberOfNonLiveVariables, 4020 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 52 InterpolantComputations, 4 PerfectInterpolantSequences, 46689/172026 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...