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/eca-rers2012/Problem17_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:55:31,303 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:55:31,305 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:55:31,321 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:55:31,321 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:55:31,323 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:55:31,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:55:31,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:55:31,329 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:55:31,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:55:31,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:55:31,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:55:31,331 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:55:31,332 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:55:31,333 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:55:31,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:55:31,335 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:55:31,345 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:55:31,347 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:55:31,351 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:55:31,352 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:55:31,354 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:55:31,361 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:55:31,377 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 [2018-10-25 01:55:31,399 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:55:31,399 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:55:31,400 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:55:31,400 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:55:31,400 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:55:31,400 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:55:31,401 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:55:31,401 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:55:31,401 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:55:31,401 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:55:31,401 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:55:31,401 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:55:31,401 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:55:31,402 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:55:31,402 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:55:31,402 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:55:31,403 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:55:31,403 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:55:31,403 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:55:31,403 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:55:31,404 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:55:31,404 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:55:31,404 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:55:31,404 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:55:31,404 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:55:31,404 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:55:31,405 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:55:31,405 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:55:31,405 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:55:31,405 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:55:31,405 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:55:31,405 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:55:31,406 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:55:31,408 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:55:31,408 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:55:31,408 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:55:31,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:55:31,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:55:31,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:55:31,497 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:55:31,498 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:55:31,499 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-25 01:55:31,572 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9bb9aa4d5/4d988d797ece469380ebb320a03adfb9/FLAGa9b474715 [2018-10-25 01:55:32,222 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:55:32,223 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-25 01:55:32,249 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9bb9aa4d5/4d988d797ece469380ebb320a03adfb9/FLAGa9b474715 [2018-10-25 01:55:32,268 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9bb9aa4d5/4d988d797ece469380ebb320a03adfb9 [2018-10-25 01:55:32,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:55:32,286 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:55:32,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:55:32,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:55:32,293 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:55:32,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:55:32" (1/1) ... [2018-10-25 01:55:32,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131b7c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:32, skipping insertion in model container [2018-10-25 01:55:32,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:55:32" (1/1) ... [2018-10-25 01:55:32,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:55:32,430 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:55:33,441 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:55:33,445 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:55:33,814 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:55:33,838 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:55:33,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33 WrapperNode [2018-10-25 01:55:33,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:55:33,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:55:33,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:55:33,840 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:55:33,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (1/1) ... [2018-10-25 01:55:33,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (1/1) ... [2018-10-25 01:55:34,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:55:34,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:55:34,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:55:34,340 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:55:34,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (1/1) ... [2018-10-25 01:55:34,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (1/1) ... [2018-10-25 01:55:34,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (1/1) ... [2018-10-25 01:55:34,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (1/1) ... [2018-10-25 01:55:34,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (1/1) ... [2018-10-25 01:55:34,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (1/1) ... [2018-10-25 01:55:34,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (1/1) ... [2018-10-25 01:55:34,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:55:34,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:55:34,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:55:34,596 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:55:34,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (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 [2018-10-25 01:55:34,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:55:34,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:55:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:55:34,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:55:34,676 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:55:34,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:55:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:55:34,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:55:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:55:34,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:55:48,158 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:55:48,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:48 BoogieIcfgContainer [2018-10-25 01:55:48,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:55:48,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:55:48,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:55:48,163 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:55:48,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:55:32" (1/3) ... [2018-10-25 01:55:48,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0feebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:48, skipping insertion in model container [2018-10-25 01:55:48,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:55:33" (2/3) ... [2018-10-25 01:55:48,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0feebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:48, skipping insertion in model container [2018-10-25 01:55:48,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:48" (3/3) ... [2018-10-25 01:55:48,167 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label18_true-unreach-call.c [2018-10-25 01:55:48,178 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:55:48,188 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:55:48,208 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:55:48,264 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:55:48,264 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:55:48,264 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:55:48,264 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:55:48,265 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:55:48,265 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:55:48,265 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:55:48,265 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:55:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:55:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-25 01:55:48,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:48,341 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:55:48,345 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:48,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:48,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2094085436, now seen corresponding path program 1 times [2018-10-25 01:55:48,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:48,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:48,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:48,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:48,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:48,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:48,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:55:48,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:48,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:55:49,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:55:49,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:49,008 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:56:01,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:01,261 INFO L93 Difference]: Finished difference Result 2142 states and 3971 transitions. [2018-10-25 01:56:01,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:56:01,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-25 01:56:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:01,296 INFO L225 Difference]: With dead ends: 2142 [2018-10-25 01:56:01,296 INFO L226 Difference]: Without dead ends: 1532 [2018-10-25 01:56:01,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:56:01,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2018-10-25 01:56:01,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1519. [2018-10-25 01:56:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2018-10-25 01:56:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2456 transitions. [2018-10-25 01:56:01,479 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2456 transitions. Word has length 62 [2018-10-25 01:56:01,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:01,480 INFO L481 AbstractCegarLoop]: Abstraction has 1519 states and 2456 transitions. [2018-10-25 01:56:01,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:56:01,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2456 transitions. [2018-10-25 01:56:01,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-25 01:56:01,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:01,496 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:56:01,496 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:01,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:01,497 INFO L82 PathProgramCache]: Analyzing trace with hash -858039278, now seen corresponding path program 1 times [2018-10-25 01:56:01,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:01,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:01,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:01,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:01,500 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:56:01,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:56:01,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:56:01,862 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:56:01,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:56:01,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:56:01,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:56:01,865 INFO L87 Difference]: Start difference. First operand 1519 states and 2456 transitions. Second operand 5 states. [2018-10-25 01:56:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:10,634 INFO L93 Difference]: Finished difference Result 4424 states and 7338 transitions. [2018-10-25 01:56:10,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:56:10,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-10-25 01:56:10,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:10,663 INFO L225 Difference]: With dead ends: 4424 [2018-10-25 01:56:10,663 INFO L226 Difference]: Without dead ends: 2911 [2018-10-25 01:56:10,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:56:10,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-25 01:56:10,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2875. [2018-10-25 01:56:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2018-10-25 01:56:10,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4373 transitions. [2018-10-25 01:56:10,774 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4373 transitions. Word has length 134 [2018-10-25 01:56:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:10,775 INFO L481 AbstractCegarLoop]: Abstraction has 2875 states and 4373 transitions. [2018-10-25 01:56:10,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:56:10,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4373 transitions. [2018-10-25 01:56:10,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-25 01:56:10,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:10,786 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:56:10,787 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:10,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:10,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1330082406, now seen corresponding path program 1 times [2018-10-25 01:56:10,790 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:10,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:10,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:10,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:10,792 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:11,232 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-25 01:56:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:56:11,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:11,287 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:56:11,288 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2018-10-25 01:56:11,290 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:56:11,348 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:56:11,348 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:56:13,110 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:56:13,112 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:56:13,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:13,162 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:56:13,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:13,163 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 [2018-10-25 01:56:13,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:13,180 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:56:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:13,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:56:42,160 WARN L179 SmtUtils]: Spent 24.28 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-25 01:57:02,482 WARN L179 SmtUtils]: Spent 16.15 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-25 01:57:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:03,243 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:07,853 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-25 01:57:07,921 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-25 01:57:10,381 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-25 01:57:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:10,800 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:57:10,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-25 01:57:10,800 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:57:10,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:57:10,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:57:10,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=159, Unknown=5, NotChecked=0, Total=210 [2018-10-25 01:57:10,802 INFO L87 Difference]: Start difference. First operand 2875 states and 4373 transitions. Second operand 6 states. [2018-10-25 01:57:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:33,570 INFO L93 Difference]: Finished difference Result 11141 states and 17632 transitions. [2018-10-25 01:57:33,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:57:33,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-25 01:57:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:33,628 INFO L225 Difference]: With dead ends: 11141 [2018-10-25 01:57:33,628 INFO L226 Difference]: Without dead ends: 8272 [2018-10-25 01:57:33,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 56.4s TimeCoverageRelationStatistics Valid=54, Invalid=181, Unknown=5, NotChecked=0, Total=240 [2018-10-25 01:57:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8272 states. [2018-10-25 01:57:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8272 to 8228. [2018-10-25 01:57:33,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8228 states. [2018-10-25 01:57:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 12850 transitions. [2018-10-25 01:57:33,923 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 12850 transitions. Word has length 137 [2018-10-25 01:57:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:33,923 INFO L481 AbstractCegarLoop]: Abstraction has 8228 states and 12850 transitions. [2018-10-25 01:57:33,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:57:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 12850 transitions. [2018-10-25 01:57:33,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-25 01:57:33,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:33,931 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:57:33,931 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:33,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:33,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1486702837, now seen corresponding path program 1 times [2018-10-25 01:57:33,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:33,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:33,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:33,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:33,936 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:34,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:57:34,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:57:34,283 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:57:34,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:57:34,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:57:34,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:57:34,284 INFO L87 Difference]: Start difference. First operand 8228 states and 12850 transitions. Second operand 6 states. [2018-10-25 01:57:49,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:49,441 INFO L93 Difference]: Finished difference Result 26590 states and 42877 transitions. [2018-10-25 01:57:49,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-25 01:57:49,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2018-10-25 01:57:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:49,549 INFO L225 Difference]: With dead ends: 26590 [2018-10-25 01:57:49,549 INFO L226 Difference]: Without dead ends: 18368 [2018-10-25 01:57:49,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:57:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18368 states. [2018-10-25 01:57:50,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18368 to 18270. [2018-10-25 01:57:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18270 states. [2018-10-25 01:57:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18270 states to 18270 states and 25649 transitions. [2018-10-25 01:57:50,143 INFO L78 Accepts]: Start accepts. Automaton has 18270 states and 25649 transitions. Word has length 207 [2018-10-25 01:57:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:50,144 INFO L481 AbstractCegarLoop]: Abstraction has 18270 states and 25649 transitions. [2018-10-25 01:57:50,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:57:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 18270 states and 25649 transitions. [2018-10-25 01:57:50,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-25 01:57:50,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:50,156 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:57:50,156 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:50,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:50,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1133264394, now seen corresponding path program 1 times [2018-10-25 01:57:50,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:50,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:50,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:50,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:50,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:50,516 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:57:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 111 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 01:57:50,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:50,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:50,928 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-25 01:57:50,929 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1247], [1252], [1254], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:50,945 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:50,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:51,851 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:51,852 INFO L272 AbstractInterpreter]: Visited 90 different actions 256 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:57:51,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:51,883 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:51,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:51,883 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 [2018-10-25 01:57:51,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:51,895 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:51,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:52,730 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:57:53,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:57:53,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:57:53,228 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:57:53,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:57:53,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:57:53,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:57:53,231 INFO L87 Difference]: Start difference. First operand 18270 states and 25649 transitions. Second operand 9 states. [2018-10-25 01:58:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:01,195 INFO L93 Difference]: Finished difference Result 40580 states and 57754 transitions. [2018-10-25 01:58:01,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:58:01,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2018-10-25 01:58:01,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:01,276 INFO L225 Difference]: With dead ends: 40580 [2018-10-25 01:58:01,276 INFO L226 Difference]: Without dead ends: 22316 [2018-10-25 01:58:01,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 438 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 01:58:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22316 states. [2018-10-25 01:58:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22316 to 22253. [2018-10-25 01:58:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22253 states. [2018-10-25 01:58:01,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22253 states to 22253 states and 27377 transitions. [2018-10-25 01:58:01,793 INFO L78 Accepts]: Start accepts. Automaton has 22253 states and 27377 transitions. Word has length 220 [2018-10-25 01:58:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:01,794 INFO L481 AbstractCegarLoop]: Abstraction has 22253 states and 27377 transitions. [2018-10-25 01:58:01,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:58:01,794 INFO L276 IsEmpty]: Start isEmpty. Operand 22253 states and 27377 transitions. [2018-10-25 01:58:01,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-25 01:58:01,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:01,812 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:58:01,813 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:01,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:01,813 INFO L82 PathProgramCache]: Analyzing trace with hash -936554448, now seen corresponding path program 1 times [2018-10-25 01:58:01,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:01,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:01,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:01,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:01,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:02,143 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:58:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 63 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 01:58:03,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:03,042 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:03,042 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-25 01:58:03,044 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1215], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:03,050 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:03,050 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:03,510 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:03,510 INFO L272 AbstractInterpreter]: Visited 97 different actions 293 times. Merged at 7 different actions 25 times. Widened at 1 different actions 1 times. Found 3 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:58:03,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:03,548 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:03,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:03,548 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) [2018-10-25 01:58:03,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:03,558 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:58:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:03,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:58:03,705 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:03,822 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:58:03,842 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:58:03,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 01:58:03,843 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:58:03,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:58:03,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:58:03,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:58:03,844 INFO L87 Difference]: Start difference. First operand 22253 states and 27377 transitions. Second operand 3 states. [2018-10-25 01:58:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:08,961 INFO L93 Difference]: Finished difference Result 44500 states and 54748 transitions. [2018-10-25 01:58:08,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:58:08,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-10-25 01:58:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:09,029 INFO L225 Difference]: With dead ends: 44500 [2018-10-25 01:58:09,029 INFO L226 Difference]: Without dead ends: 22253 [2018-10-25 01:58:09,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 446 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:58:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22253 states. [2018-10-25 01:58:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22253 to 21819. [2018-10-25 01:58:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21819 states. [2018-10-25 01:58:09,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21819 states to 21819 states and 25916 transitions. [2018-10-25 01:58:09,470 INFO L78 Accepts]: Start accepts. Automaton has 21819 states and 25916 transitions. Word has length 223 [2018-10-25 01:58:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:09,470 INFO L481 AbstractCegarLoop]: Abstraction has 21819 states and 25916 transitions. [2018-10-25 01:58:09,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:58:09,471 INFO L276 IsEmpty]: Start isEmpty. Operand 21819 states and 25916 transitions. [2018-10-25 01:58:09,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-25 01:58:09,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:09,486 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:58:09,486 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:09,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash 606214992, now seen corresponding path program 1 times [2018-10-25 01:58:09,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:09,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:09,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:09,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:09,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:58:10,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:10,032 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:10,032 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 323 with the following transitions: [2018-10-25 01:58:10,033 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1215], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:10,037 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:10,037 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:10,709 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:10,710 INFO L272 AbstractInterpreter]: Visited 109 different actions 334 times. Merged at 8 different actions 30 times. Widened at 1 different actions 2 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:58:10,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:10,752 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:10,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:10,752 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 [2018-10-25 01:58:10,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:10,762 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:58:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:10,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:58:10,958 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:11,107 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:58:11,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:58:11,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-10-25 01:58:11,128 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:58:11,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:58:11,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:58:11,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:58:11,131 INFO L87 Difference]: Start difference. First operand 21819 states and 25916 transitions. Second operand 7 states. [2018-10-25 01:58:27,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:27,371 INFO L93 Difference]: Finished difference Result 53426 states and 65191 transitions. [2018-10-25 01:58:27,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 01:58:27,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2018-10-25 01:58:27,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:27,452 INFO L225 Difference]: With dead ends: 53426 [2018-10-25 01:58:27,452 INFO L226 Difference]: Without dead ends: 31613 [2018-10-25 01:58:27,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 645 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:58:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31613 states. [2018-10-25 01:58:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31613 to 31109. [2018-10-25 01:58:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31109 states. [2018-10-25 01:58:28,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31109 states to 31109 states and 37029 transitions. [2018-10-25 01:58:28,284 INFO L78 Accepts]: Start accepts. Automaton has 31109 states and 37029 transitions. Word has length 322 [2018-10-25 01:58:28,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:28,285 INFO L481 AbstractCegarLoop]: Abstraction has 31109 states and 37029 transitions. [2018-10-25 01:58:28,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:58:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 31109 states and 37029 transitions. [2018-10-25 01:58:28,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-10-25 01:58:28,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:28,328 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:58:28,328 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:28,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:28,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1096113387, now seen corresponding path program 1 times [2018-10-25 01:58:28,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:28,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:28,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:28,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:28,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-25 01:58:28,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:28,650 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:28,650 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 404 with the following transitions: [2018-10-25 01:58:28,651 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1274], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1681], [1684], [1688], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:28,656 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:28,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:29,344 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:29,344 INFO L272 AbstractInterpreter]: Visited 177 different actions 535 times. Merged at 8 different actions 29 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:58:29,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:29,379 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:29,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:29,380 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 [2018-10-25 01:58:29,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:29,392 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:58:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:29,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-25 01:58:29,615 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-25 01:58:30,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:58:30,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-10-25 01:58:30,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:58:30,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:58:30,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:58:30,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:58:30,029 INFO L87 Difference]: Start difference. First operand 31109 states and 37029 transitions. Second operand 3 states. [2018-10-25 01:58:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:34,848 INFO L93 Difference]: Finished difference Result 68311 states and 81559 transitions. [2018-10-25 01:58:34,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:58:34,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 403 [2018-10-25 01:58:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:34,945 INFO L225 Difference]: With dead ends: 68311 [2018-10-25 01:58:34,945 INFO L226 Difference]: Without dead ends: 37208 [2018-10-25 01:58:34,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:58:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37208 states. [2018-10-25 01:58:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37208 to 36335. [2018-10-25 01:58:35,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36335 states. [2018-10-25 01:58:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36335 states to 36335 states and 42837 transitions. [2018-10-25 01:58:35,602 INFO L78 Accepts]: Start accepts. Automaton has 36335 states and 42837 transitions. Word has length 403 [2018-10-25 01:58:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:35,603 INFO L481 AbstractCegarLoop]: Abstraction has 36335 states and 42837 transitions. [2018-10-25 01:58:35,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:58:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 36335 states and 42837 transitions. [2018-10-25 01:58:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-10-25 01:58:35,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:35,637 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:58:35,637 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:35,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:35,638 INFO L82 PathProgramCache]: Analyzing trace with hash -33237442, now seen corresponding path program 1 times [2018-10-25 01:58:35,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:35,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:35,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:35,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:35,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:58:36,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:36,129 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:36,129 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 412 with the following transitions: [2018-10-25 01:58:36,130 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1274], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1723], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:36,134 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:36,134 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:36,809 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:36,810 INFO L272 AbstractInterpreter]: Visited 185 different actions 560 times. Merged at 8 different actions 30 times. Widened at 1 different actions 2 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:58:36,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:36,847 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:36,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:36,848 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 [2018-10-25 01:58:36,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:36,859 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:58:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:36,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:58:37,181 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 01:58:37,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:58:37,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-25 01:58:37,449 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:58:37,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:58:37,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:58:37,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:58:37,451 INFO L87 Difference]: Start difference. First operand 36335 states and 42837 transitions. Second operand 7 states. [2018-10-25 01:58:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:58:53,681 INFO L93 Difference]: Finished difference Result 102486 states and 125440 transitions. [2018-10-25 01:58:53,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-25 01:58:53,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2018-10-25 01:58:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:58:53,861 INFO L225 Difference]: With dead ends: 102486 [2018-10-25 01:58:53,861 INFO L226 Difference]: Without dead ends: 58563 [2018-10-25 01:58:53,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 825 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:58:54,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58563 states. [2018-10-25 01:58:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58563 to 56548. [2018-10-25 01:58:54,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56548 states. [2018-10-25 01:58:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56548 states to 56548 states and 65876 transitions. [2018-10-25 01:58:54,939 INFO L78 Accepts]: Start accepts. Automaton has 56548 states and 65876 transitions. Word has length 411 [2018-10-25 01:58:54,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:58:54,940 INFO L481 AbstractCegarLoop]: Abstraction has 56548 states and 65876 transitions. [2018-10-25 01:58:54,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:58:54,940 INFO L276 IsEmpty]: Start isEmpty. Operand 56548 states and 65876 transitions. [2018-10-25 01:58:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-10-25 01:58:55,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:58:55,007 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:58:55,007 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:58:55,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash -779403212, now seen corresponding path program 1 times [2018-10-25 01:58:55,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:58:55,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:55,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:55,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:58:55,009 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:58:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-25 01:58:55,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:55,759 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:58:55,759 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 516 with the following transitions: [2018-10-25 01:58:55,760 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1420], [1425], [1427], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2031], [2034], [2038], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:58:55,766 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:58:55,767 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:58:56,265 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:58:56,265 INFO L272 AbstractInterpreter]: Visited 256 different actions 509 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:58:56,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:58:56,274 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:58:56,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:58:56,274 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 [2018-10-25 01:58:56,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:58:56,282 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:58:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:58:56,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:58:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-10-25 01:58:56,557 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:58:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-10-25 01:58:56,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:58:56,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-10-25 01:58:56,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:58:56,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:58:56,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:58:56,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:58:56,723 INFO L87 Difference]: Start difference. First operand 56548 states and 65876 transitions. Second operand 3 states. [2018-10-25 01:59:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:04,659 INFO L93 Difference]: Finished difference Result 138208 states and 162831 transitions. [2018-10-25 01:59:04,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:59:04,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 515 [2018-10-25 01:59:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:04,814 INFO L225 Difference]: With dead ends: 138208 [2018-10-25 01:59:04,814 INFO L226 Difference]: Without dead ends: 63488 [2018-10-25 01:59:04,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:59:05,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63488 states. [2018-10-25 01:59:06,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63488 to 59177. [2018-10-25 01:59:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59177 states. [2018-10-25 01:59:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59177 states to 59177 states and 67795 transitions. [2018-10-25 01:59:06,476 INFO L78 Accepts]: Start accepts. Automaton has 59177 states and 67795 transitions. Word has length 515 [2018-10-25 01:59:06,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:06,477 INFO L481 AbstractCegarLoop]: Abstraction has 59177 states and 67795 transitions. [2018-10-25 01:59:06,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:59:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 59177 states and 67795 transitions. [2018-10-25 01:59:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-10-25 01:59:06,500 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:06,500 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:59:06,500 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:06,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:06,501 INFO L82 PathProgramCache]: Analyzing trace with hash 756118400, now seen corresponding path program 1 times [2018-10-25 01:59:06,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:06,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:06,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:06,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:06,502 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:59:07,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:07,266 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:07,267 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 527 with the following transitions: [2018-10-25 01:59:07,267 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [44], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1215], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:07,276 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:07,276 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:08,444 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:08,444 INFO L272 AbstractInterpreter]: Visited 313 different actions 943 times. Merged at 8 different actions 30 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:59:08,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:08,477 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:08,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:08,477 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 [2018-10-25 01:59:08,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:08,494 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:08,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:59:09,032 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:59:09,284 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-25 01:59:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:59:10,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:59:10,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-10-25 01:59:10,180 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:59:10,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:59:10,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:59:10,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:59:10,182 INFO L87 Difference]: Start difference. First operand 59177 states and 67795 transitions. Second operand 6 states. [2018-10-25 01:59:22,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:59:22,958 INFO L93 Difference]: Finished difference Result 123081 states and 142165 transitions. [2018-10-25 01:59:22,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-25 01:59:22,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 526 [2018-10-25 01:59:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:59:23,070 INFO L225 Difference]: With dead ends: 123081 [2018-10-25 01:59:23,070 INFO L226 Difference]: Without dead ends: 53072 [2018-10-25 01:59:23,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1053 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-25 01:59:23,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53072 states. [2018-10-25 01:59:23,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53072 to 43481. [2018-10-25 01:59:23,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43481 states. [2018-10-25 01:59:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43481 states to 43481 states and 50243 transitions. [2018-10-25 01:59:23,868 INFO L78 Accepts]: Start accepts. Automaton has 43481 states and 50243 transitions. Word has length 526 [2018-10-25 01:59:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:59:23,869 INFO L481 AbstractCegarLoop]: Abstraction has 43481 states and 50243 transitions. [2018-10-25 01:59:23,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:59:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 43481 states and 50243 transitions. [2018-10-25 01:59:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-10-25 01:59:23,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:59:23,888 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:59:23,888 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:59:23,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:23,889 INFO L82 PathProgramCache]: Analyzing trace with hash -105848820, now seen corresponding path program 1 times [2018-10-25 01:59:23,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:59:23,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:23,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:23,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:59:23,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:59:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-25 01:59:24,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:24,694 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:59:24,694 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 533 with the following transitions: [2018-10-25 01:59:24,695 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [44], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:59:24,700 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:59:24,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:59:26,209 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:59:26,210 INFO L272 AbstractInterpreter]: Visited 313 different actions 943 times. Merged at 8 different actions 30 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:59:26,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:59:26,216 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:59:26,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:59:26,216 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 [2018-10-25 01:59:26,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:59:26,233 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:59:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:59:26,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:59:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-25 01:59:26,578 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:59:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-25 01:59:27,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:59:27,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-10-25 01:59:27,128 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:59:27,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:59:27,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:59:27,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:59:27,130 INFO L87 Difference]: Start difference. First operand 43481 states and 50243 transitions. Second operand 6 states. Received shutdown request... [2018-10-25 01:59:27,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:59:27,539 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:59:27,545 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:59:27,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:59:27 BoogieIcfgContainer [2018-10-25 01:59:27,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:59:27,547 INFO L168 Benchmark]: Toolchain (without parser) took 235264.16 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -678.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-25 01:59:27,548 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. [2018-10-25 01:59:27,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1550.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:27,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 499.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -947.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:27,550 INFO L168 Benchmark]: Boogie Preprocessor took 255.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:27,551 INFO L168 Benchmark]: RCFGBuilder took 13563.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 472.3 MB). Peak memory consumption was 472.3 MB. Max. memory is 7.1 GB. [2018-10-25 01:59:27,552 INFO L168 Benchmark]: TraceAbstraction took 219386.01 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -371.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-25 01:59:27,557 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 1550.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 499.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -947.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 255.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13563.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 472.3 MB). Peak memory consumption was 472.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219386.01 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -371.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 173]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 173). Cancelled while BasicCegarLoop was constructing difference of abstraction (43481states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (179 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 219.2s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 132.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3905 SDtfs, 19058 SDslu, 2809 SDs, 0 SdLazy, 34666 SolverSat, 9299 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 115.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6701 GetRequests, 6583 SyntacticMatches, 24 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 60.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59177occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.7s AbstIntTime, 9 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 17982 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 67.7s InterpolantComputationTime, 6981 NumberOfCodeBlocks, 6981 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 10240 ConstructedInterpolants, 136 QuantifiedInterpolants, 11249772 SizeOfPredicates, 10 NumberOfNonLiveVariables, 5276 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 30 InterpolantComputations, 8 PerfectInterpolantSequences, 8724/8936 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown