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/Problem14_label11_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:25:09,634 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:25:09,639 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:25:09,654 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:25:09,654 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:25:09,655 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:25:09,656 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:25:09,658 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:25:09,660 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:25:09,661 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:25:09,661 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:25:09,662 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:25:09,663 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:25:09,664 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:25:09,666 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:25:09,666 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:25:09,667 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:25:09,676 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:25:09,681 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:25:09,683 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:25:09,684 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:25:09,685 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:25:09,687 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:25:09,688 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:25:09,688 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:25:09,689 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:25:09,690 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:25:09,690 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:25:09,691 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:25:09,692 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:25:09,692 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:25:09,693 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:25:09,693 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:25:09,693 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:25:09,694 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:25:09,695 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:25:09,695 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 [2018-10-27 05:25:09,710 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:25:09,710 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:25:09,711 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:25:09,711 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:25:09,711 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:25:09,712 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:25:09,712 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:25:09,712 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:25:09,712 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:25:09,712 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:25:09,713 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:25:09,713 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:25:09,713 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:25:09,713 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:25:09,714 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:25:09,714 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:25:09,714 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:25:09,714 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:25:09,715 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:25:09,715 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:25:09,715 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:25:09,715 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:25:09,715 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:25:09,716 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:25:09,716 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:25:09,716 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:25:09,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:25:09,716 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:25:09,717 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:25:09,717 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:25:09,717 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:25:09,717 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:25:09,717 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:25:09,718 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:25:09,718 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:25:09,718 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:25:09,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:25:09,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:25:09,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:25:09,782 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:25:09,782 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:25:09,783 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label11_false-unreach-call_false-termination.c [2018-10-27 05:25:09,844 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fecec79e/84e3758d6a2f4ec2a07cee5d0edf72a0/FLAG61bf23f35 [2018-10-27 05:25:10,404 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:25:10,405 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label11_false-unreach-call_false-termination.c [2018-10-27 05:25:10,418 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fecec79e/84e3758d6a2f4ec2a07cee5d0edf72a0/FLAG61bf23f35 [2018-10-27 05:25:10,434 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2fecec79e/84e3758d6a2f4ec2a07cee5d0edf72a0 [2018-10-27 05:25:10,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:25:10,449 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:25:10,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:25:10,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:25:10,458 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:25:10,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:25:10" (1/1) ... [2018-10-27 05:25:10,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:10, skipping insertion in model container [2018-10-27 05:25:10,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:25:10" (1/1) ... [2018-10-27 05:25:10,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:25:10,549 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:25:11,083 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:25:11,088 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:25:11,250 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:25:11,269 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:25:11,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11 WrapperNode [2018-10-27 05:25:11,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:25:11,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:25:11,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:25:11,271 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:25:11,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (1/1) ... [2018-10-27 05:25:11,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (1/1) ... [2018-10-27 05:25:11,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:25:11,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:25:11,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:25:11,516 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:25:11,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (1/1) ... [2018-10-27 05:25:11,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (1/1) ... [2018-10-27 05:25:11,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (1/1) ... [2018-10-27 05:25:11,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (1/1) ... [2018-10-27 05:25:11,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (1/1) ... [2018-10-27 05:25:11,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (1/1) ... [2018-10-27 05:25:11,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (1/1) ... [2018-10-27 05:25:11,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:25:11,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:25:11,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:25:11,638 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:25:11,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (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 [2018-10-27 05:25:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:25:11,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:25:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:25:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:25:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:25:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:25:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:25:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:25:15,206 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:25:15,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:25:15 BoogieIcfgContainer [2018-10-27 05:25:15,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:25:15,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:25:15,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:25:15,214 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:25:15,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:25:10" (1/3) ... [2018-10-27 05:25:15,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:25:15, skipping insertion in model container [2018-10-27 05:25:15,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:25:11" (2/3) ... [2018-10-27 05:25:15,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5de1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:25:15, skipping insertion in model container [2018-10-27 05:25:15,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:25:15" (3/3) ... [2018-10-27 05:25:15,219 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label11_false-unreach-call_false-termination.c [2018-10-27 05:25:15,230 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:25:15,242 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:25:15,260 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:25:15,304 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:25:15,304 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:25:15,304 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:25:15,304 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:25:15,305 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:25:15,305 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:25:15,305 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:25:15,305 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:25:15,331 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 05:25:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-27 05:25:15,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:25:15,339 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] [2018-10-27 05:25:15,341 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:25:15,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:15,348 INFO L82 PathProgramCache]: Analyzing trace with hash 177535516, now seen corresponding path program 1 times [2018-10-27 05:25:15,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:25:15,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:15,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:25:15,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:15,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:25:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:25:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:25:15,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:25:15,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:25:15,781 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:25:15,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:25:15,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:25:15,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:25:15,807 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-27 05:25:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:25:18,500 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-27 05:25:18,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:25:18,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-27 05:25:18,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:25:18,527 INFO L225 Difference]: With dead ends: 894 [2018-10-27 05:25:18,528 INFO L226 Difference]: Without dead ends: 633 [2018-10-27 05:25:18,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:25:18,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-27 05:25:18,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-27 05:25:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-27 05:25:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-10-27 05:25:18,644 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 28 [2018-10-27 05:25:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:25:18,645 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-10-27 05:25:18,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:25:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-10-27 05:25:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-27 05:25:18,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:25:18,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:25:18,655 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:25:18,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:18,656 INFO L82 PathProgramCache]: Analyzing trace with hash 578252947, now seen corresponding path program 1 times [2018-10-27 05:25:18,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:25:18,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:18,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:25:18,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:18,658 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:25:18,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:25:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:25:19,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:25:19,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:25:19,062 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:25:19,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:25:19,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:25:19,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:25:19,065 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-10-27 05:25:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:25:22,872 INFO L93 Difference]: Finished difference Result 2358 states and 3741 transitions. [2018-10-27 05:25:22,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:25:22,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-10-27 05:25:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:25:22,886 INFO L225 Difference]: With dead ends: 2358 [2018-10-27 05:25:22,887 INFO L226 Difference]: Without dead ends: 1731 [2018-10-27 05:25:22,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:25:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-27 05:25:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-27 05:25:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-27 05:25:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2519 transitions. [2018-10-27 05:25:22,961 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2519 transitions. Word has length 141 [2018-10-27 05:25:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:25:22,962 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2519 transitions. [2018-10-27 05:25:22,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:25:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2519 transitions. [2018-10-27 05:25:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-27 05:25:22,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:25:22,972 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, 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] [2018-10-27 05:25:22,972 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:25:22,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:22,973 INFO L82 PathProgramCache]: Analyzing trace with hash -138677585, now seen corresponding path program 1 times [2018-10-27 05:25:22,973 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:25:22,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:22,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:25:22,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:22,974 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:25:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:25:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-27 05:25:23,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:25:23,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:25:23,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:25:23,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:25:23,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:25:23,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:25:23,296 INFO L87 Difference]: Start difference. First operand 1731 states and 2519 transitions. Second operand 4 states. [2018-10-27 05:25:26,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:25:26,289 INFO L93 Difference]: Finished difference Result 5832 states and 9044 transitions. [2018-10-27 05:25:26,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:25:26,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2018-10-27 05:25:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:25:26,330 INFO L225 Difference]: With dead ends: 5832 [2018-10-27 05:25:26,330 INFO L226 Difference]: Without dead ends: 4107 [2018-10-27 05:25:26,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:25:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2018-10-27 05:25:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 4107. [2018-10-27 05:25:26,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4107 states. [2018-10-27 05:25:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 5921 transitions. [2018-10-27 05:25:26,496 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 5921 transitions. Word has length 215 [2018-10-27 05:25:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:25:26,497 INFO L481 AbstractCegarLoop]: Abstraction has 4107 states and 5921 transitions. [2018-10-27 05:25:26,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:25:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 5921 transitions. [2018-10-27 05:25:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-27 05:25:26,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:25:26,508 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, 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, 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] [2018-10-27 05:25:26,508 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:25:26,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:26,508 INFO L82 PathProgramCache]: Analyzing trace with hash 801110427, now seen corresponding path program 1 times [2018-10-27 05:25:26,509 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:25:26,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:26,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:25:26,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:26,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:25:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:25:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:25:27,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:25:27,168 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:25:27,169 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-10-27 05:25:27,171 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:25:27,222 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:25:27,222 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:25:31,484 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:25:31,485 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:25:31,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:31,497 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:25:34,759 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 77.5% of their original sizes. [2018-10-27 05:25:34,759 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:25:34,920 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-10-27 05:25:34,921 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:25:34,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:25:34,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2018-10-27 05:25:34,925 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:25:34,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:25:34,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:25:34,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:25:34,926 INFO L87 Difference]: Start difference. First operand 4107 states and 5921 transitions. Second operand 6 states. [2018-10-27 05:25:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:25:46,376 INFO L93 Difference]: Finished difference Result 8393 states and 12078 transitions. [2018-10-27 05:25:46,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 05:25:46,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2018-10-27 05:25:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:25:46,407 INFO L225 Difference]: With dead ends: 8393 [2018-10-27 05:25:46,407 INFO L226 Difference]: Without dead ends: 4292 [2018-10-27 05:25:46,427 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 05:25:46,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2018-10-27 05:25:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4290. [2018-10-27 05:25:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4290 states. [2018-10-27 05:25:46,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 6112 transitions. [2018-10-27 05:25:46,541 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 6112 transitions. Word has length 241 [2018-10-27 05:25:46,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:25:46,542 INFO L481 AbstractCegarLoop]: Abstraction has 4290 states and 6112 transitions. [2018-10-27 05:25:46,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 05:25:46,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 6112 transitions. [2018-10-27 05:25:46,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-27 05:25:46,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:25:46,554 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, 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, 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] [2018-10-27 05:25:46,554 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:25:46,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash 2059096588, now seen corresponding path program 1 times [2018-10-27 05:25:46,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:25:46,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:46,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:25:46,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:25:46,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:25:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:25:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 151 proven. 177 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 05:25:47,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:25:47,732 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:25:47,732 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-10-27 05:25:47,733 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:25:47,738 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:25:47,738 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:25:51,746 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:25:51,746 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:25:51,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:25:51,753 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:25:53,922 INFO L227 lantSequenceWeakener]: Weakened 323 states. On average, predicates are now at 77.52% of their original sizes. [2018-10-27 05:25:53,923 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:25:54,269 INFO L415 sIntCurrentIteration]: We unified 325 AI predicates to 325 [2018-10-27 05:25:54,270 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:25:54,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:25:54,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-10-27 05:25:54,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:25:54,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:25:54,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:25:54,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:25:54,272 INFO L87 Difference]: Start difference. First operand 4290 states and 6112 transitions. Second operand 10 states. [2018-10-27 05:26:38,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:26:38,172 INFO L93 Difference]: Finished difference Result 9321 states and 13136 transitions. [2018-10-27 05:26:38,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 05:26:38,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 326 [2018-10-27 05:26:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:26:38,199 INFO L225 Difference]: With dead ends: 9321 [2018-10-27 05:26:38,199 INFO L226 Difference]: Without dead ends: 4850 [2018-10-27 05:26:38,218 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 334 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 05:26:38,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4850 states. [2018-10-27 05:26:38,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4850 to 4848. [2018-10-27 05:26:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4848 states. [2018-10-27 05:26:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 6728 transitions. [2018-10-27 05:26:38,335 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 6728 transitions. Word has length 326 [2018-10-27 05:26:38,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:26:38,335 INFO L481 AbstractCegarLoop]: Abstraction has 4848 states and 6728 transitions. [2018-10-27 05:26:38,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:26:38,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 6728 transitions. [2018-10-27 05:26:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-27 05:26:38,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:26:38,349 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:26:38,349 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:26:38,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:38,350 INFO L82 PathProgramCache]: Analyzing trace with hash 290855395, now seen corresponding path program 1 times [2018-10-27 05:26:38,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:26:38,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:38,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:26:38,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:26:38,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:26:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:26:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-10-27 05:26:39,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:26:39,154 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:26:39,155 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-10-27 05:26:39,155 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:26:39,169 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:26:39,169 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:26:39,354 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:26:39,354 INFO L272 AbstractInterpreter]: Visited 143 different actions 280 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 05:26:39,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:26:39,391 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:26:39,732 INFO L227 lantSequenceWeakener]: Weakened 370 states. On average, predicates are now at 77.49% of their original sizes. [2018-10-27 05:26:39,732 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:26:39,891 INFO L415 sIntCurrentIteration]: We unified 372 AI predicates to 372 [2018-10-27 05:26:39,891 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:26:39,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:26:39,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-10-27 05:26:39,892 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:26:39,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:26:39,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:26:39,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 05:26:39,893 INFO L87 Difference]: Start difference. First operand 4848 states and 6728 transitions. Second operand 10 states. [2018-10-27 05:27:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:27:02,418 INFO L93 Difference]: Finished difference Result 9137 states and 12863 transitions. [2018-10-27 05:27:02,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:27:02,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 373 [2018-10-27 05:27:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:27:02,438 INFO L225 Difference]: With dead ends: 9137 [2018-10-27 05:27:02,438 INFO L226 Difference]: Without dead ends: 4478 [2018-10-27 05:27:02,456 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 380 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 05:27:02,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4478 states. [2018-10-27 05:27:02,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4478 to 4475. [2018-10-27 05:27:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4475 states. [2018-10-27 05:27:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6294 transitions. [2018-10-27 05:27:02,560 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6294 transitions. Word has length 373 [2018-10-27 05:27:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:27:02,561 INFO L481 AbstractCegarLoop]: Abstraction has 4475 states and 6294 transitions. [2018-10-27 05:27:02,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:27:02,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6294 transitions. [2018-10-27 05:27:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2018-10-27 05:27:02,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:27:02,577 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:27:02,577 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:27:02,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:02,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1963815635, now seen corresponding path program 1 times [2018-10-27 05:27:02,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:27:02,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:02,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:02,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:02,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:27:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:02,899 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 05:27:03,248 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 232 proven. 332 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-27 05:27:03,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:27:03,248 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:27:03,249 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 454 with the following transitions: [2018-10-27 05:27:03,249 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [630], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:27:03,252 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:27:03,253 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:27:08,414 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:27:08,414 INFO L272 AbstractInterpreter]: Visited 121 different actions 362 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 05:27:08,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:08,429 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:27:09,315 INFO L227 lantSequenceWeakener]: Weakened 450 states. On average, predicates are now at 80.15% of their original sizes. [2018-10-27 05:27:09,316 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:27:09,412 INFO L415 sIntCurrentIteration]: We unified 452 AI predicates to 452 [2018-10-27 05:27:09,412 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:27:09,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:27:09,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 05:27:09,413 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:27:09,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 05:27:09,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 05:27:09,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:27:09,414 INFO L87 Difference]: Start difference. First operand 4475 states and 6294 transitions. Second operand 9 states. [2018-10-27 05:27:39,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:27:39,463 INFO L93 Difference]: Finished difference Result 10192 states and 14714 transitions. [2018-10-27 05:27:39,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 05:27:39,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 453 [2018-10-27 05:27:39,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:27:39,489 INFO L225 Difference]: With dead ends: 10192 [2018-10-27 05:27:39,489 INFO L226 Difference]: Without dead ends: 6091 [2018-10-27 05:27:39,510 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 459 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 05:27:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6091 states. [2018-10-27 05:27:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6091 to 6060. [2018-10-27 05:27:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6060 states. [2018-10-27 05:27:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 8232 transitions. [2018-10-27 05:27:39,644 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 8232 transitions. Word has length 453 [2018-10-27 05:27:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:27:39,645 INFO L481 AbstractCegarLoop]: Abstraction has 6060 states and 8232 transitions. [2018-10-27 05:27:39,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 05:27:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 8232 transitions. [2018-10-27 05:27:39,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-10-27 05:27:39,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:27:39,664 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:27:39,664 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:27:39,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:39,665 INFO L82 PathProgramCache]: Analyzing trace with hash -271769872, now seen corresponding path program 1 times [2018-10-27 05:27:39,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:27:39,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:39,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:39,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:27:39,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:27:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:41,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 425 proven. 437 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-10-27 05:27:41,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:27:41,192 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:27:41,193 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 537 with the following transitions: [2018-10-27 05:27:41,193 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:27:41,196 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:27:41,196 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:27:51,138 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:27:51,138 INFO L272 AbstractInterpreter]: Visited 125 different actions 496 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-10-27 05:27:51,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:27:51,143 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:27:51,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:27:51,144 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 [2018-10-27 05:27:51,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:27:51,154 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:27:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:27:51,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:27:52,115 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-27 05:27:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 486 proven. 2 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2018-10-27 05:27:52,450 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:27:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 486 proven. 2 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2018-10-27 05:27:53,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:27:53,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 21 [2018-10-27 05:27:53,369 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:27:53,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:27:53,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:27:53,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2018-10-27 05:27:53,371 INFO L87 Difference]: Start difference. First operand 6060 states and 8232 transitions. Second operand 18 states. [2018-10-27 05:27:54,737 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2018-10-27 05:27:59,215 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 27 [2018-10-27 05:28:01,788 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2018-10-27 05:28:06,153 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2018-10-27 05:28:06,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:06,616 INFO L93 Difference]: Finished difference Result 16438 states and 24880 transitions. [2018-10-27 05:28:06,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-27 05:28:06,617 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 536 [2018-10-27 05:28:06,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:06,662 INFO L225 Difference]: With dead ends: 16438 [2018-10-27 05:28:06,663 INFO L226 Difference]: Without dead ends: 9676 [2018-10-27 05:28:06,732 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1159 GetRequests, 1093 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=940, Invalid=3616, Unknown=0, NotChecked=0, Total=4556 [2018-10-27 05:28:06,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9676 states. [2018-10-27 05:28:06,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9676 to 8738. [2018-10-27 05:28:06,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8738 states. [2018-10-27 05:28:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8738 states to 8738 states and 10544 transitions. [2018-10-27 05:28:07,013 INFO L78 Accepts]: Start accepts. Automaton has 8738 states and 10544 transitions. Word has length 536 [2018-10-27 05:28:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:07,014 INFO L481 AbstractCegarLoop]: Abstraction has 8738 states and 10544 transitions. [2018-10-27 05:28:07,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 05:28:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 8738 states and 10544 transitions. [2018-10-27 05:28:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2018-10-27 05:28:07,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:07,038 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-10-27 05:28:07,038 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:07,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:07,039 INFO L82 PathProgramCache]: Analyzing trace with hash 368524383, now seen corresponding path program 1 times [2018-10-27 05:28:07,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:07,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:07,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:07,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:07,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:07,539 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 05:28:08,468 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 05:28:08,735 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:28:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 332 proven. 621 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2018-10-27 05:28:09,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:09,272 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:09,272 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 664 with the following transitions: [2018-10-27 05:28:09,273 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:09,276 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:09,276 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:15,108 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:28:15,109 INFO L272 AbstractInterpreter]: Visited 192 different actions 768 times. Merged at 10 different actions 36 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 05:28:15,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:15,116 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:28:15,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:15,116 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 [2018-10-27 05:28:15,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:15,126 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:28:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:15,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:28:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 842 proven. 2 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2018-10-27 05:28:15,918 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:28:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 479 proven. 99 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2018-10-27 05:28:16,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:28:16,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 17 [2018-10-27 05:28:16,613 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:28:16,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 05:28:16,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 05:28:16,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-10-27 05:28:16,615 INFO L87 Difference]: Start difference. First operand 8738 states and 10544 transitions. Second operand 15 states. [2018-10-27 05:28:22,063 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2018-10-27 05:28:23,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:23,088 INFO L93 Difference]: Finished difference Result 19029 states and 23533 transitions. [2018-10-27 05:28:23,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-27 05:28:23,088 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 663 [2018-10-27 05:28:23,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:23,119 INFO L225 Difference]: With dead ends: 19029 [2018-10-27 05:28:23,120 INFO L226 Difference]: Without dead ends: 10153 [2018-10-27 05:28:23,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1397 GetRequests, 1348 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=516, Invalid=1934, Unknown=0, NotChecked=0, Total=2450 [2018-10-27 05:28:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10153 states. [2018-10-27 05:28:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10153 to 10033. [2018-10-27 05:28:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10033 states. [2018-10-27 05:28:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10033 states to 10033 states and 11239 transitions. [2018-10-27 05:28:23,355 INFO L78 Accepts]: Start accepts. Automaton has 10033 states and 11239 transitions. Word has length 663 [2018-10-27 05:28:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:23,356 INFO L481 AbstractCegarLoop]: Abstraction has 10033 states and 11239 transitions. [2018-10-27 05:28:23,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 05:28:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 10033 states and 11239 transitions. [2018-10-27 05:28:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2018-10-27 05:28:23,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:23,370 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2018-10-27 05:28:23,370 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:23,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:23,371 INFO L82 PathProgramCache]: Analyzing trace with hash 955759823, now seen corresponding path program 1 times [2018-10-27 05:28:23,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:23,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:23,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:23,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:23,373 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 652 proven. 99 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2018-10-27 05:28:24,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:24,447 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:24,447 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 808 with the following transitions: [2018-10-27 05:28:24,448 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:24,451 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:24,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:30,011 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:28:30,011 INFO L272 AbstractInterpreter]: Visited 193 different actions 772 times. Merged at 10 different actions 36 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 6 different actions. Largest state had 24 variables. [2018-10-27 05:28:30,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:30,017 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:28:30,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:30,017 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 05:28:30,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:30,025 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:28:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:30,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:28:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 1110 proven. 2 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-10-27 05:28:30,811 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:28:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1795 backedges. 652 proven. 99 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2018-10-27 05:28:31,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:28:31,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 05:28:31,837 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:28:31,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 05:28:31,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 05:28:31,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 05:28:31,838 INFO L87 Difference]: Start difference. First operand 10033 states and 11239 transitions. Second operand 7 states. [2018-10-27 05:28:34,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:34,258 INFO L93 Difference]: Finished difference Result 23510 states and 26781 transitions. [2018-10-27 05:28:34,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 05:28:34,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 807 [2018-10-27 05:28:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:34,294 INFO L225 Difference]: With dead ends: 23510 [2018-10-27 05:28:34,295 INFO L226 Difference]: Without dead ends: 14069 [2018-10-27 05:28:34,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1631 GetRequests, 1617 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 05:28:34,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14069 states. [2018-10-27 05:28:34,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14069 to 13958. [2018-10-27 05:28:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13958 states. [2018-10-27 05:28:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13958 states to 13958 states and 15662 transitions. [2018-10-27 05:28:34,579 INFO L78 Accepts]: Start accepts. Automaton has 13958 states and 15662 transitions. Word has length 807 [2018-10-27 05:28:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:34,581 INFO L481 AbstractCegarLoop]: Abstraction has 13958 states and 15662 transitions. [2018-10-27 05:28:34,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 05:28:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13958 states and 15662 transitions. [2018-10-27 05:28:34,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2018-10-27 05:28:34,596 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:34,597 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2018-10-27 05:28:34,597 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:34,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:34,597 INFO L82 PathProgramCache]: Analyzing trace with hash -310219608, now seen corresponding path program 1 times [2018-10-27 05:28:34,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:34,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:34,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:34,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:34,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 502 proven. 150 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2018-10-27 05:28:35,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:35,986 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:35,986 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 885 with the following transitions: [2018-10-27 05:28:35,987 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:35,989 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:35,990 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:41,896 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:28:41,896 INFO L272 AbstractInterpreter]: Visited 194 different actions 779 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Found 13 fixpoints after 6 different actions. Largest state had 24 variables. [2018-10-27 05:28:41,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:41,902 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:28:41,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:41,902 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 [2018-10-27 05:28:41,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:41,911 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:28:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:42,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:28:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 1471 proven. 2 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2018-10-27 05:28:42,625 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:28:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 502 proven. 150 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2018-10-27 05:28:43,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:28:43,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-10-27 05:28:43,178 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:28:43,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 05:28:43,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 05:28:43,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-27 05:28:43,180 INFO L87 Difference]: Start difference. First operand 13958 states and 15662 transitions. Second operand 10 states. [2018-10-27 05:28:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:28:46,452 INFO L93 Difference]: Finished difference Result 28419 states and 31823 transitions. [2018-10-27 05:28:46,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 05:28:46,452 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 884 [2018-10-27 05:28:46,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:28:46,485 INFO L225 Difference]: With dead ends: 28419 [2018-10-27 05:28:46,485 INFO L226 Difference]: Without dead ends: 14835 [2018-10-27 05:28:46,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1801 GetRequests, 1776 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2018-10-27 05:28:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14835 states. [2018-10-27 05:28:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14835 to 14478. [2018-10-27 05:28:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14478 states. [2018-10-27 05:28:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14478 states to 14478 states and 15514 transitions. [2018-10-27 05:28:46,735 INFO L78 Accepts]: Start accepts. Automaton has 14478 states and 15514 transitions. Word has length 884 [2018-10-27 05:28:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:28:46,736 INFO L481 AbstractCegarLoop]: Abstraction has 14478 states and 15514 transitions. [2018-10-27 05:28:46,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 05:28:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 14478 states and 15514 transitions. [2018-10-27 05:28:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 896 [2018-10-27 05:28:46,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:28:46,750 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2018-10-27 05:28:46,750 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:28:46,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:46,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1389640845, now seen corresponding path program 1 times [2018-10-27 05:28:46,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:28:46,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:46,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:46,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:28:46,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:28:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:47,586 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:28:47,795 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 05:28:48,014 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 05:28:48,293 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-27 05:28:50,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 534 proven. 1104 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2018-10-27 05:28:50,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:50,202 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:28:50,202 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 896 with the following transitions: [2018-10-27 05:28:50,202 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [614], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 05:28:50,205 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:28:50,205 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:28:55,760 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 05:28:55,760 INFO L272 AbstractInterpreter]: Visited 193 different actions 775 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 5 different actions. Largest state had 24 variables. [2018-10-27 05:28:55,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:28:55,778 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 05:28:55,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:28:55,778 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 [2018-10-27 05:28:55,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:28:55,786 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 05:28:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:28:56,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 05:28:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 1635 proven. 2 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-10-27 05:28:57,172 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 05:28:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 528 proven. 348 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2018-10-27 05:28:58,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 05:28:58,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-10-27 05:28:58,755 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 05:28:58,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 05:28:58,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 05:28:58,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-10-27 05:28:58,757 INFO L87 Difference]: Start difference. First operand 14478 states and 15514 transitions. Second operand 18 states. [2018-10-27 05:29:00,759 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-10-27 05:29:01,500 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-10-27 05:29:01,848 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 Received shutdown request... [2018-10-27 05:29:04,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-27 05:29:04,777 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 05:29:04,783 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 05:29:04,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 05:29:04 BoogieIcfgContainer [2018-10-27 05:29:04,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 05:29:04,784 INFO L168 Benchmark]: Toolchain (without parser) took 234336.70 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -60.3 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-27 05:29:04,785 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-27 05:29:04,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 816.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-27 05:29:04,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 245.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:29:04,788 INFO L168 Benchmark]: Boogie Preprocessor took 121.27 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-27 05:29:04,788 INFO L168 Benchmark]: RCFGBuilder took 3569.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.2 MB). Peak memory consumption was 116.2 MB. Max. memory is 7.1 GB. [2018-10-27 05:29:04,789 INFO L168 Benchmark]: TraceAbstraction took 229572.98 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 599.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 05:29:04,794 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 816.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 245.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.27 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3569.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 116.2 MB). Peak memory consumption was 116.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229572.98 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 599.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 67). Cancelled while BasicCegarLoop was constructing difference of abstraction (14478states) and FLOYD_HOARE automaton (currently 30 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (22846 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 229.4s OverallTime, 12 OverallIterations, 8 TraceHistogramMax, 149.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1789 SDtfs, 23203 SDslu, 2841 SDs, 0 SdLazy, 26824 SolverSat, 4437 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.3s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 9265 GetRequests, 9009 SyntacticMatches, 6 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14478occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 46.6s AbstIntTime, 9 AbstIntIterations, 4 AbstIntStrong, 0.9971759086519069 AbsIntWeakeningRatio, 0.09215262778977681 AbsIntAvgWeakeningVarsNumRemoved, 16.03959683225342 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 1564 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 9347 NumberOfCodeBlocks, 9347 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 13110 ConstructedInterpolants, 0 QuantifiedInterpolants, 41323073 SizeOfPredicates, 25 NumberOfNonLiveVariables, 5464 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 22 InterpolantComputations, 3 PerfectInterpolantSequences, 23790/27422 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown