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/Problem16_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:19:53,384 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:19:53,389 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:19:53,405 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:19:53,405 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:19:53,406 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:19:53,407 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:19:53,409 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:19:53,411 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:19:53,412 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:19:53,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:19:53,413 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:19:53,414 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:19:53,415 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:19:53,416 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:19:53,417 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:19:53,418 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:19:53,420 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:19:53,422 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:19:53,423 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:19:53,425 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:19:53,426 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:19:53,428 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:19:53,429 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:19:53,429 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:19:53,430 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:19:53,434 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:19:53,435 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:19:53,437 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:19:53,438 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:19:53,438 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:19:53,440 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 08:19:53,442 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 08:19:53,457 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:19:53,458 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:19:53,459 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:19:53,459 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:19:53,459 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:19:53,459 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:19:53,459 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:19:53,460 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:19:53,460 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:19:53,460 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:19:53,460 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:19:53,460 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:19:53,461 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:19:53,461 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:19:53,462 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:19:53,462 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:19:53,462 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:19:53,462 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:19:53,462 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:19:53,463 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:19:53,463 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:19:53,463 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:19:53,463 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:19:53,463 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:19:53,464 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:19:53,464 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:19:53,464 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:19:53,464 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:19:53,464 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:19:53,464 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:19:53,465 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:19:53,465 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:19:53,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:19:53,465 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:19:53,465 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:19:53,466 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:19:53,521 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:19:53,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:19:53,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:19:53,542 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:19:53,542 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:19:53,543 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label19_true-unreach-call.c [2018-10-27 08:19:53,604 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d13ab4865/fb279d044e714dc3a91c9e58d795fd65/FLAG799ab9b33 [2018-10-27 08:19:54,281 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:19:54,283 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label19_true-unreach-call.c [2018-10-27 08:19:54,306 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d13ab4865/fb279d044e714dc3a91c9e58d795fd65/FLAG799ab9b33 [2018-10-27 08:19:54,326 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d13ab4865/fb279d044e714dc3a91c9e58d795fd65 [2018-10-27 08:19:54,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:19:54,341 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:19:54,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:19:54,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:19:54,348 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:19:54,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:19:54" (1/1) ... [2018-10-27 08:19:54,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b792d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:54, skipping insertion in model container [2018-10-27 08:19:54,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:19:54" (1/1) ... [2018-10-27 08:19:54,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:19:54,461 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:19:55,422 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:19:55,427 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:19:55,631 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:19:55,653 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:19:55,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55 WrapperNode [2018-10-27 08:19:55,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:19:55,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:19:55,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:19:55,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:19:55,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (1/1) ... [2018-10-27 08:19:55,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (1/1) ... [2018-10-27 08:19:56,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:19:56,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:19:56,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:19:56,005 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:19:56,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (1/1) ... [2018-10-27 08:19:56,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (1/1) ... [2018-10-27 08:19:56,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (1/1) ... [2018-10-27 08:19:56,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (1/1) ... [2018-10-27 08:19:56,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (1/1) ... [2018-10-27 08:19:56,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (1/1) ... [2018-10-27 08:19:56,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (1/1) ... [2018-10-27 08:19:56,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:19:56,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:19:56,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:19:56,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:19:56,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (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 08:19:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:19:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:19:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:19:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:19:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:19:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:19:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:19:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:19:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:19:56,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:20:03,516 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:20:03,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:20:03 BoogieIcfgContainer [2018-10-27 08:20:03,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:20:03,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:20:03,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:20:03,522 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:20:03,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:19:54" (1/3) ... [2018-10-27 08:20:03,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f9bd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:20:03, skipping insertion in model container [2018-10-27 08:20:03,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:55" (2/3) ... [2018-10-27 08:20:03,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f9bd35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:20:03, skipping insertion in model container [2018-10-27 08:20:03,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:20:03" (3/3) ... [2018-10-27 08:20:03,525 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label19_true-unreach-call.c [2018-10-27 08:20:03,534 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:20:03,542 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:20:03,559 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:20:03,600 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:20:03,601 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:20:03,601 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:20:03,601 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:20:03,601 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:20:03,601 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:20:03,601 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:20:03,602 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:20:03,635 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 08:20:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-27 08:20:03,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:03,646 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:20:03,648 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:03,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:03,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1096400812, now seen corresponding path program 1 times [2018-10-27 08:20:03,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:03,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:03,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:03,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:03,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:04,120 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 08:20:04,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:04,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:20:04,124 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:04,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:20:04,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:20:04,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:20:04,149 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 08:20:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:10,236 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 08:20:10,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:20:10,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-27 08:20:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:10,270 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 08:20:10,271 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 08:20:10,280 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 08:20:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 08:20:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-10-27 08:20:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 08:20:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1357 transitions. [2018-10-27 08:20:10,410 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1357 transitions. Word has length 50 [2018-10-27 08:20:10,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:10,411 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1357 transitions. [2018-10-27 08:20:10,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:20:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1357 transitions. [2018-10-27 08:20:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-27 08:20:10,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:10,419 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:10,419 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:10,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:10,420 INFO L82 PathProgramCache]: Analyzing trace with hash -214706174, now seen corresponding path program 1 times [2018-10-27 08:20:10,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:10,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:10,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:10,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:10,421 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:10,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:10,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:20:10,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:10,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:20:10,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:20:10,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:20:10,698 INFO L87 Difference]: Start difference. First operand 744 states and 1357 transitions. Second operand 5 states. [2018-10-27 08:20:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:17,819 INFO L93 Difference]: Finished difference Result 2196 states and 4092 transitions. [2018-10-27 08:20:17,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:20:17,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-10-27 08:20:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:17,835 INFO L225 Difference]: With dead ends: 2196 [2018-10-27 08:20:17,835 INFO L226 Difference]: Without dead ends: 1458 [2018-10-27 08:20:17,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:20:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-10-27 08:20:17,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-10-27 08:20:17,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-10-27 08:20:17,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2551 transitions. [2018-10-27 08:20:17,914 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2551 transitions. Word has length 120 [2018-10-27 08:20:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:17,915 INFO L481 AbstractCegarLoop]: Abstraction has 1438 states and 2551 transitions. [2018-10-27 08:20:17,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:20:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2551 transitions. [2018-10-27 08:20:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-27 08:20:17,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:17,922 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:17,922 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:17,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:17,926 INFO L82 PathProgramCache]: Analyzing trace with hash 668921751, now seen corresponding path program 1 times [2018-10-27 08:20:17,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:17,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:17,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:17,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:17,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:18,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:18,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:20:18,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:18,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:20:18,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:20:18,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:20:18,261 INFO L87 Difference]: Start difference. First operand 1438 states and 2551 transitions. Second operand 6 states. [2018-10-27 08:20:25,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:25,205 INFO L93 Difference]: Finished difference Result 4237 states and 7540 transitions. [2018-10-27 08:20:25,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:20:25,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-27 08:20:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:25,225 INFO L225 Difference]: With dead ends: 4237 [2018-10-27 08:20:25,226 INFO L226 Difference]: Without dead ends: 2805 [2018-10-27 08:20:25,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:20:25,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2018-10-27 08:20:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2785. [2018-10-27 08:20:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2018-10-27 08:20:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4352 transitions. [2018-10-27 08:20:25,320 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4352 transitions. Word has length 123 [2018-10-27 08:20:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:25,321 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states and 4352 transitions. [2018-10-27 08:20:25,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4352 transitions. [2018-10-27 08:20:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-27 08:20:25,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:25,324 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:25,324 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:25,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash -575505094, now seen corresponding path program 1 times [2018-10-27 08:20:25,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:25,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:25,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:25,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:25,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:25,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:25,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:20:25,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:25,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:20:25,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:20:25,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:20:25,501 INFO L87 Difference]: Start difference. First operand 2785 states and 4352 transitions. Second operand 6 states. [2018-10-27 08:20:30,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:30,593 INFO L93 Difference]: Finished difference Result 6952 states and 11048 transitions. [2018-10-27 08:20:30,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:20:30,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-27 08:20:30,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:30,622 INFO L225 Difference]: With dead ends: 6952 [2018-10-27 08:20:30,623 INFO L226 Difference]: Without dead ends: 4173 [2018-10-27 08:20:30,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:20:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2018-10-27 08:20:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4153. [2018-10-27 08:20:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2018-10-27 08:20:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5896 transitions. [2018-10-27 08:20:30,767 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5896 transitions. Word has length 124 [2018-10-27 08:20:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:30,767 INFO L481 AbstractCegarLoop]: Abstraction has 4153 states and 5896 transitions. [2018-10-27 08:20:30,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5896 transitions. [2018-10-27 08:20:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 08:20:30,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:30,770 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:30,770 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:30,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:30,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1067040591, now seen corresponding path program 1 times [2018-10-27 08:20:30,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:30,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:30,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:30,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:30,772 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:30,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:30,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:20:30,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:30,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:20:30,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:20:30,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:20:30,951 INFO L87 Difference]: Start difference. First operand 4153 states and 5896 transitions. Second operand 6 states. [2018-10-27 08:20:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:35,346 INFO L93 Difference]: Finished difference Result 11374 states and 16767 transitions. [2018-10-27 08:20:35,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:20:35,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-27 08:20:35,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:35,394 INFO L225 Difference]: With dead ends: 11374 [2018-10-27 08:20:35,394 INFO L226 Difference]: Without dead ends: 7227 [2018-10-27 08:20:35,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:20:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2018-10-27 08:20:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7152. [2018-10-27 08:20:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7152 states. [2018-10-27 08:20:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 9826 transitions. [2018-10-27 08:20:35,653 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 9826 transitions. Word has length 127 [2018-10-27 08:20:35,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:35,654 INFO L481 AbstractCegarLoop]: Abstraction has 7152 states and 9826 transitions. [2018-10-27 08:20:35,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:35,654 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 9826 transitions. [2018-10-27 08:20:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-27 08:20:35,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:35,658 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:35,658 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:35,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:35,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1217167681, now seen corresponding path program 1 times [2018-10-27 08:20:35,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:35,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:35,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:35,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:35,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:35,931 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:20:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:36,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:36,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:20:36,330 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:36,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:20:36,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:20:36,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:20:36,331 INFO L87 Difference]: Start difference. First operand 7152 states and 9826 transitions. Second operand 6 states. [2018-10-27 08:20:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:42,108 INFO L93 Difference]: Finished difference Result 17771 states and 25546 transitions. [2018-10-27 08:20:42,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:20:42,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-27 08:20:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:42,162 INFO L225 Difference]: With dead ends: 17771 [2018-10-27 08:20:42,163 INFO L226 Difference]: Without dead ends: 10625 [2018-10-27 08:20:42,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:20:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10625 states. [2018-10-27 08:20:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10625 to 10585. [2018-10-27 08:20:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10585 states. [2018-10-27 08:20:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 13819 transitions. [2018-10-27 08:20:42,613 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 13819 transitions. Word has length 135 [2018-10-27 08:20:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:42,613 INFO L481 AbstractCegarLoop]: Abstraction has 10585 states and 13819 transitions. [2018-10-27 08:20:42,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 13819 transitions. [2018-10-27 08:20:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-27 08:20:42,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:42,618 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:42,619 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:42,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:42,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1713053514, now seen corresponding path program 1 times [2018-10-27 08:20:42,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:42,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:42,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:42,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:42,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:42,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:42,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:20:42,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:42,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:20:42,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:20:42,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:20:42,838 INFO L87 Difference]: Start difference. First operand 10585 states and 13819 transitions. Second operand 4 states. [2018-10-27 08:20:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:47,429 INFO L93 Difference]: Finished difference Result 22178 states and 28983 transitions. [2018-10-27 08:20:47,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:20:47,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-10-27 08:20:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:47,465 INFO L225 Difference]: With dead ends: 22178 [2018-10-27 08:20:47,466 INFO L226 Difference]: Without dead ends: 8917 [2018-10-27 08:20:47,513 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 08:20:47,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8917 states. [2018-10-27 08:20:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8917 to 8917. [2018-10-27 08:20:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8917 states. [2018-10-27 08:20:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8917 states to 8917 states and 9927 transitions. [2018-10-27 08:20:47,665 INFO L78 Accepts]: Start accepts. Automaton has 8917 states and 9927 transitions. Word has length 142 [2018-10-27 08:20:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:47,665 INFO L481 AbstractCegarLoop]: Abstraction has 8917 states and 9927 transitions. [2018-10-27 08:20:47,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:20:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8917 states and 9927 transitions. [2018-10-27 08:20:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2018-10-27 08:20:47,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:47,689 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:20:47,689 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:47,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:47,689 INFO L82 PathProgramCache]: Analyzing trace with hash -593629262, now seen corresponding path program 1 times [2018-10-27 08:20:47,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:47,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:47,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:47,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:47,691 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 248 proven. 115 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-27 08:20:48,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:48,357 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:20:48,358 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 599 with the following transitions: [2018-10-27 08:20:48,362 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [179], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [479], [481], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1489], [1493], [1497], [1501], [1505], [1509], [1513], [1517], [1521], [1525], [1529], [1533], [1537], [1541], [1545], [1549], [1551], [1552], [1556], [1560], [1566], [1570], [1572], [1577], [1578], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:20:48,433 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:20:48,434 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:20:49,407 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:20:49,409 INFO L272 AbstractInterpreter]: Visited 305 different actions 305 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:20:49,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:49,453 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:20:50,548 INFO L227 lantSequenceWeakener]: Weakened 583 states. On average, predicates are now at 77.55% of their original sizes. [2018-10-27 08:20:50,549 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:20:51,021 INFO L415 sIntCurrentIteration]: We unified 597 AI predicates to 597 [2018-10-27 08:20:51,022 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:20:51,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:20:51,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-27 08:20:51,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:51,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 08:20:51,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 08:20:51,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:20:51,025 INFO L87 Difference]: Start difference. First operand 8917 states and 9927 transitions. Second operand 8 states. [2018-10-27 08:21:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:21:37,508 INFO L93 Difference]: Finished difference Result 18168 states and 20208 transitions. [2018-10-27 08:21:37,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:21:37,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 598 [2018-10-27 08:21:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:21:37,534 INFO L225 Difference]: With dead ends: 18168 [2018-10-27 08:21:37,534 INFO L226 Difference]: Without dead ends: 9257 [2018-10-27 08:21:37,551 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 599 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:21:37,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9257 states. [2018-10-27 08:21:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9257 to 9255. [2018-10-27 08:21:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9255 states. [2018-10-27 08:21:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9255 states to 9255 states and 10268 transitions. [2018-10-27 08:21:37,721 INFO L78 Accepts]: Start accepts. Automaton has 9255 states and 10268 transitions. Word has length 598 [2018-10-27 08:21:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:21:37,722 INFO L481 AbstractCegarLoop]: Abstraction has 9255 states and 10268 transitions. [2018-10-27 08:21:37,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 08:21:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9255 states and 10268 transitions. [2018-10-27 08:21:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2018-10-27 08:21:37,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:21:37,767 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:21:37,768 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:21:37,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:37,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1699392556, now seen corresponding path program 1 times [2018-10-27 08:21:37,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:21:37,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:37,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:37,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:37,770 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:21:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 415 proven. 115 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-10-27 08:21:39,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:39,052 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:21:39,053 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 839 with the following transitions: [2018-10-27 08:21:39,053 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [179], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [479], [481], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1489], [1493], [1497], [1501], [1505], [1509], [1513], [1517], [1521], [1525], [1529], [1533], [1537], [1541], [1545], [1549], [1551], [1552], [1556], [1560], [1566], [1570], [1572], [1577], [1578], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:21:39,064 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:21:39,065 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:21:40,013 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:21:40,013 INFO L272 AbstractInterpreter]: Visited 313 different actions 1240 times. Merged at 9 different actions 32 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:21:40,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:40,019 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:21:40,019 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:40,019 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 08:21:40,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:40,029 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:21:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:40,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:21:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 847 proven. 2 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-10-27 08:21:41,107 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:21:41,434 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 08:21:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 415 proven. 115 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-10-27 08:21:42,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:21:42,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:21:42,469 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:21:42,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:21:42,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:21:42,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:21:42,472 INFO L87 Difference]: Start difference. First operand 9255 states and 10268 transitions. Second operand 9 states. [2018-10-27 08:21:49,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:21:49,584 INFO L93 Difference]: Finished difference Result 25109 states and 29073 transitions. [2018-10-27 08:21:49,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 08:21:49,586 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 838 [2018-10-27 08:21:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:21:49,662 INFO L225 Difference]: With dead ends: 25109 [2018-10-27 08:21:49,663 INFO L226 Difference]: Without dead ends: 16198 [2018-10-27 08:21:49,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1697 GetRequests, 1679 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2018-10-27 08:21:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16198 states. [2018-10-27 08:21:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16198 to 15801. [2018-10-27 08:21:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15801 states. [2018-10-27 08:21:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15801 states to 15801 states and 17620 transitions. [2018-10-27 08:21:50,218 INFO L78 Accepts]: Start accepts. Automaton has 15801 states and 17620 transitions. Word has length 838 [2018-10-27 08:21:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:21:50,219 INFO L481 AbstractCegarLoop]: Abstraction has 15801 states and 17620 transitions. [2018-10-27 08:21:50,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:21:50,220 INFO L276 IsEmpty]: Start isEmpty. Operand 15801 states and 17620 transitions. [2018-10-27 08:21:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1182 [2018-10-27 08:21:50,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:21:50,301 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:21:50,302 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:21:50,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:50,303 INFO L82 PathProgramCache]: Analyzing trace with hash 716676815, now seen corresponding path program 1 times [2018-10-27 08:21:50,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:21:50,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:50,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:50,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:50,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:21:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:51,592 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 08:21:52,157 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-27 08:21:52,510 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-27 08:21:52,735 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:21:53,399 WARN L179 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2018-10-27 08:21:54,191 WARN L179 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2018-10-27 08:21:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2105 backedges. 248 proven. 1360 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2018-10-27 08:21:56,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:56,616 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:21:56,617 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1182 with the following transitions: [2018-10-27 08:21:56,617 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [179], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [479], [481], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [964], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1176], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1392], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1489], [1493], [1497], [1501], [1505], [1509], [1513], [1517], [1521], [1525], [1529], [1533], [1537], [1541], [1545], [1549], [1551], [1552], [1556], [1560], [1566], [1570], [1572], [1577], [1578], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:21:56,627 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:21:56,627 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:21:57,517 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:21:57,518 INFO L272 AbstractInterpreter]: Visited 310 different actions 614 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 08:21:57,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:57,556 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:21:58,728 INFO L227 lantSequenceWeakener]: Weakened 1175 states. On average, predicates are now at 77.45% of their original sizes. [2018-10-27 08:21:58,728 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:21:59,309 INFO L415 sIntCurrentIteration]: We unified 1180 AI predicates to 1180 [2018-10-27 08:21:59,309 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:21:59,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:21:59,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2018-10-27 08:21:59,310 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:21:59,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 08:21:59,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 08:21:59,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-10-27 08:21:59,311 INFO L87 Difference]: Start difference. First operand 15801 states and 17620 transitions. Second operand 12 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown