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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 10:21:41,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 10:21:41,406 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 10:21:41,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 10:21:41,418 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 10:21:41,419 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 10:21:41,421 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 10:21:41,422 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 10:21:41,424 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 10:21:41,425 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 10:21:41,426 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 10:21:41,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 10:21:41,427 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 10:21:41,428 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 10:21:41,429 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 10:21:41,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 10:21:41,431 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 10:21:41,432 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 10:21:41,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 10:21:41,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 10:21:41,437 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 10:21:41,438 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 10:21:41,441 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 10:21:41,441 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 10:21:41,441 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 10:21:41,442 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 10:21:41,443 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 10:21:41,444 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 10:21:41,445 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 10:21:41,446 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 10:21:41,446 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 10:21:41,447 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 10:21:41,447 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 10:21:41,447 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 10:21:41,448 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 10:21:41,449 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 10:21:41,449 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 10:21:41,465 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 10:21:41,466 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 10:21:41,467 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 10:21:41,467 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 10:21:41,467 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 10:21:41,467 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 10:21:41,467 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 10:21:41,468 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 10:21:41,468 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 10:21:41,468 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 10:21:41,468 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 10:21:41,468 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 10:21:41,469 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 10:21:41,469 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 10:21:41,469 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 10:21:41,470 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 10:21:41,470 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 10:21:41,470 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 10:21:41,470 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 10:21:41,470 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 10:21:41,471 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 10:21:41,471 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 10:21:41,471 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 10:21:41,471 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 10:21:41,471 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 10:21:41,472 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 10:21:41,472 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 10:21:41,472 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 10:21:41,472 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 10:21:41,473 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 10:21:41,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 10:21:41,473 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 10:21:41,473 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 10:21:41,473 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 10:21:41,517 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 10:21:41,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 10:21:41,536 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 10:21:41,538 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 10:21:41,538 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 10:21:41,539 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c [2018-10-27 10:21:41,607 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ed2b6bf8f/c6e85075529f42778240fe52fb6ee6b8/FLAG1568ca023 [2018-10-27 10:21:42,319 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 10:21:42,320 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c [2018-10-27 10:21:42,339 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ed2b6bf8f/c6e85075529f42778240fe52fb6ee6b8/FLAG1568ca023 [2018-10-27 10:21:42,354 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ed2b6bf8f/c6e85075529f42778240fe52fb6ee6b8 [2018-10-27 10:21:42,366 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 10:21:42,368 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 10:21:42,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 10:21:42,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 10:21:42,376 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 10:21:42,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:21:42" (1/1) ... [2018-10-27 10:21:42,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:42, skipping insertion in model container [2018-10-27 10:21:42,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:21:42" (1/1) ... [2018-10-27 10:21:42,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 10:21:42,480 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 10:21:43,283 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 10:21:43,289 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 10:21:43,545 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 10:21:43,577 INFO L193 MainTranslator]: Completed translation [2018-10-27 10:21:43,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43 WrapperNode [2018-10-27 10:21:43,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 10:21:43,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 10:21:43,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 10:21:43,579 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 10:21:43,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (1/1) ... [2018-10-27 10:21:43,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (1/1) ... [2018-10-27 10:21:43,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 10:21:43,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 10:21:43,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 10:21:43,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 10:21:43,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (1/1) ... [2018-10-27 10:21:43,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (1/1) ... [2018-10-27 10:21:43,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (1/1) ... [2018-10-27 10:21:43,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (1/1) ... [2018-10-27 10:21:43,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (1/1) ... [2018-10-27 10:21:44,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (1/1) ... [2018-10-27 10:21:44,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (1/1) ... [2018-10-27 10:21:44,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 10:21:44,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 10:21:44,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 10:21:44,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 10:21:44,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (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 10:21:44,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 10:21:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 10:21:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 10:21:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 10:21:44,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 10:21:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 10:21:44,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 10:21:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 10:21:48,893 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 10:21:48,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:21:48 BoogieIcfgContainer [2018-10-27 10:21:48,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 10:21:48,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 10:21:48,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 10:21:48,899 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 10:21:48,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:21:42" (1/3) ... [2018-10-27 10:21:48,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:21:48, skipping insertion in model container [2018-10-27 10:21:48,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:43" (2/3) ... [2018-10-27 10:21:48,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:21:48, skipping insertion in model container [2018-10-27 10:21:48,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:21:48" (3/3) ... [2018-10-27 10:21:48,904 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label09_false-unreach-call.c [2018-10-27 10:21:48,915 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 10:21:48,924 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 10:21:48,943 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 10:21:48,985 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 10:21:48,986 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 10:21:48,986 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 10:21:48,986 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 10:21:48,986 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 10:21:48,986 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 10:21:48,987 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 10:21:48,987 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 10:21:49,019 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 10:21:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-27 10:21:49,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:21:49,039 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:49,041 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:21:49,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:21:49,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1379578932, now seen corresponding path program 1 times [2018-10-27 10:21:49,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:21:49,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:21:49,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:21:49,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:21:49,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:21:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:21:49,963 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 10:21:50,322 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 10:21:50,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:21:50,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 10:21:50,326 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:21:50,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 10:21:50,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 10:21:50,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 10:21:50,353 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 10:21:53,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:21:53,812 INFO L93 Difference]: Finished difference Result 1054 states and 1900 transitions. [2018-10-27 10:21:53,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 10:21:53,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-10-27 10:21:53,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:21:53,841 INFO L225 Difference]: With dead ends: 1054 [2018-10-27 10:21:53,841 INFO L226 Difference]: Without dead ends: 736 [2018-10-27 10:21:53,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 10:21:53,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-10-27 10:21:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 526. [2018-10-27 10:21:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-10-27 10:21:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2018-10-27 10:21:53,934 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 155 [2018-10-27 10:21:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:21:53,935 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2018-10-27 10:21:53,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 10:21:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2018-10-27 10:21:53,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-27 10:21:53,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:21:53,942 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 10:21:53,943 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:21:53,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:21:53,943 INFO L82 PathProgramCache]: Analyzing trace with hash -211363835, now seen corresponding path program 1 times [2018-10-27 10:21:53,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:21:53,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:21:53,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:21:53,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:21:53,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:21:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:21:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:21:54,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:21:54,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 10:21:54,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:21:54,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 10:21:54,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 10:21:54,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 10:21:54,338 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand 6 states. [2018-10-27 10:21:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:21:57,355 INFO L93 Difference]: Finished difference Result 1588 states and 2744 transitions. [2018-10-27 10:21:57,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 10:21:57,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-27 10:21:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:21:57,367 INFO L225 Difference]: With dead ends: 1588 [2018-10-27 10:21:57,367 INFO L226 Difference]: Without dead ends: 1068 [2018-10-27 10:21:57,371 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 10:21:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2018-10-27 10:21:57,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1025. [2018-10-27 10:21:57,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2018-10-27 10:21:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1721 transitions. [2018-10-27 10:21:57,452 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1721 transitions. Word has length 165 [2018-10-27 10:21:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:21:57,453 INFO L481 AbstractCegarLoop]: Abstraction has 1025 states and 1721 transitions. [2018-10-27 10:21:57,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 10:21:57,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1721 transitions. [2018-10-27 10:21:57,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-27 10:21:57,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:21:57,464 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 10:21:57,464 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:21:57,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:21:57,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1423519688, now seen corresponding path program 1 times [2018-10-27 10:21:57,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:21:57,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:21:57,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:21:57,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:21:57,466 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:21:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:21:57,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:21:57,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:21:57,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 10:21:57,848 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:21:57,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 10:21:57,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 10:21:57,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 10:21:57,850 INFO L87 Difference]: Start difference. First operand 1025 states and 1721 transitions. Second operand 3 states. [2018-10-27 10:22:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:22:00,575 INFO L93 Difference]: Finished difference Result 2908 states and 5067 transitions. [2018-10-27 10:22:00,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 10:22:00,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-10-27 10:22:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:22:00,592 INFO L225 Difference]: With dead ends: 2908 [2018-10-27 10:22:00,593 INFO L226 Difference]: Without dead ends: 1889 [2018-10-27 10:22:00,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 10:22:00,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2018-10-27 10:22:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1869. [2018-10-27 10:22:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2018-10-27 10:22:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 3142 transitions. [2018-10-27 10:22:00,683 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 3142 transitions. Word has length 168 [2018-10-27 10:22:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:22:00,683 INFO L481 AbstractCegarLoop]: Abstraction has 1869 states and 3142 transitions. [2018-10-27 10:22:00,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 10:22:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 3142 transitions. [2018-10-27 10:22:00,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-27 10:22:00,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:00,690 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 10:22:00,690 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:00,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:00,691 INFO L82 PathProgramCache]: Analyzing trace with hash 634374037, now seen corresponding path program 1 times [2018-10-27 10:22:00,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:00,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:00,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:00,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:00,692 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:22:00,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:22:00,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 10:22:00,920 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:22:00,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 10:22:00,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 10:22:00,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 10:22:00,922 INFO L87 Difference]: Start difference. First operand 1869 states and 3142 transitions. Second operand 6 states. [2018-10-27 10:22:03,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:22:03,950 INFO L93 Difference]: Finished difference Result 5741 states and 10710 transitions. [2018-10-27 10:22:03,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 10:22:03,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-10-27 10:22:03,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:22:03,989 INFO L225 Difference]: With dead ends: 5741 [2018-10-27 10:22:03,989 INFO L226 Difference]: Without dead ends: 3878 [2018-10-27 10:22:03,998 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 10:22:04,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2018-10-27 10:22:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3764. [2018-10-27 10:22:04,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3764 states. [2018-10-27 10:22:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 6536 transitions. [2018-10-27 10:22:04,169 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 6536 transitions. Word has length 173 [2018-10-27 10:22:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:22:04,170 INFO L481 AbstractCegarLoop]: Abstraction has 3764 states and 6536 transitions. [2018-10-27 10:22:04,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 10:22:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 6536 transitions. [2018-10-27 10:22:04,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-27 10:22:04,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:04,182 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:22:04,182 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:04,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:04,182 INFO L82 PathProgramCache]: Analyzing trace with hash 279397812, now seen corresponding path program 1 times [2018-10-27 10:22:04,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:04,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:04,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:04,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:04,184 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:04,397 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-10-27 10:22:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:22:04,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:22:04,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 10:22:04,614 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:22:04,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 10:22:04,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 10:22:04,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 10:22:04,615 INFO L87 Difference]: Start difference. First operand 3764 states and 6536 transitions. Second operand 7 states. [2018-10-27 10:22:06,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:22:06,713 INFO L93 Difference]: Finished difference Result 11468 states and 22298 transitions. [2018-10-27 10:22:06,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 10:22:06,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2018-10-27 10:22:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:22:06,778 INFO L225 Difference]: With dead ends: 11468 [2018-10-27 10:22:06,779 INFO L226 Difference]: Without dead ends: 7710 [2018-10-27 10:22:06,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-27 10:22:06,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2018-10-27 10:22:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 7523. [2018-10-27 10:22:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7523 states. [2018-10-27 10:22:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7523 states to 7523 states and 13613 transitions. [2018-10-27 10:22:07,096 INFO L78 Accepts]: Start accepts. Automaton has 7523 states and 13613 transitions. Word has length 174 [2018-10-27 10:22:07,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:22:07,097 INFO L481 AbstractCegarLoop]: Abstraction has 7523 states and 13613 transitions. [2018-10-27 10:22:07,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 10:22:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7523 states and 13613 transitions. [2018-10-27 10:22:07,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-27 10:22:07,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:07,122 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:22:07,122 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:07,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:07,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1038337502, now seen corresponding path program 1 times [2018-10-27 10:22:07,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:07,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:07,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:07,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:07,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:07,370 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 10:22:07,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:22:07,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:22:07,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 10:22:07,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:22:07,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 10:22:07,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 10:22:07,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 10:22:07,527 INFO L87 Difference]: Start difference. First operand 7523 states and 13613 transitions. Second operand 6 states. [2018-10-27 10:22:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:22:10,195 INFO L93 Difference]: Finished difference Result 23479 states and 46249 transitions. [2018-10-27 10:22:10,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 10:22:10,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-27 10:22:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:22:10,308 INFO L225 Difference]: With dead ends: 23479 [2018-10-27 10:22:10,308 INFO L226 Difference]: Without dead ends: 15962 [2018-10-27 10:22:10,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 10:22:10,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15962 states. [2018-10-27 10:22:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15962 to 15714. [2018-10-27 10:22:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15714 states. [2018-10-27 10:22:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15714 states to 15714 states and 27871 transitions. [2018-10-27 10:22:10,904 INFO L78 Accepts]: Start accepts. Automaton has 15714 states and 27871 transitions. Word has length 180 [2018-10-27 10:22:10,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:22:10,905 INFO L481 AbstractCegarLoop]: Abstraction has 15714 states and 27871 transitions. [2018-10-27 10:22:10,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 10:22:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 15714 states and 27871 transitions. [2018-10-27 10:22:10,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-27 10:22:10,953 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:10,953 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:22:10,954 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:10,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:10,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1657030729, now seen corresponding path program 1 times [2018-10-27 10:22:10,954 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:10,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:10,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:10,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:10,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:11,222 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 10:22:11,570 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 10:22:11,775 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 10:22:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 10:22:11,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:22:11,918 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:22:11,919 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 183 with the following transitions: [2018-10-27 10:22:11,922 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:22:11,987 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:22:11,988 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:22:13,329 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 10:22:13,331 INFO L272 AbstractInterpreter]: Visited 156 different actions 156 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 10:22:13,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:13,375 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 10:22:14,447 INFO L227 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 70.13% of their original sizes. [2018-10-27 10:22:14,447 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 10:22:15,981 INFO L415 sIntCurrentIteration]: We unified 181 AI predicates to 181 [2018-10-27 10:22:15,982 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 10:22:15,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 10:22:15,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-10-27 10:22:15,983 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:22:15,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 10:22:15,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 10:22:15,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2018-10-27 10:22:15,984 INFO L87 Difference]: Start difference. First operand 15714 states and 27871 transitions. Second operand 22 states. [2018-10-27 10:22:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:22:53,650 INFO L93 Difference]: Finished difference Result 31632 states and 56068 transitions. [2018-10-27 10:22:53,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 10:22:53,650 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 182 [2018-10-27 10:22:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:22:53,721 INFO L225 Difference]: With dead ends: 31632 [2018-10-27 10:22:53,721 INFO L226 Difference]: Without dead ends: 15924 [2018-10-27 10:22:53,764 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2018-10-27 10:22:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15924 states. [2018-10-27 10:22:54,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15924 to 15922. [2018-10-27 10:22:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15922 states. [2018-10-27 10:22:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 28089 transitions. [2018-10-27 10:22:54,159 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 28089 transitions. Word has length 182 [2018-10-27 10:22:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:22:54,159 INFO L481 AbstractCegarLoop]: Abstraction has 15922 states and 28089 transitions. [2018-10-27 10:22:54,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-27 10:22:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 28089 transitions. [2018-10-27 10:22:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-27 10:22:54,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:54,202 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-10-27 10:22:54,202 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:54,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:54,203 INFO L82 PathProgramCache]: Analyzing trace with hash 2081143308, now seen corresponding path program 1 times [2018-10-27 10:22:54,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:54,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:54,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:54,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:54,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 10:22:54,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:22:54,642 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:22:54,643 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-27 10:22:54,643 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:22:54,662 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:22:54,662 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:22:56,255 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 10:22:56,256 INFO L272 AbstractInterpreter]: Visited 160 different actions 316 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 10:22:56,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:56,263 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 10:22:57,457 INFO L227 lantSequenceWeakener]: Weakened 39 states. On average, predicates are now at 73.69% of their original sizes. [2018-10-27 10:22:57,458 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 10:23:00,315 INFO L415 sIntCurrentIteration]: We unified 193 AI predicates to 193 [2018-10-27 10:23:00,315 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 10:23:00,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 10:23:00,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [29] imperfect sequences [6] total 33 [2018-10-27 10:23:00,316 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:23:00,316 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-27 10:23:00,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-27 10:23:00,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2018-10-27 10:23:00,317 INFO L87 Difference]: Start difference. First operand 15922 states and 28089 transitions. Second operand 29 states. [2018-10-27 10:23:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:23:46,035 INFO L93 Difference]: Finished difference Result 32059 states and 56678 transitions. [2018-10-27 10:23:46,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-27 10:23:46,035 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 194 [2018-10-27 10:23:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:23:46,085 INFO L225 Difference]: With dead ends: 32059 [2018-10-27 10:23:46,086 INFO L226 Difference]: Without dead ends: 16351 [2018-10-27 10:23:46,112 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 209 GetRequests, 154 SyntacticMatches, 12 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=371, Invalid=1609, Unknown=0, NotChecked=0, Total=1980 [2018-10-27 10:23:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16351 states. [2018-10-27 10:23:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16351 to 16341. [2018-10-27 10:23:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16341 states. [2018-10-27 10:23:46,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16341 states to 16341 states and 28544 transitions. [2018-10-27 10:23:46,497 INFO L78 Accepts]: Start accepts. Automaton has 16341 states and 28544 transitions. Word has length 194 [2018-10-27 10:23:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:23:46,497 INFO L481 AbstractCegarLoop]: Abstraction has 16341 states and 28544 transitions. [2018-10-27 10:23:46,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-27 10:23:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 16341 states and 28544 transitions. [2018-10-27 10:23:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-27 10:23:46,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:23:46,539 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 10:23:46,539 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:23:46,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:46,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1733760794, now seen corresponding path program 1 times [2018-10-27 10:23:46,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:23:46,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:46,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:23:46,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:46,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:23:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:23:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:23:46,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:23:46,976 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:23:46,976 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-10-27 10:23:46,976 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:23:46,991 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:23:46,991 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:23:47,981 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 10:23:47,981 INFO L272 AbstractInterpreter]: Visited 159 different actions 311 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 10:23:47,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:47,987 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 10:23:48,916 INFO L227 lantSequenceWeakener]: Weakened 192 states. On average, predicates are now at 70.07% of their original sizes. [2018-10-27 10:23:48,917 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 10:23:49,215 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-10-27 10:23:49,216 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 10:23:49,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 10:23:49,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 10:23:49,217 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:23:49,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 10:23:49,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 10:23:49,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-27 10:23:49,219 INFO L87 Difference]: Start difference. First operand 16341 states and 28544 transitions. Second operand 18 states. [2018-10-27 10:24:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:24:15,906 INFO L93 Difference]: Finished difference Result 40295 states and 71417 transitions. [2018-10-27 10:24:15,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 10:24:15,906 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 195 [2018-10-27 10:24:15,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:24:15,981 INFO L225 Difference]: With dead ends: 40295 [2018-10-27 10:24:15,981 INFO L226 Difference]: Without dead ends: 24587 [2018-10-27 10:24:16,014 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 203 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2018-10-27 10:24:16,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24587 states. [2018-10-27 10:24:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24587 to 24578. [2018-10-27 10:24:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24578 states. [2018-10-27 10:24:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24578 states to 24578 states and 39156 transitions. [2018-10-27 10:24:16,548 INFO L78 Accepts]: Start accepts. Automaton has 24578 states and 39156 transitions. Word has length 195 [2018-10-27 10:24:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:24:16,549 INFO L481 AbstractCegarLoop]: Abstraction has 24578 states and 39156 transitions. [2018-10-27 10:24:16,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 10:24:16,549 INFO L276 IsEmpty]: Start isEmpty. Operand 24578 states and 39156 transitions. [2018-10-27 10:24:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-27 10:24:16,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:24:16,572 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:16,573 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:24:16,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:16,573 INFO L82 PathProgramCache]: Analyzing trace with hash -960690602, now seen corresponding path program 1 times [2018-10-27 10:24:16,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:24:16,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:16,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:16,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:16,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:24:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 10:24:16,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:24:16,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 10:24:16,875 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:24:16,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 10:24:16,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 10:24:16,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 10:24:16,876 INFO L87 Difference]: Start difference. First operand 24578 states and 39156 transitions. Second operand 3 states. [2018-10-27 10:24:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:24:19,541 INFO L93 Difference]: Finished difference Result 67522 states and 112612 transitions. [2018-10-27 10:24:19,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 10:24:19,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-10-27 10:24:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:24:19,676 INFO L225 Difference]: With dead ends: 67522 [2018-10-27 10:24:19,676 INFO L226 Difference]: Without dead ends: 43577 [2018-10-27 10:24:19,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 10:24:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43577 states. [2018-10-27 10:24:20,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43577 to 43523. [2018-10-27 10:24:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43523 states. [2018-10-27 10:24:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43523 states to 43523 states and 67718 transitions. [2018-10-27 10:24:20,738 INFO L78 Accepts]: Start accepts. Automaton has 43523 states and 67718 transitions. Word has length 203 [2018-10-27 10:24:20,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:24:20,739 INFO L481 AbstractCegarLoop]: Abstraction has 43523 states and 67718 transitions. [2018-10-27 10:24:20,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 10:24:20,739 INFO L276 IsEmpty]: Start isEmpty. Operand 43523 states and 67718 transitions. [2018-10-27 10:24:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-27 10:24:20,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:24:20,786 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:20,787 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:24:20,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:20,787 INFO L82 PathProgramCache]: Analyzing trace with hash 937800607, now seen corresponding path program 1 times [2018-10-27 10:24:20,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:24:20,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:20,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:20,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:20,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:24:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 10:24:21,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:24:21,000 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:24:21,000 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-10-27 10:24:21,001 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:24:21,006 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:24:21,007 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:24:23,672 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 10:24:23,672 INFO L272 AbstractInterpreter]: Visited 161 different actions 482 times. Merged at 7 different actions 23 times. Never widened. Found 4 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-27 10:24:23,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:23,674 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 10:24:23,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:24:23,674 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 10:24:23,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:23,684 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 10:24:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:23,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 10:24:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-27 10:24:24,065 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 10:24:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-27 10:24:24,651 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 10:24:24,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-27 10:24:24,652 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:24:24,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 10:24:24,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 10:24:24,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 10:24:24,655 INFO L87 Difference]: Start difference. First operand 43523 states and 67718 transitions. Second operand 3 states. [2018-10-27 10:24:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:24:28,753 INFO L93 Difference]: Finished difference Result 115947 states and 183083 transitions. [2018-10-27 10:24:28,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 10:24:28,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2018-10-27 10:24:28,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:24:29,171 INFO L225 Difference]: With dead ends: 115947 [2018-10-27 10:24:29,171 INFO L226 Difference]: Without dead ends: 73476 [2018-10-27 10:24:29,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 440 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 10:24:29,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73476 states. [2018-10-27 10:24:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73476 to 73160. [2018-10-27 10:24:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73160 states. [2018-10-27 10:24:31,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73160 states to 73160 states and 113537 transitions. [2018-10-27 10:24:31,920 INFO L78 Accepts]: Start accepts. Automaton has 73160 states and 113537 transitions. Word has length 221 [2018-10-27 10:24:31,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:24:31,921 INFO L481 AbstractCegarLoop]: Abstraction has 73160 states and 113537 transitions. [2018-10-27 10:24:31,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 10:24:31,921 INFO L276 IsEmpty]: Start isEmpty. Operand 73160 states and 113537 transitions. [2018-10-27 10:24:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-27 10:24:32,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:24:32,060 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 10:24:32,060 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:24:32,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:32,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1667073090, now seen corresponding path program 1 times [2018-10-27 10:24:32,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:24:32,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:32,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:32,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:32,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:24:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 10:24:32,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:24:32,655 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:24:32,656 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-27 10:24:32,656 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [182], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:24:32,663 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:24:32,664 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:24:35,174 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 10:24:35,175 INFO L272 AbstractInterpreter]: Visited 161 different actions 480 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 10:24:35,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:35,210 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 10:24:35,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:24:35,210 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 10:24:35,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:35,226 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 10:24:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:35,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 10:24:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 10:24:35,946 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 10:24:37,085 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 10:24:37,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 10:24:37,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 10:24:37,124 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 10:24:37,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 10:24:37,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 10:24:37,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-10-27 10:24:37,126 INFO L87 Difference]: Start difference. First operand 73160 states and 113537 transitions. Second operand 9 states. [2018-10-27 10:24:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:24:46,268 INFO L93 Difference]: Finished difference Result 146285 states and 263630 transitions. [2018-10-27 10:24:46,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-27 10:24:46,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 251 [2018-10-27 10:24:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:24:46,850 INFO L225 Difference]: With dead ends: 146285 [2018-10-27 10:24:46,850 INFO L226 Difference]: Without dead ends: 73758 [2018-10-27 10:24:47,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 527 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=404, Invalid=1576, Unknown=0, NotChecked=0, Total=1980 [2018-10-27 10:24:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73758 states. [2018-10-27 10:24:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73758 to 69019. [2018-10-27 10:24:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69019 states. [2018-10-27 10:24:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69019 states to 69019 states and 95467 transitions. [2018-10-27 10:24:51,270 INFO L78 Accepts]: Start accepts. Automaton has 69019 states and 95467 transitions. Word has length 251 [2018-10-27 10:24:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:24:51,271 INFO L481 AbstractCegarLoop]: Abstraction has 69019 states and 95467 transitions. [2018-10-27 10:24:51,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 10:24:51,271 INFO L276 IsEmpty]: Start isEmpty. Operand 69019 states and 95467 transitions. [2018-10-27 10:24:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-27 10:24:51,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:24:51,352 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:24:51,352 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:24:51,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:51,353 INFO L82 PathProgramCache]: Analyzing trace with hash -678867104, now seen corresponding path program 1 times [2018-10-27 10:24:51,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:24:51,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:51,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:51,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:51,354 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:24:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:51,975 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 10:24:52,172 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 10:24:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 10:24:52,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:24:52,274 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:24:52,274 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-10-27 10:24:52,275 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [378], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:24:52,279 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:24:52,279 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:24:54,073 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 10:24:54,073 INFO L272 AbstractInterpreter]: Visited 161 different actions 477 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 10:24:54,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:54,080 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 10:24:54,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:24:54,080 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 10:24:54,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:54,088 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 10:24:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:54,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 10:24:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 10:24:54,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 10:24:54,893 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 10:24:55,631 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 10:24:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 10:24:55,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 10:24:55,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-10-27 10:24:55,885 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 10:24:55,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 10:24:55,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 10:24:55,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-10-27 10:24:55,887 INFO L87 Difference]: Start difference. First operand 69019 states and 95467 transitions. Second operand 10 states. [2018-10-27 10:25:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:25:04,636 INFO L93 Difference]: Finished difference Result 255589 states and 375965 transitions. [2018-10-27 10:25:04,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-27 10:25:04,636 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 270 [2018-10-27 10:25:04,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:25:05,347 INFO L225 Difference]: With dead ends: 255589 [2018-10-27 10:25:05,347 INFO L226 Difference]: Without dead ends: 187801 [2018-10-27 10:25:05,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=469, Invalid=1981, Unknown=0, NotChecked=0, Total=2450 [2018-10-27 10:25:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187801 states. [2018-10-27 10:25:12,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187801 to 181858. [2018-10-27 10:25:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181858 states. [2018-10-27 10:25:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181858 states to 181858 states and 237527 transitions. [2018-10-27 10:25:12,638 INFO L78 Accepts]: Start accepts. Automaton has 181858 states and 237527 transitions. Word has length 270 [2018-10-27 10:25:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:25:12,638 INFO L481 AbstractCegarLoop]: Abstraction has 181858 states and 237527 transitions. [2018-10-27 10:25:12,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 10:25:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 181858 states and 237527 transitions. [2018-10-27 10:25:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-27 10:25:12,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:25:12,737 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:12,737 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:25:12,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:25:12,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1280463036, now seen corresponding path program 1 times [2018-10-27 10:25:12,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:25:12,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:25:12,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:25:12,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:25:12,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:25:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:25:13,420 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 10:25:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:25:13,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:25:13,551 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:25:13,551 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 335 with the following transitions: [2018-10-27 10:25:13,552 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [318], [322], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:25:13,556 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:25:13,556 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 10:25:14,365 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 10:25:14,366 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 10:25:14,366 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 10:25:14,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:25:14,366 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) [2018-10-27 10:25:14,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:25:14,376 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 10:25:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:25:14,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 10:25:14,623 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 10:25:14,824 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 10:25:14,824 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 10:25:14,829 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 10:25:14,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 10:25:14 BoogieIcfgContainer [2018-10-27 10:25:14,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 10:25:14,830 INFO L168 Benchmark]: Toolchain (without parser) took 212463.86 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 890.3 MB. Max. memory is 7.1 GB. [2018-10-27 10:25:14,832 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 10:25:14,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1208.60 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 10:25:14,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 301.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.9 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -899.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-27 10:25:14,837 INFO L168 Benchmark]: Boogie Preprocessor took 151.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 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 10:25:14,838 INFO L168 Benchmark]: RCFGBuilder took 4861.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 251.9 MB). Peak memory consumption was 251.9 MB. Max. memory is 7.1 GB. [2018-10-27 10:25:14,838 INFO L168 Benchmark]: TraceAbstraction took 205934.72 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 664.6 MB. Max. memory is 7.1 GB. [2018-10-27 10:25:14,854 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1208.60 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 301.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.9 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -899.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.13 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 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 4861.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 251.9 MB). Peak memory consumption was 251.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205934.72 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.7 GB in the end (delta: -1.7 GB). Peak memory consumption was 664.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1479]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1479). Cancelled while BasicCegarLoop was analyzing trace of length 335 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 205.8s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 155.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3128 SDtfs, 19341 SDslu, 4348 SDs, 0 SdLazy, 25299 SolverSat, 5068 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2288 GetRequests, 2048 SyntacticMatches, 21 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181858occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.9s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.9987285164752057 AbsIntWeakeningRatio, 0.3380281690140845 AbsIntAvgWeakeningVarsNumRemoved, 53.603873239436616 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 17.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 11895 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.4s InterpolantComputationTime, 3273 NumberOfCodeBlocks, 3273 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3996 ConstructedInterpolants, 0 QuantifiedInterpolants, 2867398 SizeOfPredicates, 3 NumberOfNonLiveVariables, 3662 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 1404/1434 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown