java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 13:02:53,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 13:02:53,471 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 13:02:53,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 13:02:53,485 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 13:02:53,486 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 13:02:53,487 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 13:02:53,489 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 13:02:53,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 13:02:53,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 13:02:53,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 13:02:53,493 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 13:02:53,494 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 13:02:53,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 13:02:53,496 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 13:02:53,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 13:02:53,497 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 13:02:53,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 13:02:53,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 13:02:53,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 13:02:53,504 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 13:02:53,505 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 13:02:53,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 13:02:53,508 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 13:02:53,508 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 13:02:53,509 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 13:02:53,510 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 13:02:53,511 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 13:02:53,512 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 13:02:53,513 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 13:02:53,513 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 13:02:53,514 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 13:02:53,514 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 13:02:53,514 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 13:02:53,516 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 13:02:53,516 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 13:02:53,517 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 13:02:53,547 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 13:02:53,548 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 13:02:53,548 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 13:02:53,549 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 13:02:53,549 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 13:02:53,549 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 13:02:53,549 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 13:02:53,549 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 13:02:53,550 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 13:02:53,550 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 13:02:53,550 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 13:02:53,550 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 13:02:53,551 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 13:02:53,551 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 13:02:53,551 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 13:02:53,552 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 13:02:53,552 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 13:02:53,552 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 13:02:53,552 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 13:02:53,552 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 13:02:53,552 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 13:02:53,553 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 13:02:53,553 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 13:02:53,553 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 13:02:53,553 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 13:02:53,553 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 13:02:53,554 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 13:02:53,554 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 13:02:53,554 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 13:02:53,554 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 13:02:53,554 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 13:02:53,555 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 13:02:53,555 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 13:02:53,555 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 13:02:53,601 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 13:02:53,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 13:02:53,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 13:02:53,625 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 13:02:53,625 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 13:02:53,626 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label30_true-unreach-call.c [2018-11-07 13:02:53,692 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd62c3ef/9fbfe485b0774feab9c6824b6a926615/FLAG639c77131 [2018-11-07 13:02:54,377 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 13:02:54,378 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label30_true-unreach-call.c [2018-11-07 13:02:54,405 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd62c3ef/9fbfe485b0774feab9c6824b6a926615/FLAG639c77131 [2018-11-07 13:02:54,424 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd62c3ef/9fbfe485b0774feab9c6824b6a926615 [2018-11-07 13:02:54,437 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 13:02:54,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 13:02:54,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 13:02:54,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 13:02:54,446 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 13:02:54,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:54" (1/1) ... [2018-11-07 13:02:54,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d73b804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:54, skipping insertion in model container [2018-11-07 13:02:54,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:02:54" (1/1) ... [2018-11-07 13:02:54,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 13:02:54,565 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 13:02:55,296 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:02:55,301 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 13:02:55,512 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 13:02:55,533 INFO L193 MainTranslator]: Completed translation [2018-11-07 13:02:55,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55 WrapperNode [2018-11-07 13:02:55,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 13:02:55,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 13:02:55,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 13:02:55,535 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 13:02:55,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... [2018-11-07 13:02:55,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... [2018-11-07 13:02:55,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 13:02:55,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 13:02:55,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 13:02:55,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 13:02:55,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... [2018-11-07 13:02:55,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... [2018-11-07 13:02:55,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... [2018-11-07 13:02:55,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... [2018-11-07 13:02:55,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... [2018-11-07 13:02:55,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... [2018-11-07 13:02:55,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... [2018-11-07 13:02:55,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 13:02:55,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 13:02:55,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 13:02:55,877 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 13:02:55,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 13:02:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 13:02:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 13:02:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 13:02:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 13:02:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 13:02:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 13:02:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 13:02:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 13:02:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 13:03:01,265 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 13:03:01,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:01 BoogieIcfgContainer [2018-11-07 13:03:01,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 13:03:01,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 13:03:01,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 13:03:01,276 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 13:03:01,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:02:54" (1/3) ... [2018-11-07 13:03:01,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724c0e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:01, skipping insertion in model container [2018-11-07 13:03:01,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:02:55" (2/3) ... [2018-11-07 13:03:01,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724c0e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:01, skipping insertion in model container [2018-11-07 13:03:01,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:01" (3/3) ... [2018-11-07 13:03:01,286 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label30_true-unreach-call.c [2018-11-07 13:03:01,298 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 13:03:01,310 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 13:03:01,329 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 13:03:01,385 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 13:03:01,385 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 13:03:01,386 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 13:03:01,386 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 13:03:01,386 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 13:03:01,386 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 13:03:01,386 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 13:03:01,386 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 13:03:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 13:03:01,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-07 13:03:01,468 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:03:01,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:03:01,472 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:03:01,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:03:01,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2108174465, now seen corresponding path program 1 times [2018-11-07 13:03:01,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:03:01,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:01,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:03:01,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:01,546 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:03:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:03:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:03:02,598 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:03:02,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:03:02,599 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:03:02,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:03:02,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:03:02,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:03:02,628 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 13:03:04,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:03:04,598 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-11-07 13:03:04,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:03:04,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2018-11-07 13:03:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:03:04,628 INFO L225 Difference]: With dead ends: 838 [2018-11-07 13:03:04,629 INFO L226 Difference]: Without dead ends: 524 [2018-11-07 13:03:04,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:03:04,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-11-07 13:03:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-11-07 13:03:04,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-07 13:03:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-11-07 13:03:04,753 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 182 [2018-11-07 13:03:04,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:03:04,754 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-11-07 13:03:04,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:03:04,755 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-11-07 13:03:04,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-07 13:03:04,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:03:04,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:03:04,763 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:03:04,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:03:04,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1443247960, now seen corresponding path program 1 times [2018-11-07 13:03:04,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:03:04,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:04,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:03:04,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:04,766 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:03:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:03:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:03:05,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:03:05,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 13:03:05,135 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:03:05,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 13:03:05,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 13:03:05,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 13:03:05,139 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-11-07 13:03:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:03:08,495 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-11-07 13:03:08,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 13:03:08,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-11-07 13:03:08,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:03:08,518 INFO L225 Difference]: With dead ends: 1581 [2018-11-07 13:03:08,518 INFO L226 Difference]: Without dead ends: 1065 [2018-11-07 13:03:08,523 INFO L604 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 [2018-11-07 13:03:08,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-11-07 13:03:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-11-07 13:03:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-07 13:03:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-11-07 13:03:08,595 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 192 [2018-11-07 13:03:08,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:03:08,595 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-11-07 13:03:08,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 13:03:08,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-11-07 13:03:08,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 13:03:08,603 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:03:08,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:03:08,603 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:03:08,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:03:08,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1778495237, now seen corresponding path program 1 times [2018-11-07 13:03:08,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:03:08,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:08,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:03:08,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:08,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:03:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:03:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:03:08,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:03:08,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:03:08,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:03:08,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:03:08,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:03:08,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:03:08,974 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-11-07 13:03:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:03:11,632 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-11-07 13:03:11,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:03:11,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2018-11-07 13:03:11,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:03:11,646 INFO L225 Difference]: With dead ends: 2887 [2018-11-07 13:03:11,646 INFO L226 Difference]: Without dead ends: 1870 [2018-11-07 13:03:11,651 INFO L604 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 [2018-11-07 13:03:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-11-07 13:03:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-11-07 13:03:11,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-11-07 13:03:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-11-07 13:03:11,706 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 195 [2018-11-07 13:03:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:03:11,707 INFO L480 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-11-07 13:03:11,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:03:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-11-07 13:03:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 13:03:11,715 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:03:11,715 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:03:11,716 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:03:11,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:03:11,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1213324138, now seen corresponding path program 1 times [2018-11-07 13:03:11,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:03:11,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:11,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:03:11,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:11,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:03:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:03:11,983 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:03:11,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:03:11,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 13:03:11,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:03:11,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 13:03:11,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 13:03:11,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 13:03:11,986 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-11-07 13:03:13,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:03:13,461 INFO L93 Difference]: Finished difference Result 5425 states and 9196 transitions. [2018-11-07 13:03:13,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 13:03:13,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2018-11-07 13:03:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:03:13,490 INFO L225 Difference]: With dead ends: 5425 [2018-11-07 13:03:13,490 INFO L226 Difference]: Without dead ends: 3566 [2018-11-07 13:03:13,501 INFO L604 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 [2018-11-07 13:03:13,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2018-11-07 13:03:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 3544. [2018-11-07 13:03:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2018-11-07 13:03:13,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 5788 transitions. [2018-11-07 13:03:13,625 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 5788 transitions. Word has length 215 [2018-11-07 13:03:13,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:03:13,625 INFO L480 AbstractCegarLoop]: Abstraction has 3544 states and 5788 transitions. [2018-11-07 13:03:13,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 13:03:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 5788 transitions. [2018-11-07 13:03:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 13:03:13,642 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:03:13,643 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 13:03:13,643 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:03:13,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:03:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash -647167813, now seen corresponding path program 1 times [2018-11-07 13:03:13,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:03:13,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:13,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:03:13,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:13,645 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:03:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:03:13,941 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 13:03:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:03:14,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 13:03:14,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 13:03:14,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:03:14,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 13:03:14,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 13:03:14,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 13:03:14,228 INFO L87 Difference]: Start difference. First operand 3544 states and 5788 transitions. Second operand 6 states. [2018-11-07 13:03:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:03:16,740 INFO L93 Difference]: Finished difference Result 7596 states and 12544 transitions. [2018-11-07 13:03:16,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 13:03:16,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2018-11-07 13:03:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:03:16,766 INFO L225 Difference]: With dead ends: 7596 [2018-11-07 13:03:16,766 INFO L226 Difference]: Without dead ends: 4058 [2018-11-07 13:03:16,783 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 13:03:16,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2018-11-07 13:03:16,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 3727. [2018-11-07 13:03:16,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3727 states. [2018-11-07 13:03:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3727 states to 3727 states and 5669 transitions. [2018-11-07 13:03:16,907 INFO L78 Accepts]: Start accepts. Automaton has 3727 states and 5669 transitions. Word has length 241 [2018-11-07 13:03:16,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:03:16,908 INFO L480 AbstractCegarLoop]: Abstraction has 3727 states and 5669 transitions. [2018-11-07 13:03:16,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 13:03:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3727 states and 5669 transitions. [2018-11-07 13:03:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-11-07 13:03:16,922 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:03:16,923 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:03:16,923 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:03:16,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:03:16,924 INFO L82 PathProgramCache]: Analyzing trace with hash 427925431, now seen corresponding path program 1 times [2018-11-07 13:03:16,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:03:16,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:16,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:03:16,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:03:16,925 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:03:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:03:17,491 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 13:03:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:03:17,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:03:17,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:03:17,728 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 255 with the following transitions: [2018-11-07 13:03:17,731 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [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], [240], [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], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [917], [919], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:03:17,829 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:03:17,832 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:03:36,785 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:03:36,787 INFO L272 AbstractInterpreter]: Visited 183 different actions 183 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 13:03:36,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:03:36,820 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 13:03:50,008 INFO L227 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 72.31% of their original sizes. [2018-11-07 13:03:50,008 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 13:03:50,622 INFO L415 sIntCurrentIteration]: We unified 253 AI predicates to 253 [2018-11-07 13:03:50,622 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 13:03:50,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 13:03:50,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 13:03:50,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 13:03:50,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 13:03:50,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 13:03:50,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-11-07 13:03:50,625 INFO L87 Difference]: Start difference. First operand 3727 states and 5669 transitions. Second operand 16 states. [2018-11-07 13:05:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 13:05:07,839 INFO L93 Difference]: Finished difference Result 7658 states and 11659 transitions. [2018-11-07 13:05:07,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 13:05:07,840 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 254 [2018-11-07 13:05:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 13:05:07,860 INFO L225 Difference]: With dead ends: 7658 [2018-11-07 13:05:07,860 INFO L226 Difference]: Without dead ends: 3937 [2018-11-07 13:05:07,870 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-11-07 13:05:07,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2018-11-07 13:05:07,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3935. [2018-11-07 13:05:07,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3935 states. [2018-11-07 13:05:07,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3935 states to 3935 states and 5887 transitions. [2018-11-07 13:05:07,982 INFO L78 Accepts]: Start accepts. Automaton has 3935 states and 5887 transitions. Word has length 254 [2018-11-07 13:05:07,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 13:05:07,982 INFO L480 AbstractCegarLoop]: Abstraction has 3935 states and 5887 transitions. [2018-11-07 13:05:07,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 13:05:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3935 states and 5887 transitions. [2018-11-07 13:05:08,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-07 13:05:08,006 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 13:05:08,007 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 13:05:08,007 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 13:05:08,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:05:08,008 INFO L82 PathProgramCache]: Analyzing trace with hash -837547636, now seen corresponding path program 1 times [2018-11-07 13:05:08,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 13:05:08,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:05:08,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 13:05:08,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 13:05:08,009 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 13:05:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 13:05:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 13:05:08,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 13:05:08,553 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 13:05:08,553 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-11-07 13:05:08,554 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [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], [240], [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], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [917], [919], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 13:05:08,563 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 13:05:08,564 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 13:06:42,860 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 13:06:42,860 INFO L272 AbstractInterpreter]: Visited 186 different actions 368 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 13:06:42,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 13:06:42,868 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown