java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:22:36,415 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:22:36,417 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:22:36,430 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:22:36,431 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:22:36,432 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:22:36,433 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:22:36,435 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:22:36,436 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:22:36,437 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:22:36,438 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:22:36,439 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:22:36,439 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:22:36,440 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:22:36,442 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:22:36,443 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:22:36,443 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:22:36,445 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:22:36,447 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:22:36,449 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:22:36,450 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:22:36,452 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:22:36,454 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:22:36,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:22:36,455 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:22:36,456 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:22:36,457 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:22:36,458 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:22:36,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:22:36,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:22:36,460 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:22:36,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 06:22:36,464 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 06:22:36,487 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:22:36,488 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:22:36,489 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 06:22:36,489 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 06:22:36,490 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 06:22:36,490 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 06:22:36,490 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 06:22:36,490 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 06:22:36,490 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 06:22:36,491 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 06:22:36,492 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 06:22:36,492 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 06:22:36,492 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 06:22:36,492 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 06:22:36,493 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:22:36,493 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:22:36,493 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:22:36,494 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 06:22:36,495 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 06:22:36,495 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 06:22:36,495 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:22:36,495 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 06:22:36,495 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:22:36,496 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:22:36,496 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 06:22:36,496 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 06:22:36,496 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 06:22:36,496 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:22:36,497 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 06:22:36,497 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 06:22:36,497 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 06:22:36,498 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 06:22:36,498 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 06:22:36,498 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 06:22:36,498 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 06:22:36,498 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 06:22:36,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:22:36,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:22:36,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:22:36,576 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:22:36,576 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:22:36,577 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label49_true-unreach-call.c [2018-10-27 06:22:36,647 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/31532c2f0/a345ed4c535b4408964d3f6547f35c0b/FLAGd996f3ac6 [2018-10-27 06:22:37,378 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:22:37,380 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label49_true-unreach-call.c [2018-10-27 06:22:37,401 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/31532c2f0/a345ed4c535b4408964d3f6547f35c0b/FLAGd996f3ac6 [2018-10-27 06:22:37,420 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/31532c2f0/a345ed4c535b4408964d3f6547f35c0b [2018-10-27 06:22:37,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:22:37,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 06:22:37,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:22:37,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:22:37,444 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:22:37,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:22:37" (1/1) ... [2018-10-27 06:22:37,449 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 06:22:37, skipping insertion in model container [2018-10-27 06:22:37,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:22:37" (1/1) ... [2018-10-27 06:22:37,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:22:37,557 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:22:38,303 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:22:38,309 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:22:38,577 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:22:38,600 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:22:38,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38 WrapperNode [2018-10-27 06:22:38,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:22:38,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:22:38,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:22:38,602 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:22:38,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:38,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:38,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:22:38,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:22:38,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:22:38,928 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:22:38,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:38,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:38,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:38,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (1/1) ... [2018-10-27 06:22:39,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:22:39,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:22:39,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:22:39,056 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:22:39,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (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 06:22:39,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 06:22:39,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 06:22:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 06:22:39,129 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 06:22:39,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:22:39,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:22:39,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 06:22:39,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 06:22:44,361 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:22:44,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:22:44 BoogieIcfgContainer [2018-10-27 06:22:44,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:22:44,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 06:22:44,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 06:22:44,366 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 06:22:44,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:22:37" (1/3) ... [2018-10-27 06:22:44,369 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 06:22:44, skipping insertion in model container [2018-10-27 06:22:44,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:38" (2/3) ... [2018-10-27 06:22:44,369 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 06:22:44, skipping insertion in model container [2018-10-27 06:22:44,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:22:44" (3/3) ... [2018-10-27 06:22:44,373 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label49_true-unreach-call.c [2018-10-27 06:22:44,381 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 06:22:44,390 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 06:22:44,408 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 06:22:44,448 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 06:22:44,449 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 06:22:44,449 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 06:22:44,449 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:22:44,449 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:22:44,449 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 06:22:44,450 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:22:44,450 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 06:22:44,484 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 06:22:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-27 06:22:44,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:44,503 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] [2018-10-27 06:22:44,506 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:44,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:44,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1345868708, now seen corresponding path program 1 times [2018-10-27 06:22:44,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:44,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:44,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:44,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:44,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:45,593 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 06:22:45,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:22:45,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:22:45,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:22:45,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:22:45,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:22:45,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:22:45,625 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-27 06:22:47,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:22:47,970 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-10-27 06:22:47,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:22:47,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2018-10-27 06:22:47,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:22:47,999 INFO L225 Difference]: With dead ends: 844 [2018-10-27 06:22:47,999 INFO L226 Difference]: Without dead ends: 530 [2018-10-27 06:22:48,007 INFO L605 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 [2018-10-27 06:22:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-10-27 06:22:48,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-10-27 06:22:48,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-27 06:22:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-10-27 06:22:48,105 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 175 [2018-10-27 06:22:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:22:48,107 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-10-27 06:22:48,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:22:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-10-27 06:22:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-27 06:22:48,119 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:48,119 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] [2018-10-27 06:22:48,119 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:48,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:48,120 INFO L82 PathProgramCache]: Analyzing trace with hash 396212824, now seen corresponding path program 1 times [2018-10-27 06:22:48,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:48,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:48,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:48,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:48,122 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:22:48,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:22:48,680 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:22:48,681 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-10-27 06:22:48,684 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], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:22:48,749 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:22:48,749 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:22:49,935 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:22:49,937 INFO L272 AbstractInterpreter]: Visited 175 different actions 175 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 06:22:49,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:49,975 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:22:50,940 INFO L227 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 72.35% of their original sizes. [2018-10-27 06:22:50,940 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:22:51,453 INFO L415 sIntCurrentIteration]: We unified 187 AI predicates to 187 [2018-10-27 06:22:51,453 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:22:51,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:22:51,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2018-10-27 06:22:51,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:22:51,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 06:22:51,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 06:22:51,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-10-27 06:22:51,457 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 12 states. [2018-10-27 06:23:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:23:04,305 INFO L93 Difference]: Finished difference Result 1254 states and 2061 transitions. [2018-10-27 06:23:04,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:23:04,305 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 188 [2018-10-27 06:23:04,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:23:04,312 INFO L225 Difference]: With dead ends: 1254 [2018-10-27 06:23:04,312 INFO L226 Difference]: Without dead ends: 735 [2018-10-27 06:23:04,315 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 188 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-10-27 06:23:04,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2018-10-27 06:23:04,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 733. [2018-10-27 06:23:04,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-10-27 06:23:04,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1081 transitions. [2018-10-27 06:23:04,356 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1081 transitions. Word has length 188 [2018-10-27 06:23:04,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:23:04,357 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1081 transitions. [2018-10-27 06:23:04,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 06:23:04,357 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1081 transitions. [2018-10-27 06:23:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-27 06:23:04,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:23:04,362 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2018-10-27 06:23:04,362 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:23:04,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:04,363 INFO L82 PathProgramCache]: Analyzing trace with hash -790774419, now seen corresponding path program 1 times [2018-10-27 06:23:04,363 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:23:04,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:04,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:23:04,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:04,364 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:23:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:23:04,828 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:23:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:23:04,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:23:04,930 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:23:04,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-27 06:23:04,931 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], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:23:04,943 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:23:04,944 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:23:05,730 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:23:05,731 INFO L272 AbstractInterpreter]: Visited 178 different actions 349 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 06:23:05,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:05,738 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:23:06,509 INFO L227 lantSequenceWeakener]: Weakened 194 states. On average, predicates are now at 75% of their original sizes. [2018-10-27 06:23:06,510 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:23:06,887 INFO L415 sIntCurrentIteration]: We unified 196 AI predicates to 196 [2018-10-27 06:23:06,888 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:23:06,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:23:06,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 20 [2018-10-27 06:23:06,888 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:23:06,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 06:23:06,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 06:23:06,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-10-27 06:23:06,890 INFO L87 Difference]: Start difference. First operand 733 states and 1081 transitions. Second operand 15 states. [2018-10-27 06:23:51,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:23:51,818 INFO L93 Difference]: Finished difference Result 2104 states and 3546 transitions. [2018-10-27 06:23:51,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 06:23:51,818 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 197 [2018-10-27 06:23:51,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:23:51,828 INFO L225 Difference]: With dead ends: 2104 [2018-10-27 06:23:51,828 INFO L226 Difference]: Without dead ends: 1585 [2018-10-27 06:23:51,832 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2018-10-27 06:23:51,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2018-10-27 06:23:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1578. [2018-10-27 06:23:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2018-10-27 06:23:51,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2176 transitions. [2018-10-27 06:23:51,884 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2176 transitions. Word has length 197 [2018-10-27 06:23:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:23:51,885 INFO L481 AbstractCegarLoop]: Abstraction has 1578 states and 2176 transitions. [2018-10-27 06:23:51,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 06:23:51,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2176 transitions. [2018-10-27 06:23:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-10-27 06:23:51,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:23:51,891 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 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 06:23:51,891 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:23:51,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1852838586, now seen corresponding path program 1 times [2018-10-27 06:23:51,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:23:51,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:51,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:23:51,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:51,893 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:23:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:23:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:23:52,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:23:52,109 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:23:52,109 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 202 with the following transitions: [2018-10-27 06:23:52,110 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [32], [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], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:23:52,122 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:23:52,123 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:23:52,784 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:23:52,784 INFO L272 AbstractInterpreter]: Visited 179 different actions 352 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:23:52,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:52,793 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:23:53,249 INFO L227 lantSequenceWeakener]: Weakened 198 states. On average, predicates are now at 72.77% of their original sizes. [2018-10-27 06:23:53,249 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:23:53,610 INFO L415 sIntCurrentIteration]: We unified 200 AI predicates to 200 [2018-10-27 06:23:53,611 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:23:53,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:23:53,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-27 06:23:53,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:23:53,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 06:23:53,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 06:23:53,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-10-27 06:23:53,614 INFO L87 Difference]: Start difference. First operand 1578 states and 2176 transitions. Second operand 20 states. [2018-10-27 06:24:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:24,241 INFO L93 Difference]: Finished difference Result 2735 states and 4034 transitions. [2018-10-27 06:24:24,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 06:24:24,241 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 201 [2018-10-27 06:24:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:24,250 INFO L225 Difference]: With dead ends: 2735 [2018-10-27 06:24:24,250 INFO L226 Difference]: Without dead ends: 1792 [2018-10-27 06:24:24,254 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 209 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2018-10-27 06:24:24,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2018-10-27 06:24:24,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1789. [2018-10-27 06:24:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1789 states. [2018-10-27 06:24:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2403 transitions. [2018-10-27 06:24:24,300 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2403 transitions. Word has length 201 [2018-10-27 06:24:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:24,300 INFO L481 AbstractCegarLoop]: Abstraction has 1789 states and 2403 transitions. [2018-10-27 06:24:24,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-27 06:24:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2403 transitions. [2018-10-27 06:24:24,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-27 06:24:24,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:24,307 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-10-27 06:24:24,307 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:24,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:24,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1452461868, now seen corresponding path program 1 times [2018-10-27 06:24:24,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:24,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:24,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:24,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:24,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 06:24:24,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:24,502 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:24,502 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-27 06:24:24,503 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [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], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:24,509 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:24,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:25,456 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:24:25,456 INFO L272 AbstractInterpreter]: Visited 181 different actions 537 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 06:24:25,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:25,463 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:24:25,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:25,463 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 06:24:25,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:25,472 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:24:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:25,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:24:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-27 06:24:26,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:24:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-27 06:24:26,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:24:26,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-10-27 06:24:26,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:24:26,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 06:24:26,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 06:24:26,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:24:26,563 INFO L87 Difference]: Start difference. First operand 1789 states and 2403 transitions. Second operand 5 states. [2018-10-27 06:24:27,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:27,781 INFO L93 Difference]: Finished difference Result 3683 states and 5465 transitions. [2018-10-27 06:24:27,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 06:24:27,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2018-10-27 06:24:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:27,808 INFO L225 Difference]: With dead ends: 3683 [2018-10-27 06:24:27,808 INFO L226 Difference]: Without dead ends: 2740 [2018-10-27 06:24:27,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 410 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:24:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2018-10-27 06:24:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 2737. [2018-10-27 06:24:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2737 states. [2018-10-27 06:24:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 3939 transitions. [2018-10-27 06:24:27,893 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 3939 transitions. Word has length 210 [2018-10-27 06:24:27,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:27,895 INFO L481 AbstractCegarLoop]: Abstraction has 2737 states and 3939 transitions. [2018-10-27 06:24:27,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 06:24:27,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 3939 transitions. [2018-10-27 06:24:27,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-27 06:24:27,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:27,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:24:27,904 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:27,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:27,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1393647498, now seen corresponding path program 1 times [2018-10-27 06:24:27,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:27,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:27,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:27,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:27,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:24:28,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:28,160 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:28,161 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-10-27 06:24:28,161 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [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], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:28,166 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:28,166 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:29,324 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:24:29,325 INFO L272 AbstractInterpreter]: Visited 180 different actions 536 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:24:29,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:29,332 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:24:29,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:29,332 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 06:24:29,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:29,342 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:24:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:29,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:24:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:24:29,823 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:24:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:24:30,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:24:30,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 06:24:30,265 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:24:30,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 06:24:30,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 06:24:30,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-27 06:24:30,266 INFO L87 Difference]: Start difference. First operand 2737 states and 3939 transitions. Second operand 12 states. [2018-10-27 06:24:38,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:38,800 INFO L93 Difference]: Finished difference Result 11382 states and 18918 transitions. [2018-10-27 06:24:38,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-27 06:24:38,800 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 209 [2018-10-27 06:24:38,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:38,865 INFO L225 Difference]: With dead ends: 11382 [2018-10-27 06:24:38,865 INFO L226 Difference]: Without dead ends: 8651 [2018-10-27 06:24:38,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-10-27 06:24:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8651 states. [2018-10-27 06:24:39,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8651 to 8628. [2018-10-27 06:24:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8628 states. [2018-10-27 06:24:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8628 states to 8628 states and 12544 transitions. [2018-10-27 06:24:39,157 INFO L78 Accepts]: Start accepts. Automaton has 8628 states and 12544 transitions. Word has length 209 [2018-10-27 06:24:39,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:39,158 INFO L481 AbstractCegarLoop]: Abstraction has 8628 states and 12544 transitions. [2018-10-27 06:24:39,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 06:24:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 8628 states and 12544 transitions. [2018-10-27 06:24:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-27 06:24:39,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:39,194 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:24:39,195 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:39,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:39,195 INFO L82 PathProgramCache]: Analyzing trace with hash -75325013, now seen corresponding path program 1 times [2018-10-27 06:24:39,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:39,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:39,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:39,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:39,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:24:39,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:39,802 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:39,802 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-10-27 06:24:39,804 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [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], [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], [460], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:39,808 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:39,808 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:40,400 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:24:40,400 INFO L272 AbstractInterpreter]: Visited 179 different actions 352 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:24:40,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:40,409 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:24:41,301 INFO L227 lantSequenceWeakener]: Weakened 297 states. On average, predicates are now at 72.42% of their original sizes. [2018-10-27 06:24:41,301 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:24:41,579 INFO L415 sIntCurrentIteration]: We unified 299 AI predicates to 299 [2018-10-27 06:24:41,579 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:24:41,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:24:41,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 06:24:41,580 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:24:41,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 06:24:41,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 06:24:41,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-10-27 06:24:41,581 INFO L87 Difference]: Start difference. First operand 8628 states and 12544 transitions. Second operand 18 states. [2018-10-27 06:25:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:25:01,581 INFO L93 Difference]: Finished difference Result 18096 states and 26278 transitions. [2018-10-27 06:25:01,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 06:25:01,581 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 300 [2018-10-27 06:25:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:25:01,635 INFO L225 Difference]: With dead ends: 18096 [2018-10-27 06:25:01,635 INFO L226 Difference]: Without dead ends: 9895 [2018-10-27 06:25:01,670 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 308 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2018-10-27 06:25:01,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9895 states. [2018-10-27 06:25:01,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9895 to 9882. [2018-10-27 06:25:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9882 states. [2018-10-27 06:25:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9882 states to 9882 states and 13953 transitions. [2018-10-27 06:25:01,901 INFO L78 Accepts]: Start accepts. Automaton has 9882 states and 13953 transitions. Word has length 300 [2018-10-27 06:25:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:01,902 INFO L481 AbstractCegarLoop]: Abstraction has 9882 states and 13953 transitions. [2018-10-27 06:25:01,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 06:25:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 9882 states and 13953 transitions. [2018-10-27 06:25:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-27 06:25:01,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:01,940 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:25:01,941 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:01,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:01,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1137235756, now seen corresponding path program 1 times [2018-10-27 06:25:01,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:01,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:01,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:01,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:01,943 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 161 proven. 17 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-27 06:25:02,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:02,544 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:02,545 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-10-27 06:25:02,545 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [79], [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], [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], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:02,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:02,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:03,098 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:25:03,098 INFO L272 AbstractInterpreter]: Visited 180 different actions 354 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:25:03,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:03,107 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:25:03,798 INFO L227 lantSequenceWeakener]: Weakened 315 states. On average, predicates are now at 72.8% of their original sizes. [2018-10-27 06:25:03,798 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:25:04,500 INFO L415 sIntCurrentIteration]: We unified 317 AI predicates to 317 [2018-10-27 06:25:04,500 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:25:04,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:25:04,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-27 06:25:04,501 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:25:04,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 06:25:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 06:25:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-27 06:25:04,502 INFO L87 Difference]: Start difference. First operand 9882 states and 13953 transitions. Second operand 19 states. [2018-10-27 06:25:42,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:25:42,256 INFO L93 Difference]: Finished difference Result 20639 states and 29821 transitions. [2018-10-27 06:25:42,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 06:25:42,257 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 318 [2018-10-27 06:25:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:25:42,310 INFO L225 Difference]: With dead ends: 20639 [2018-10-27 06:25:42,311 INFO L226 Difference]: Without dead ends: 11813 [2018-10-27 06:25:42,342 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 325 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2018-10-27 06:25:42,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11813 states. [2018-10-27 06:25:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11813 to 11808. [2018-10-27 06:25:42,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11808 states. [2018-10-27 06:25:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11808 states to 11808 states and 16436 transitions. [2018-10-27 06:25:42,598 INFO L78 Accepts]: Start accepts. Automaton has 11808 states and 16436 transitions. Word has length 318 [2018-10-27 06:25:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:42,599 INFO L481 AbstractCegarLoop]: Abstraction has 11808 states and 16436 transitions. [2018-10-27 06:25:42,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 06:25:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 11808 states and 16436 transitions. [2018-10-27 06:25:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-27 06:25:42,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:42,641 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:25:42,641 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:42,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1345255319, now seen corresponding path program 1 times [2018-10-27 06:25:42,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:42,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:42,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:42,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:42,643 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 154 proven. 57 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-27 06:25:43,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:43,027 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:43,027 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 331 with the following transitions: [2018-10-27 06:25:43,027 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [79], [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], [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], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:43,032 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:43,033 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:45,105 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:25:45,105 INFO L272 AbstractInterpreter]: Visited 182 different actions 725 times. Merged at 8 different actions 33 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:25:45,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:45,111 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:25:45,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:45,111 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 06:25:45,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:45,121 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:25:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:45,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:25:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-27 06:25:45,498 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:25:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 163 proven. 38 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-27 06:25:46,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:25:46,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 06:25:46,034 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:25:46,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 06:25:46,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 06:25:46,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-10-27 06:25:46,035 INFO L87 Difference]: Start difference. First operand 11808 states and 16436 transitions. Second operand 12 states. [2018-10-27 06:25:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:25:56,612 INFO L93 Difference]: Finished difference Result 40090 states and 59772 transitions. [2018-10-27 06:25:56,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-27 06:25:56,612 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 330 [2018-10-27 06:25:56,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:25:56,747 INFO L225 Difference]: With dead ends: 40090 [2018-10-27 06:25:56,747 INFO L226 Difference]: Without dead ends: 28708 [2018-10-27 06:25:56,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 690 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=477, Invalid=1779, Unknown=0, NotChecked=0, Total=2256 [2018-10-27 06:25:56,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28708 states. [2018-10-27 06:25:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28708 to 28547. [2018-10-27 06:25:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28547 states. [2018-10-27 06:25:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28547 states to 28547 states and 40119 transitions. [2018-10-27 06:25:57,544 INFO L78 Accepts]: Start accepts. Automaton has 28547 states and 40119 transitions. Word has length 330 [2018-10-27 06:25:57,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:57,544 INFO L481 AbstractCegarLoop]: Abstraction has 28547 states and 40119 transitions. [2018-10-27 06:25:57,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 06:25:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 28547 states and 40119 transitions. [2018-10-27 06:25:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-10-27 06:25:57,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:57,611 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:25:57,611 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:57,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:57,611 INFO L82 PathProgramCache]: Analyzing trace with hash 2022963635, now seen corresponding path program 1 times [2018-10-27 06:25:57,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:57,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:57,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:57,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:57,613 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 183 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:25:58,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:58,503 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:58,503 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 342 with the following transitions: [2018-10-27 06:25:58,504 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], [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], [616], [621], [623], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:58,508 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:58,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:59,488 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:25:59,488 INFO L272 AbstractInterpreter]: Visited 181 different actions 537 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 06:25:59,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:59,497 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:25:59,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:59,497 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:25:59,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:59,506 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:25:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:59,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:26:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-27 06:26:00,018 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:26:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-27 06:26:00,327 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:26:00,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 11 [2018-10-27 06:26:00,328 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:26:00,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:26:00,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:26:00,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:26:00,329 INFO L87 Difference]: Start difference. First operand 28547 states and 40119 transitions. Second operand 3 states. [2018-10-27 06:26:02,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:26:02,450 INFO L93 Difference]: Finished difference Result 80520 states and 116625 transitions. [2018-10-27 06:26:02,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:26:02,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 341 [2018-10-27 06:26:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:26:02,647 INFO L225 Difference]: With dead ends: 80520 [2018-10-27 06:26:02,647 INFO L226 Difference]: Without dead ends: 52818 [2018-10-27 06:26:02,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 680 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:26:02,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52818 states. [2018-10-27 06:26:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52818 to 52808. [2018-10-27 06:26:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52808 states. [2018-10-27 06:26:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52808 states to 52808 states and 73416 transitions. [2018-10-27 06:26:03,791 INFO L78 Accepts]: Start accepts. Automaton has 52808 states and 73416 transitions. Word has length 341 [2018-10-27 06:26:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:26:03,792 INFO L481 AbstractCegarLoop]: Abstraction has 52808 states and 73416 transitions. [2018-10-27 06:26:03,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:26:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 52808 states and 73416 transitions. [2018-10-27 06:26:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-10-27 06:26:03,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:26:03,874 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:26:03,874 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:26:03,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:26:03,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1800312555, now seen corresponding path program 1 times [2018-10-27 06:26:03,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:26:03,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:26:03,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:26:03,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:26:03,876 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:26:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:26:05,010 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:26:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 202 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:26:05,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:26:05,247 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:26:05,248 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 362 with the following transitions: [2018-10-27 06:26:05,248 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], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [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], [543], [548], [550], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:26:05,252 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:26:05,252 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:26:06,585 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:26:06,586 INFO L272 AbstractInterpreter]: Visited 183 different actions 727 times. Merged at 8 different actions 33 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:26:06,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:26:06,594 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:26:06,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:26:06,595 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:26:06,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:26:06,604 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:26:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:26:06,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:26:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-27 06:26:06,947 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:26:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-27 06:26:07,530 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:26:07,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9] total 10 [2018-10-27 06:26:07,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:26:07,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:26:07,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:26:07,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:26:07,532 INFO L87 Difference]: Start difference. First operand 52808 states and 73416 transitions. Second operand 3 states. [2018-10-27 06:26:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:26:09,740 INFO L93 Difference]: Finished difference Result 137696 states and 193143 transitions. [2018-10-27 06:26:09,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:26:09,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 361 [2018-10-27 06:26:09,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:26:10,138 INFO L225 Difference]: With dead ends: 137696 [2018-10-27 06:26:10,138 INFO L226 Difference]: Without dead ends: 85733 [2018-10-27 06:26:10,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 720 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:26:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85733 states. [2018-10-27 06:26:11,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85733 to 85596. [2018-10-27 06:26:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85596 states. [2018-10-27 06:26:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85596 states to 85596 states and 118143 transitions. [2018-10-27 06:26:12,034 INFO L78 Accepts]: Start accepts. Automaton has 85596 states and 118143 transitions. Word has length 361 [2018-10-27 06:26:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:26:12,035 INFO L481 AbstractCegarLoop]: Abstraction has 85596 states and 118143 transitions. [2018-10-27 06:26:12,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:26:12,035 INFO L276 IsEmpty]: Start isEmpty. Operand 85596 states and 118143 transitions. [2018-10-27 06:26:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-10-27 06:26:12,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:26:12,135 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:26:12,135 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:26:12,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:26:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash 490766068, now seen corresponding path program 1 times [2018-10-27 06:26:12,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:26:12,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:26:12,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:26:12,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:26:12,137 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:26:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:26:12,764 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 06:26:12,956 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 06:26:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 225 proven. 49 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-27 06:26:13,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:26:13,416 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:26:13,416 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 377 with the following transitions: [2018-10-27 06:26:13,416 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], [123], [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], [616], [621], [623], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:26:13,421 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:26:13,421 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:26:14,811 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:26:14,811 INFO L272 AbstractInterpreter]: Visited 182 different actions 542 times. Merged at 8 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:26:14,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:26:14,834 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:26:14,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:26:14,834 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:26:14,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:26:14,844 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:26:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:26:15,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:26:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-27 06:26:15,270 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:26:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 203 proven. 45 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-10-27 06:26:15,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:26:15,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 15 [2018-10-27 06:26:15,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:26:15,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 06:26:15,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 06:26:15,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2018-10-27 06:26:15,710 INFO L87 Difference]: Start difference. First operand 85596 states and 118143 transitions. Second operand 5 states. [2018-10-27 06:26:18,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:26:18,233 INFO L93 Difference]: Finished difference Result 237990 states and 347476 transitions. [2018-10-27 06:26:18,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:26:18,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 376 [2018-10-27 06:26:18,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:26:19,078 INFO L225 Difference]: With dead ends: 237990 [2018-10-27 06:26:19,079 INFO L226 Difference]: Without dead ends: 153239 [2018-10-27 06:26:19,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-10-27 06:26:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153239 states. [2018-10-27 06:26:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153239 to 150205. [2018-10-27 06:26:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150205 states. [2018-10-27 06:26:23,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150205 states to 150205 states and 209702 transitions. [2018-10-27 06:26:23,615 INFO L78 Accepts]: Start accepts. Automaton has 150205 states and 209702 transitions. Word has length 376 [2018-10-27 06:26:23,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:26:23,615 INFO L481 AbstractCegarLoop]: Abstraction has 150205 states and 209702 transitions. [2018-10-27 06:26:23,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 06:26:23,616 INFO L276 IsEmpty]: Start isEmpty. Operand 150205 states and 209702 transitions. [2018-10-27 06:26:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-10-27 06:26:23,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:26:23,868 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 06:26:23,869 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:26:23,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:26:23,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1068277655, now seen corresponding path program 1 times [2018-10-27 06:26:23,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:26:23,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:26:23,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:26:23,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:26:23,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:26:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:26:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 262 proven. 57 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-10-27 06:26:24,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:26:24,355 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:26:24,355 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 400 with the following transitions: [2018-10-27 06:26:24,355 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [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], [600], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:26:24,359 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:26:24,360 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 06:26:28,951 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 06:26:28,954 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 06:26:28,954 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 06:26:28,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:26:28,954 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:26:28,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:26:28,966 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:26:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:26:29,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:26:29,306 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 06:26:29,507 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:26:29,507 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 06:26:29,512 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 06:26:29,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 06:26:29 BoogieIcfgContainer [2018-10-27 06:26:29,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 06:26:29,513 INFO L168 Benchmark]: Toolchain (without parser) took 232080.72 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 578.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:29,515 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 06:26:29,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1166.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:29,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 325.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 733.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:29,517 INFO L168 Benchmark]: Boogie Preprocessor took 127.47 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:29,521 INFO L168 Benchmark]: RCFGBuilder took 5306.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 250.1 MB). Peak memory consumption was 250.1 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:29,524 INFO L168 Benchmark]: TraceAbstraction took 225149.72 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 3.8 GB in the end (delta: -1.9 GB). Peak memory consumption was 354.7 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:29,537 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1166.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 325.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 733.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.47 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5306.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 250.1 MB). Peak memory consumption was 250.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225149.72 ms. Allocated memory was 2.2 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.9 GB in the beginning and 3.8 GB in the end (delta: -1.9 GB). Peak memory consumption was 354.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1539]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1539). Cancelled while BasicCegarLoop was analyzing trace of length 400 with TraceHistMax 7,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, 225.0s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 178.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3701 SDtfs, 19757 SDslu, 6749 SDs, 0 SdLazy, 26335 SolverSat, 4483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 5053 GetRequests, 4801 SyntacticMatches, 16 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150205occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.5s AbstIntTime, 12 AbstIntIterations, 5 AbstIntStrong, 0.9991079511096388 AbsIntWeakeningRatio, 0.2510425354462052 AbsIntAvgWeakeningVarsNumRemoved, 56.92160133444537 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 3403 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 5033 NumberOfCodeBlocks, 5033 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6836 ConstructedInterpolants, 0 QuantifiedInterpolants, 7433357 SizeOfPredicates, 8 NumberOfNonLiveVariables, 7825 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 24 InterpolantComputations, 7 PerfectInterpolantSequences, 3252/3566 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown