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_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:09:25,383 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:09:25,388 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:09:25,403 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:09:25,403 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:09:25,405 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:09:25,406 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:09:25,408 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:09:25,409 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:09:25,410 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:09:25,411 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:09:25,412 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:09:25,413 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:09:25,414 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:09:25,415 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:09:25,416 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:09:25,417 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:09:25,419 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:09:25,421 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:09:25,423 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:09:25,424 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:09:25,425 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:09:25,428 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 00:09:25,428 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 00:09:25,428 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 00:09:25,429 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 00:09:25,433 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 00:09:25,434 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 00:09:25,436 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 00:09:25,439 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 00:09:25,439 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 00:09:25,440 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 00:09:25,443 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 [2018-10-25 00:09:25,466 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:09:25,466 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:09:25,467 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:09:25,467 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:09:25,467 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:09:25,467 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:09:25,468 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:09:25,468 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:09:25,468 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:09:25,468 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:09:25,468 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:09:25,469 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:09:25,469 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:09:25,469 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:09:25,470 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:09:25,470 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:09:25,470 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:09:25,470 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:09:25,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:09:25,471 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:09:25,471 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:09:25,471 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:09:25,471 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:09:25,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:09:25,472 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:09:25,472 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:09:25,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:09:25,472 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:09:25,473 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:09:25,473 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:09:25,473 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:09:25,473 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:09:25,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:09:25,474 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:09:25,474 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:09:25,474 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:09:25,519 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:09:25,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:09:25,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:09:25,537 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:09:25,538 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:09:25,539 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-10-25 00:09:25,605 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/baa8fa9c8/e3b8ab4ef2c44c61b0173352467af5a7/FLAG5f872398f [2018-10-25 00:09:26,313 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:09:26,314 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-10-25 00:09:26,334 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/baa8fa9c8/e3b8ab4ef2c44c61b0173352467af5a7/FLAG5f872398f [2018-10-25 00:09:26,353 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/baa8fa9c8/e3b8ab4ef2c44c61b0173352467af5a7 [2018-10-25 00:09:26,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:09:26,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:09:26,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:26,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:09:26,372 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:09:26,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:26" (1/1) ... [2018-10-25 00:09:26,379 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 25.10 12:09:26, skipping insertion in model container [2018-10-25 00:09:26,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:09:26" (1/1) ... [2018-10-25 00:09:26,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:09:26,484 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:09:27,242 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:27,248 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:09:27,503 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:09:27,526 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:09:27,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27 WrapperNode [2018-10-25 00:09:27,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:09:27,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:27,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:09:27,528 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:09:27,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (1/1) ... [2018-10-25 00:09:27,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (1/1) ... [2018-10-25 00:09:27,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:09:27,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:09:27,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:09:27,818 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:09:27,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (1/1) ... [2018-10-25 00:09:27,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (1/1) ... [2018-10-25 00:09:27,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (1/1) ... [2018-10-25 00:09:27,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (1/1) ... [2018-10-25 00:09:27,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (1/1) ... [2018-10-25 00:09:27,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (1/1) ... [2018-10-25 00:09:27,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (1/1) ... [2018-10-25 00:09:27,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:09:27,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:09:27,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:09:27,991 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:09:27,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (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 [2018-10-25 00:09:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:09:28,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:09:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:09:28,072 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:09:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:09:28,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:09:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:09:28,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:09:33,595 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:09:33,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:09:33 BoogieIcfgContainer [2018-10-25 00:09:33,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:09:33,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:09:33,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:09:33,602 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:09:33,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:09:26" (1/3) ... [2018-10-25 00:09:33,604 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 25.10 12:09:33, skipping insertion in model container [2018-10-25 00:09:33,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:09:27" (2/3) ... [2018-10-25 00:09:33,604 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 25.10 12:09:33, skipping insertion in model container [2018-10-25 00:09:33,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:09:33" (3/3) ... [2018-10-25 00:09:33,607 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label04_true-unreach-call.c [2018-10-25 00:09:33,617 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:09:33,627 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:09:33,646 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:09:33,702 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:09:33,703 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:09:33,703 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:09:33,703 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:09:33,703 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:09:33,703 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:09:33,703 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:09:33,704 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:09:33,750 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:09:33,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-25 00:09:33,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:33,783 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:09:33,789 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:33,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:33,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1740554548, now seen corresponding path program 1 times [2018-10-25 00:09:33,801 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:33,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:33,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:33,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:33,864 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:35,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:35,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 00:09:35,187 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:35,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 00:09:35,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 00:09:35,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:09:35,214 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-25 00:09:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:38,776 INFO L93 Difference]: Finished difference Result 1057 states and 1905 transitions. [2018-10-25 00:09:38,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 00:09:38,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-10-25 00:09:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:38,809 INFO L225 Difference]: With dead ends: 1057 [2018-10-25 00:09:38,809 INFO L226 Difference]: Without dead ends: 739 [2018-10-25 00:09:38,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 00:09:38,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2018-10-25 00:09:38,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 528. [2018-10-25 00:09:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2018-10-25 00:09:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 879 transitions. [2018-10-25 00:09:38,923 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 879 transitions. Word has length 205 [2018-10-25 00:09:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:38,924 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 879 transitions. [2018-10-25 00:09:38,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 00:09:38,925 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 879 transitions. [2018-10-25 00:09:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-25 00:09:38,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:38,937 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:09:38,938 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:38,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:38,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1550134832, now seen corresponding path program 1 times [2018-10-25 00:09:38,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:38,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:38,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:38,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:38,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:39,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:09:39,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:09:39,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:39,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:09:39,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:09:39,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:39,429 INFO L87 Difference]: Start difference. First operand 528 states and 879 transitions. Second operand 3 states. [2018-10-25 00:09:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:09:41,253 INFO L93 Difference]: Finished difference Result 1482 states and 2549 transitions. [2018-10-25 00:09:41,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:09:41,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-10-25 00:09:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:09:41,262 INFO L225 Difference]: With dead ends: 1482 [2018-10-25 00:09:41,262 INFO L226 Difference]: Without dead ends: 960 [2018-10-25 00:09:41,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:09:41,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2018-10-25 00:09:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 946. [2018-10-25 00:09:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2018-10-25 00:09:41,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1557 transitions. [2018-10-25 00:09:41,317 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1557 transitions. Word has length 218 [2018-10-25 00:09:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:09:41,318 INFO L481 AbstractCegarLoop]: Abstraction has 946 states and 1557 transitions. [2018-10-25 00:09:41,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:09:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1557 transitions. [2018-10-25 00:09:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-25 00:09:41,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:09:41,324 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:09:41,325 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:09:41,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:41,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1141936112, now seen corresponding path program 1 times [2018-10-25 00:09:41,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:09:41,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:41,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:09:41,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:09:41,327 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:09:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:09:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:09:41,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:09:41,563 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:09:41,564 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-10-25 00:09:41,566 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [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], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1101], [1103], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:09:41,633 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:09:41,633 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:09:42,947 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:09:42,949 INFO L272 AbstractInterpreter]: Visited 206 different actions 206 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-25 00:09:42,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:09:42,982 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:09:44,251 INFO L232 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 74.79% of their original sizes. [2018-10-25 00:09:44,251 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:09:44,630 INFO L413 sIntCurrentIteration]: We have 228 unified AI predicates [2018-10-25 00:09:44,630 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:09:44,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:09:44,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:09:44,632 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:09:44,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:09:44,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:09:44,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:09:44,633 INFO L87 Difference]: Start difference. First operand 946 states and 1557 transitions. Second operand 13 states. [2018-10-25 00:11:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:11:16,271 INFO L93 Difference]: Finished difference Result 2096 states and 3461 transitions. [2018-10-25 00:11:16,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 00:11:16,271 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 229 [2018-10-25 00:11:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:11:16,278 INFO L225 Difference]: With dead ends: 2096 [2018-10-25 00:11:16,278 INFO L226 Difference]: Without dead ends: 1156 [2018-10-25 00:11:16,281 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 229 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:11:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2018-10-25 00:11:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1154. [2018-10-25 00:11:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2018-10-25 00:11:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1775 transitions. [2018-10-25 00:11:16,318 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1775 transitions. Word has length 229 [2018-10-25 00:11:16,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:11:16,318 INFO L481 AbstractCegarLoop]: Abstraction has 1154 states and 1775 transitions. [2018-10-25 00:11:16,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:11:16,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1775 transitions. [2018-10-25 00:11:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-25 00:11:16,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:11:16,325 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:11:16,325 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:11:16,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:16,326 INFO L82 PathProgramCache]: Analyzing trace with hash 899426459, now seen corresponding path program 1 times [2018-10-25 00:11:16,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:11:16,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:16,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:16,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:16,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:11:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:16,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:16,797 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:11:16,797 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-10-25 00:11:16,798 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [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], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1101], [1103], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:11:16,810 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:11:16,810 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:11:19,880 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:11:19,881 INFO L272 AbstractInterpreter]: Visited 210 different actions 418 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:11:19,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:19,889 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:11:19,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:19,890 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 [2018-10-25 00:11:19,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:19,899 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:11:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:20,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:11:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:20,410 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:11:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:11:20,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:11:20,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-10-25 00:11:20,683 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:11:20,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:11:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:11:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-10-25 00:11:20,684 INFO L87 Difference]: Start difference. First operand 1154 states and 1775 transitions. Second operand 9 states. [2018-10-25 00:11:21,132 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:11:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:11:32,806 INFO L93 Difference]: Finished difference Result 9407 states and 19924 transitions. [2018-10-25 00:11:32,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-25 00:11:32,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 238 [2018-10-25 00:11:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:11:32,923 INFO L225 Difference]: With dead ends: 9407 [2018-10-25 00:11:32,923 INFO L226 Difference]: Without dead ends: 8467 [2018-10-25 00:11:32,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2018-10-25 00:11:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8467 states. [2018-10-25 00:11:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8467 to 8098. [2018-10-25 00:11:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8098 states. [2018-10-25 00:11:33,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8098 states to 8098 states and 12823 transitions. [2018-10-25 00:11:33,348 INFO L78 Accepts]: Start accepts. Automaton has 8098 states and 12823 transitions. Word has length 238 [2018-10-25 00:11:33,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:11:33,348 INFO L481 AbstractCegarLoop]: Abstraction has 8098 states and 12823 transitions. [2018-10-25 00:11:33,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 00:11:33,349 INFO L276 IsEmpty]: Start isEmpty. Operand 8098 states and 12823 transitions. [2018-10-25 00:11:33,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-25 00:11:33,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:11:33,402 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:11:33,403 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:11:33,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:33,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1302031735, now seen corresponding path program 1 times [2018-10-25 00:11:33,403 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:11:33,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:33,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:11:33,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:11:33,405 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:11:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:11:33,706 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:11:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:11:33,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:11:33,881 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:11:33,882 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-10-25 00:11:33,882 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [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], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1101], [1103], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:11:33,896 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:11:33,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:11:35,507 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:11:35,508 INFO L272 AbstractInterpreter]: Visited 209 different actions 412 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:11:35,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:11:35,547 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:11:37,517 INFO L232 lantSequenceWeakener]: Weakened 237 states. On average, predicates are now at 74.5% of their original sizes. [2018-10-25 00:11:37,518 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:11:39,495 INFO L413 sIntCurrentIteration]: We have 241 unified AI predicates [2018-10-25 00:11:39,495 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:11:39,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:11:39,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-25 00:11:39,496 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:11:39,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-25 00:11:39,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-25 00:11:39,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:11:39,497 INFO L87 Difference]: Start difference. First operand 8098 states and 12823 transitions. Second operand 18 states. [2018-10-25 00:12:46,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:12:46,079 INFO L93 Difference]: Finished difference Result 16146 states and 25263 transitions. [2018-10-25 00:12:46,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:12:46,080 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 242 [2018-10-25 00:12:46,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:12:46,125 INFO L225 Difference]: With dead ends: 16146 [2018-10-25 00:12:46,125 INFO L226 Difference]: Without dead ends: 8262 [2018-10-25 00:12:46,160 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2018-10-25 00:12:46,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8262 states. [2018-10-25 00:12:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8262 to 8259. [2018-10-25 00:12:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8259 states. [2018-10-25 00:12:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8259 states to 8259 states and 12483 transitions. [2018-10-25 00:12:46,411 INFO L78 Accepts]: Start accepts. Automaton has 8259 states and 12483 transitions. Word has length 242 [2018-10-25 00:12:46,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:12:46,412 INFO L481 AbstractCegarLoop]: Abstraction has 8259 states and 12483 transitions. [2018-10-25 00:12:46,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-25 00:12:46,412 INFO L276 IsEmpty]: Start isEmpty. Operand 8259 states and 12483 transitions. [2018-10-25 00:12:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-25 00:12:46,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:12:46,452 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:12:46,452 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:12:46,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:46,454 INFO L82 PathProgramCache]: Analyzing trace with hash 244916885, now seen corresponding path program 1 times [2018-10-25 00:12:46,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:12:46,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:46,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:46,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:46,456 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:12:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:12:46,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:46,970 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:12:46,971 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-10-25 00:12:46,971 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [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], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1101], [1103], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:12:46,978 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:12:46,979 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:12:49,465 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:12:49,466 INFO L272 AbstractInterpreter]: Visited 210 different actions 412 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:12:49,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:49,472 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:12:49,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:49,472 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 [2018-10-25 00:12:49,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:49,483 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:12:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:49,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:12:49,869 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:12:49,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:12:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:12:50,407 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:12:50,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 00:12:50,408 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:12:50,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:12:50,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:12:50,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:12:50,409 INFO L87 Difference]: Start difference. First operand 8259 states and 12483 transitions. Second operand 3 states. [2018-10-25 00:12:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:12:52,522 INFO L93 Difference]: Finished difference Result 23126 states and 36708 transitions. [2018-10-25 00:12:52,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:12:52,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2018-10-25 00:12:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:12:52,611 INFO L225 Difference]: With dead ends: 23126 [2018-10-25 00:12:52,611 INFO L226 Difference]: Without dead ends: 15081 [2018-10-25 00:12:52,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 502 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:12:52,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15081 states. [2018-10-25 00:12:53,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15081 to 15057. [2018-10-25 00:12:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15057 states. [2018-10-25 00:12:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15057 states to 15057 states and 23637 transitions. [2018-10-25 00:12:53,145 INFO L78 Accepts]: Start accepts. Automaton has 15057 states and 23637 transitions. Word has length 252 [2018-10-25 00:12:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:12:53,146 INFO L481 AbstractCegarLoop]: Abstraction has 15057 states and 23637 transitions. [2018-10-25 00:12:53,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:12:53,146 INFO L276 IsEmpty]: Start isEmpty. Operand 15057 states and 23637 transitions. [2018-10-25 00:12:53,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-25 00:12:53,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:12:53,207 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:12:53,207 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:12:53,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:53,207 INFO L82 PathProgramCache]: Analyzing trace with hash 378616459, now seen corresponding path program 1 times [2018-10-25 00:12:53,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:12:53,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:53,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:53,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:53,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:12:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 72 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:12:53,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:53,692 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:12:53,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-25 00:12:53,693 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [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], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1101], [1103], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:12:53,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:12:53,700 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:12:56,035 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:12:56,035 INFO L272 AbstractInterpreter]: Visited 211 different actions 420 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:12:56,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:56,041 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:12:56,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:12:56,041 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 [2018-10-25 00:12:56,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:56,051 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:12:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:56,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:12:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-25 00:12:56,458 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:12:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-25 00:12:56,774 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:12:56,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-10-25 00:12:56,775 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:12:56,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:12:56,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:12:56,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:12:56,776 INFO L87 Difference]: Start difference. First operand 15057 states and 23637 transitions. Second operand 3 states. [2018-10-25 00:12:58,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:12:58,132 INFO L93 Difference]: Finished difference Result 29816 states and 47370 transitions. [2018-10-25 00:12:58,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:12:58,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2018-10-25 00:12:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:12:58,230 INFO L225 Difference]: With dead ends: 29816 [2018-10-25 00:12:58,230 INFO L226 Difference]: Without dead ends: 19458 [2018-10-25 00:12:58,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-25 00:12:58,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19458 states. [2018-10-25 00:12:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19458 to 19453. [2018-10-25 00:12:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19453 states. [2018-10-25 00:12:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19453 states to 19453 states and 30458 transitions. [2018-10-25 00:12:59,102 INFO L78 Accepts]: Start accepts. Automaton has 19453 states and 30458 transitions. Word has length 263 [2018-10-25 00:12:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:12:59,103 INFO L481 AbstractCegarLoop]: Abstraction has 19453 states and 30458 transitions. [2018-10-25 00:12:59,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:12:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 19453 states and 30458 transitions. [2018-10-25 00:12:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-25 00:12:59,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:12:59,167 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:12:59,168 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:12:59,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:12:59,168 INFO L82 PathProgramCache]: Analyzing trace with hash -168769138, now seen corresponding path program 1 times [2018-10-25 00:12:59,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:12:59,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:59,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:12:59,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:12:59,171 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:12:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:12:59,780 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 00:13:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 132 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:13:00,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:00,034 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:00,035 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 322 with the following transitions: [2018-10-25 00:13:00,035 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], [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], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1101], [1103], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:00,041 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:00,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:05,197 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:13:05,197 INFO L272 AbstractInterpreter]: Visited 211 different actions 636 times. Merged at 8 different actions 26 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-25 00:13:05,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:05,203 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:13:05,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:05,203 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 [2018-10-25 00:13:05,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:05,211 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:13:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:05,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:13:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-25 00:13:05,649 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:13:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-25 00:13:06,322 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:13:06,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 00:13:06,323 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:06,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:06,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:06,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:13:06,324 INFO L87 Difference]: Start difference. First operand 19453 states and 30458 transitions. Second operand 3 states. [2018-10-25 00:13:08,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:08,475 INFO L93 Difference]: Finished difference Result 54764 states and 88054 transitions. [2018-10-25 00:13:08,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:08,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 321 [2018-10-25 00:13:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:08,661 INFO L225 Difference]: With dead ends: 54764 [2018-10-25 00:13:08,662 INFO L226 Difference]: Without dead ends: 35736 [2018-10-25 00:13:08,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 640 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 00:13:08,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35736 states. [2018-10-25 00:13:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35736 to 35733. [2018-10-25 00:13:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35733 states. [2018-10-25 00:13:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35733 states to 35733 states and 54082 transitions. [2018-10-25 00:13:09,776 INFO L78 Accepts]: Start accepts. Automaton has 35733 states and 54082 transitions. Word has length 321 [2018-10-25 00:13:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:09,777 INFO L481 AbstractCegarLoop]: Abstraction has 35733 states and 54082 transitions. [2018-10-25 00:13:09,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:09,778 INFO L276 IsEmpty]: Start isEmpty. Operand 35733 states and 54082 transitions. [2018-10-25 00:13:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-25 00:13:09,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:09,859 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:09,860 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:09,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:09,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1671326373, now seen corresponding path program 1 times [2018-10-25 00:13:09,860 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:09,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:09,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:09,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:09,861 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 142 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:13:10,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:10,104 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:10,104 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-10-25 00:13:10,105 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [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], [342], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1101], [1103], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:10,111 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:10,111 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:14,889 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:13:14,890 INFO L272 AbstractInterpreter]: Visited 211 different actions 631 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:13:14,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:14,898 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:13:14,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:14,898 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 [2018-10-25 00:13:14,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:14,907 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:13:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:15,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:13:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:13:15,302 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:13:15,559 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-10-25 00:13:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-25 00:13:15,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:13:15,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 00:13:15,920 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:13:15,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 00:13:15,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 00:13:15,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-25 00:13:15,922 INFO L87 Difference]: Start difference. First operand 35733 states and 54082 transitions. Second operand 9 states. [2018-10-25 00:13:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:20,644 INFO L93 Difference]: Finished difference Result 136999 states and 229539 transitions. [2018-10-25 00:13:20,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 00:13:20,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 333 [2018-10-25 00:13:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-10-25 00:13:21,316 INFO L225 Difference]: With dead ends: 136999 [2018-10-25 00:13:21,316 INFO L226 Difference]: Without dead ends: 101691 [2018-10-25 00:13:21,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 666 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-10-25 00:13:21,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101691 states. [2018-10-25 00:13:21,545 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:13:21,550 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:13:21,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:13:21 BoogieIcfgContainer [2018-10-25 00:13:21,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:13:21,553 INFO L168 Benchmark]: Toolchain (without parser) took 235187.49 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 8.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:21,554 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-25 00:13:21,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1159.66 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:21,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 290.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:21,558 INFO L168 Benchmark]: Boogie Preprocessor took 172.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:21,559 INFO L168 Benchmark]: RCFGBuilder took 5606.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.4 MB). Peak memory consumption was 258.4 MB. Max. memory is 7.1 GB. [2018-10-25 00:13:21,560 INFO L168 Benchmark]: TraceAbstraction took 227952.73 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 522.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-25 00:13:21,567 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1159.66 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 290.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 172.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5606.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 258.4 MB). Peak memory consumption was 258.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227952.73 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.4 GB in the end (delta: 522.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1629]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1629). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 227.8s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 187.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3087 SDtfs, 10284 SDslu, 3310 SDs, 0 SdLazy, 22565 SolverSat, 3250 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 146.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 3395 GetRequests, 3281 SyntacticMatches, 5 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35733occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.9s AbstIntTime, 7 AbstIntIterations, 2 AbstIntStrong, 0.9992278767663338 AbsIntWeakeningRatio, 0.27078891257995735 AbsIntAvgWeakeningVarsNumRemoved, 30.3454157782516 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 631 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 3708 NumberOfCodeBlocks, 3708 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5096 ConstructedInterpolants, 0 QuantifiedInterpolants, 3099533 SizeOfPredicates, 9 NumberOfNonLiveVariables, 5958 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 1678/1760 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown