java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:16:01,393 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:16:01,395 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:16:01,408 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:16:01,409 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:16:01,410 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:16:01,411 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:16:01,413 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:16:01,415 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:16:01,416 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:16:01,417 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:16:01,417 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:16:01,418 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:16:01,419 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:16:01,420 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:16:01,421 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:16:01,422 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:16:01,424 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:16:01,426 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:16:01,428 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:16:01,429 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:16:01,430 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:16:01,433 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:16:01,433 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:16:01,433 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:16:01,434 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:16:01,436 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:16:01,437 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:16:01,437 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:16:01,439 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:16:01,439 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:16:01,440 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:16:01,440 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:16:01,440 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:16:01,441 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:16:01,442 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:16:01,442 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 18:16:01,458 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:16:01,458 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:16:01,459 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:16:01,459 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:16:01,460 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:16:01,460 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:16:01,460 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:16:01,460 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:16:01,460 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:16:01,461 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:16:01,461 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:16:01,462 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:16:01,462 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:16:01,462 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:16:01,462 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:16:01,462 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:16:01,463 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:16:01,463 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:16:01,463 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:16:01,463 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:16:01,463 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:16:01,464 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:16:01,464 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:16:01,464 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:16:01,464 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:16:01,465 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:16:01,465 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:16:01,465 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:16:01,465 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:16:01,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:16:01,466 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:16:01,466 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:16:01,466 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:16:01,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:16:01,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:16:01,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:16:01,529 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:16:01,529 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:16:01,530 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c [2018-09-14 18:16:01,891 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf9b40d7/790933afb72942e7a520325f1935a9a6/FLAG970f0ba30 [2018-09-14 18:16:02,291 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:16:02,292 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c [2018-09-14 18:16:02,318 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf9b40d7/790933afb72942e7a520325f1935a9a6/FLAG970f0ba30 [2018-09-14 18:16:02,338 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bf9b40d7/790933afb72942e7a520325f1935a9a6 [2018-09-14 18:16:02,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:16:02,355 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:16:02,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:16:02,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:16:02,367 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:16:02,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:16:02" (1/1) ... [2018-09-14 18:16:02,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4c6457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:02, skipping insertion in model container [2018-09-14 18:16:02,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:16:02" (1/1) ... [2018-09-14 18:16:02,386 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:16:03,597 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:16:03,617 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:16:04,070 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:16:04,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04 WrapperNode [2018-09-14 18:16:04,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:16:04,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:16:04,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:16:04,217 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:16:04,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... [2018-09-14 18:16:04,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... [2018-09-14 18:16:04,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:16:04,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:16:04,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:16:04,394 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:16:04,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... [2018-09-14 18:16:04,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... [2018-09-14 18:16:04,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... [2018-09-14 18:16:04,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... [2018-09-14 18:16:04,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... [2018-09-14 18:16:04,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... [2018-09-14 18:16:05,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... [2018-09-14 18:16:05,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:16:05,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:16:05,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:16:05,052 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:16:05,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:16:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:16:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:16:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:16:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:16:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:16:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:16:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:16:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:16:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:16:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:16:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:16:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:16:13,824 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:16:13,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:16:13 BoogieIcfgContainer [2018-09-14 18:16:13,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:16:13,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:16:13,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:16:13,830 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:16:13,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:16:02" (1/3) ... [2018-09-14 18:16:13,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734de1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:16:13, skipping insertion in model container [2018-09-14 18:16:13,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:16:04" (2/3) ... [2018-09-14 18:16:13,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734de1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:16:13, skipping insertion in model container [2018-09-14 18:16:13,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:16:13" (3/3) ... [2018-09-14 18:16:13,833 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label50_true-unreach-call.c [2018-09-14 18:16:13,843 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:16:13,853 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:16:13,911 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:16:13,912 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:16:13,912 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:16:13,912 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:16:13,912 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:16:13,912 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:16:13,913 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:16:13,913 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:16:13,913 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:16:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-14 18:16:13,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-14 18:16:13,963 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:13,964 INFO L376 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] [2018-09-14 18:16:13,965 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:13,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1313897628, now seen corresponding path program 1 times [2018-09-14 18:16:13,974 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:14,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:14,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:14,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:14,025 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:14,442 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:16:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:16:14,600 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:16:14,601 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:16:14,601 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:14,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:16:14,626 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:16:14,629 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:16:14,633 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-14 18:16:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:21,621 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-14 18:16:21,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:16:21,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-09-14 18:16:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:21,655 INFO L225 Difference]: With dead ends: 2251 [2018-09-14 18:16:21,656 INFO L226 Difference]: Without dead ends: 1474 [2018-09-14 18:16:21,667 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:16:21,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-14 18:16:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-14 18:16:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-14 18:16:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-09-14 18:16:21,822 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 70 [2018-09-14 18:16:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:21,825 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-09-14 18:16:21,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:16:21,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-09-14 18:16:21,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-09-14 18:16:21,840 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:21,841 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:16:21,841 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash -574735317, now seen corresponding path program 1 times [2018-09-14 18:16:21,842 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:21,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:21,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:21,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:21,845 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:16:22,228 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:16:22,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:16:22,228 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:22,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:16:22,230 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:16:22,230 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:16:22,231 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-09-14 18:16:30,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:30,975 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-09-14 18:16:30,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:16:30,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-09-14 18:16:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:30,997 INFO L225 Difference]: With dead ends: 4419 [2018-09-14 18:16:30,997 INFO L226 Difference]: Without dead ends: 2951 [2018-09-14 18:16:31,002 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:16:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-09-14 18:16:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-09-14 18:16:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-09-14 18:16:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-09-14 18:16:31,105 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 159 [2018-09-14 18:16:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:31,106 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-09-14 18:16:31,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:16:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-09-14 18:16:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-14 18:16:31,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:31,112 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:16:31,113 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1205378606, now seen corresponding path program 1 times [2018-09-14 18:16:31,113 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:31,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:31,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:31,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:31,115 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:31,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:16:31,438 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:16:31,439 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:16:31,439 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:31,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:16:31,440 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:16:31,440 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:16:31,440 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-09-14 18:16:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:37,248 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-09-14 18:16:37,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:16:37,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2018-09-14 18:16:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:37,270 INFO L225 Difference]: With dead ends: 6669 [2018-09-14 18:16:37,270 INFO L226 Difference]: Without dead ends: 3747 [2018-09-14 18:16:37,278 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:16:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-09-14 18:16:37,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-09-14 18:16:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-09-14 18:16:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-09-14 18:16:37,398 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 206 [2018-09-14 18:16:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:37,398 INFO L480 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-09-14 18:16:37,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:16:37,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-09-14 18:16:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-14 18:16:37,403 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:37,403 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:16:37,403 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:37,404 INFO L82 PathProgramCache]: Analyzing trace with hash 393503562, now seen corresponding path program 1 times [2018-09-14 18:16:37,404 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:37,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:37,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:37,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:37,405 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:37,711 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:16:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:16:37,915 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:16:37,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:16:37,915 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:37,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:16:37,916 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:16:37,916 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:16:37,917 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-09-14 18:16:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:43,444 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-09-14 18:16:43,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:16:43,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-09-14 18:16:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:43,572 INFO L225 Difference]: With dead ends: 9623 [2018-09-14 18:16:43,573 INFO L226 Difference]: Without dead ends: 5940 [2018-09-14 18:16:43,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:16:43,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-09-14 18:16:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-09-14 18:16:43,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-09-14 18:16:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-09-14 18:16:43,708 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 208 [2018-09-14 18:16:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:43,709 INFO L480 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-09-14 18:16:43,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:16:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-09-14 18:16:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-14 18:16:43,716 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:43,716 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-09-14 18:16:43,717 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:43,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1692616840, now seen corresponding path program 1 times [2018-09-14 18:16:43,717 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:43,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:43,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:43,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:43,719 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-14 18:16:43,938 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:16:43,939 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:16:43,939 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:43,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:16:43,940 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:16:43,940 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:16:43,940 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-09-14 18:16:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:51,556 INFO L93 Difference]: Finished difference Result 22501 states and 31632 transitions. [2018-09-14 18:16:51,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:16:51,556 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 266 [2018-09-14 18:16:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:51,634 INFO L225 Difference]: With dead ends: 22501 [2018-09-14 18:16:51,634 INFO L226 Difference]: Without dead ends: 16618 [2018-09-14 18:16:51,669 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:16:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2018-09-14 18:16:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 16618. [2018-09-14 18:16:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16618 states. [2018-09-14 18:16:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16618 states to 16618 states and 21854 transitions. [2018-09-14 18:16:52,180 INFO L78 Accepts]: Start accepts. Automaton has 16618 states and 21854 transitions. Word has length 266 [2018-09-14 18:16:52,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:52,180 INFO L480 AbstractCegarLoop]: Abstraction has 16618 states and 21854 transitions. [2018-09-14 18:16:52,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:16:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 16618 states and 21854 transitions. [2018-09-14 18:16:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-14 18:16:52,197 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:52,197 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:16:52,197 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:52,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1237035280, now seen corresponding path program 1 times [2018-09-14 18:16:52,198 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:52,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:52,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:52,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:52,199 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 167 proven. 61 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:16:52,612 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:52,613 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-14 18:16:52,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:52,621 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:52,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-09-14 18:16:52,974 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-09-14 18:16:53,317 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:16:53,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-09-14 18:16:53,317 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:53,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:16:53,318 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:16:53,318 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-14 18:16:53,318 INFO L87 Difference]: Start difference. First operand 16618 states and 21854 transitions. Second operand 3 states. [2018-09-14 18:16:58,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:58,002 INFO L93 Difference]: Finished difference Result 33230 states and 43726 transitions. [2018-09-14 18:16:58,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:16:58,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 310 [2018-09-14 18:16:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:58,081 INFO L225 Difference]: With dead ends: 33230 [2018-09-14 18:16:58,081 INFO L226 Difference]: Without dead ends: 16618 [2018-09-14 18:16:58,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-14 18:16:58,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2018-09-14 18:16:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 15907. [2018-09-14 18:16:58,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15907 states. [2018-09-14 18:16:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15907 states to 15907 states and 20379 transitions. [2018-09-14 18:16:58,746 INFO L78 Accepts]: Start accepts. Automaton has 15907 states and 20379 transitions. Word has length 310 [2018-09-14 18:16:58,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:58,747 INFO L480 AbstractCegarLoop]: Abstraction has 15907 states and 20379 transitions. [2018-09-14 18:16:58,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:16:58,747 INFO L276 IsEmpty]: Start isEmpty. Operand 15907 states and 20379 transitions. [2018-09-14 18:16:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-14 18:16:58,774 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:58,775 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:16:58,775 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:58,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1952615328, now seen corresponding path program 1 times [2018-09-14 18:16:58,776 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:58,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:58,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:58,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:58,781 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 126 proven. 86 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:16:59,389 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:59,389 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-14 18:16:59,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:59,407 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:59,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 18:16:59,646 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 126 proven. 86 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:16:59,896 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:16:59,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-09-14 18:16:59,896 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:59,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:16:59,897 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:16:59,897 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:16:59,898 INFO L87 Difference]: Start difference. First operand 15907 states and 20379 transitions. Second operand 5 states. [2018-09-14 18:17:07,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:17:07,768 INFO L93 Difference]: Finished difference Result 47401 states and 62254 transitions. [2018-09-14 18:17:07,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:17:07,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 414 [2018-09-14 18:17:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:17:07,872 INFO L225 Difference]: With dead ends: 47401 [2018-09-14 18:17:07,873 INFO L226 Difference]: Without dead ends: 31500 [2018-09-14 18:17:07,919 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 826 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:17:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31500 states. [2018-09-14 18:17:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31500 to 31380. [2018-09-14 18:17:08,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31380 states. [2018-09-14 18:17:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31380 states to 31380 states and 38667 transitions. [2018-09-14 18:17:08,524 INFO L78 Accepts]: Start accepts. Automaton has 31380 states and 38667 transitions. Word has length 414 [2018-09-14 18:17:08,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:17:08,524 INFO L480 AbstractCegarLoop]: Abstraction has 31380 states and 38667 transitions. [2018-09-14 18:17:08,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:17:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 31380 states and 38667 transitions. [2018-09-14 18:17:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2018-09-14 18:17:08,583 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:17:08,584 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:17:08,584 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:17:08,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1256905873, now seen corresponding path program 1 times [2018-09-14 18:17:08,584 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:17:08,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:08,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:08,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:08,586 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:17:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 273 proven. 80 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 18:17:09,336 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:09,336 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-14 18:17:09,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:09,350 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:09,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 18:17:10,052 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 273 proven. 80 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 18:17:10,957 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:10,957 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:17:10,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:10,974 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:11,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 18:17:11,531 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 273 proven. 80 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 18:17:11,905 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:17:11,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 18:17:11,905 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:17:11,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:17:11,906 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:17:11,906 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:17:11,907 INFO L87 Difference]: Start difference. First operand 31380 states and 38667 transitions. Second operand 9 states. [2018-09-14 18:17:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:17:27,186 INFO L93 Difference]: Finished difference Result 85812 states and 111633 transitions. [2018-09-14 18:17:27,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-14 18:17:27,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 511 [2018-09-14 18:17:27,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:17:27,521 INFO L225 Difference]: With dead ends: 85812 [2018-09-14 18:17:27,522 INFO L226 Difference]: Without dead ends: 54331 [2018-09-14 18:17:27,709 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2076 GetRequests, 2046 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2018-09-14 18:17:27,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54331 states. [2018-09-14 18:17:29,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54331 to 53430. [2018-09-14 18:17:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53430 states. [2018-09-14 18:17:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53430 states to 53430 states and 66383 transitions. [2018-09-14 18:17:29,264 INFO L78 Accepts]: Start accepts. Automaton has 53430 states and 66383 transitions. Word has length 511 [2018-09-14 18:17:29,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:17:29,264 INFO L480 AbstractCegarLoop]: Abstraction has 53430 states and 66383 transitions. [2018-09-14 18:17:29,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:17:29,264 INFO L276 IsEmpty]: Start isEmpty. Operand 53430 states and 66383 transitions. [2018-09-14 18:17:29,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2018-09-14 18:17:29,369 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:17:29,370 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2018-09-14 18:17:29,370 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:17:29,371 INFO L82 PathProgramCache]: Analyzing trace with hash 777101679, now seen corresponding path program 1 times [2018-09-14 18:17:29,371 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:17:29,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:29,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:29,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:29,372 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:17:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 289 proven. 96 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:17:30,153 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:30,153 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-14 18:17:30,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:30,166 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:30,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 18:17:30,826 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 289 proven. 96 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:17:31,129 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:31,129 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:17:31,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:31,145 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:31,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 18:17:32,541 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 289 proven. 96 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 18:17:32,887 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:17:32,887 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 18:17:32,887 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:17:32,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:17:32,888 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:17:32,888 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:17:32,889 INFO L87 Difference]: Start difference. First operand 53430 states and 66383 transitions. Second operand 9 states. [2018-09-14 18:18:01,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:18:01,762 INFO L93 Difference]: Finished difference Result 167115 states and 280703 transitions. [2018-09-14 18:18:01,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-14 18:18:01,764 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 543 [2018-09-14 18:18:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:18:02,914 INFO L225 Difference]: With dead ends: 167115 [2018-09-14 18:18:02,915 INFO L226 Difference]: Without dead ends: 100129 [2018-09-14 18:18:03,816 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2264 GetRequests, 2205 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=683, Invalid=2857, Unknown=0, NotChecked=0, Total=3540 [2018-09-14 18:18:03,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100129 states. [2018-09-14 18:18:07,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100129 to 95189. [2018-09-14 18:18:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95189 states. [2018-09-14 18:18:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95189 states to 95189 states and 132794 transitions. [2018-09-14 18:18:07,742 INFO L78 Accepts]: Start accepts. Automaton has 95189 states and 132794 transitions. Word has length 543 [2018-09-14 18:18:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:18:07,743 INFO L480 AbstractCegarLoop]: Abstraction has 95189 states and 132794 transitions. [2018-09-14 18:18:07,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:18:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 95189 states and 132794 transitions. [2018-09-14 18:18:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-09-14 18:18:07,811 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:18:07,812 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:18:07,812 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:18:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2061242137, now seen corresponding path program 1 times [2018-09-14 18:18:07,813 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:18:07,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:07,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:07,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:07,814 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:18:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 171 proven. 71 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 18:18:08,454 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:18:08,454 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:18:08,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:08,463 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:18:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:08,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:18:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:18:09,487 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:18:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:18:09,758 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:18:09,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 18:18:09,759 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:18:09,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:18:09,760 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:18:09,760 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:18:09,760 INFO L87 Difference]: Start difference. First operand 95189 states and 132794 transitions. Second operand 3 states. [2018-09-14 18:18:16,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:18:16,147 INFO L93 Difference]: Finished difference Result 188890 states and 263812 transitions. [2018-09-14 18:18:16,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:18:16,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 581 [2018-09-14 18:18:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:18:16,509 INFO L225 Difference]: With dead ends: 188890 [2018-09-14 18:18:16,509 INFO L226 Difference]: Without dead ends: 94410 [2018-09-14 18:18:16,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1175 GetRequests, 1163 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:18:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94410 states. [2018-09-14 18:18:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94410 to 94407. [2018-09-14 18:18:18,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94407 states. [2018-09-14 18:18:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94407 states to 94407 states and 125697 transitions. [2018-09-14 18:18:19,000 INFO L78 Accepts]: Start accepts. Automaton has 94407 states and 125697 transitions. Word has length 581 [2018-09-14 18:18:19,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:18:19,001 INFO L480 AbstractCegarLoop]: Abstraction has 94407 states and 125697 transitions. [2018-09-14 18:18:19,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:18:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 94407 states and 125697 transitions. [2018-09-14 18:18:19,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2018-09-14 18:18:19,109 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:18:19,109 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:18:19,110 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:18:19,110 INFO L82 PathProgramCache]: Analyzing trace with hash 26572920, now seen corresponding path program 1 times [2018-09-14 18:18:19,110 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:18:19,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:19,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:19,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:19,111 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:18:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:19,690 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 18:18:19,894 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:18:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 290 proven. 223 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-09-14 18:18:22,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:18:22,064 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:18:22,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:22,071 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:18:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:22,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:18:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 18:18:22,998 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:18:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 18:18:23,851 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:18:23,851 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:18:23,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:23,881 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:18:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:24,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:18:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 18:18:24,677 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:18:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 512 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2018-09-14 18:18:25,485 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:18:25,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 22 [2018-09-14 18:18:25,486 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:18:25,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-14 18:18:25,488 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-14 18:18:25,488 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2018-09-14 18:18:25,488 INFO L87 Difference]: Start difference. First operand 94407 states and 125697 transitions. Second operand 16 states. [2018-09-14 18:18:48,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:18:48,006 INFO L93 Difference]: Finished difference Result 186449 states and 248001 transitions. [2018-09-14 18:18:48,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-14 18:18:48,008 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 830 [2018-09-14 18:18:48,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:18:48,267 INFO L225 Difference]: With dead ends: 186449 [2018-09-14 18:18:48,268 INFO L226 Difference]: Without dead ends: 87969 [2018-09-14 18:18:48,471 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3394 GetRequests, 3336 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=604, Invalid=2588, Unknown=0, NotChecked=0, Total=3192 [2018-09-14 18:18:48,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87969 states. [2018-09-14 18:18:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87969 to 86099. [2018-09-14 18:18:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86099 states. [2018-09-14 18:18:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86099 states to 86099 states and 102252 transitions. [2018-09-14 18:18:49,947 INFO L78 Accepts]: Start accepts. Automaton has 86099 states and 102252 transitions. Word has length 830 [2018-09-14 18:18:49,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:18:49,948 INFO L480 AbstractCegarLoop]: Abstraction has 86099 states and 102252 transitions. [2018-09-14 18:18:49,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-14 18:18:49,948 INFO L276 IsEmpty]: Start isEmpty. Operand 86099 states and 102252 transitions. [2018-09-14 18:18:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2018-09-14 18:18:50,024 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:18:50,025 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:18:50,025 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:18:50,026 INFO L82 PathProgramCache]: Analyzing trace with hash 774691123, now seen corresponding path program 1 times [2018-09-14 18:18:50,026 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:18:50,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:50,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:50,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:18:50,027 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:18:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:18:51,792 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:18:51,792 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:18:51,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:51,800 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:18:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:52,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:18:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:18:55,825 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:18:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:18:56,883 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:18:56,883 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:18:56,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:18:56,899 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:18:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:18:57,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:18:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:18:58,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:18:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 698 proven. 5 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:18:59,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:18:59,334 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 18:18:59,334 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:18:59,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:18:59,336 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:18:59,336 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:18:59,336 INFO L87 Difference]: Start difference. First operand 86099 states and 102252 transitions. Second operand 9 states. [2018-09-14 18:19:10,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:19:10,636 INFO L93 Difference]: Finished difference Result 183618 states and 242588 transitions. [2018-09-14 18:19:10,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 18:19:10,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 974 [2018-09-14 18:19:10,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:19:11,073 INFO L225 Difference]: With dead ends: 183618 [2018-09-14 18:19:11,073 INFO L226 Difference]: Without dead ends: 96087 [2018-09-14 18:19:11,393 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3920 GetRequests, 3892 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-14 18:19:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96087 states. [2018-09-14 18:19:13,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96087 to 95177. [2018-09-14 18:19:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95177 states. [2018-09-14 18:19:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95177 states to 95177 states and 122494 transitions. [2018-09-14 18:19:14,115 INFO L78 Accepts]: Start accepts. Automaton has 95177 states and 122494 transitions. Word has length 974 [2018-09-14 18:19:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:19:14,115 INFO L480 AbstractCegarLoop]: Abstraction has 95177 states and 122494 transitions. [2018-09-14 18:19:14,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:19:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 95177 states and 122494 transitions. [2018-09-14 18:19:14,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2018-09-14 18:19:14,180 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:19:14,181 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:19:14,181 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:19:14,181 INFO L82 PathProgramCache]: Analyzing trace with hash 692385399, now seen corresponding path program 1 times [2018-09-14 18:19:14,182 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:19:14,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:14,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:19:14,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:14,183 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:19:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:19:14,998 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:19:15,193 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:19:16,078 WARN L178 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2018-09-14 18:19:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 663 proven. 45 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-14 18:19:17,540 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:19:17,540 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:19:17,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:19:17,547 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:19:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:19:17,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:19:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2018-09-14 18:19:18,975 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:19:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 189 proven. 236 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2018-09-14 18:19:20,727 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:19:20,728 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-14 18:19:20,728 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:19:20,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:19:20,729 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:19:20,729 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:19:20,729 INFO L87 Difference]: Start difference. First operand 95177 states and 122494 transitions. Second operand 5 states. [2018-09-14 18:19:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:19:27,989 INFO L93 Difference]: Finished difference Result 192056 states and 247626 transitions. [2018-09-14 18:19:27,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:19:27,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1019 [2018-09-14 18:19:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:19:28,235 INFO L225 Difference]: With dead ends: 192056 [2018-09-14 18:19:28,236 INFO L226 Difference]: Without dead ends: 97588 [2018-09-14 18:19:28,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2054 GetRequests, 2035 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:19:28,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97588 states. [2018-09-14 18:19:29,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97588 to 97556. [2018-09-14 18:19:29,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97556 states. [2018-09-14 18:19:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97556 states to 97556 states and 124974 transitions. [2018-09-14 18:19:30,303 INFO L78 Accepts]: Start accepts. Automaton has 97556 states and 124974 transitions. Word has length 1019 [2018-09-14 18:19:30,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:19:30,304 INFO L480 AbstractCegarLoop]: Abstraction has 97556 states and 124974 transitions. [2018-09-14 18:19:30,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:19:30,304 INFO L276 IsEmpty]: Start isEmpty. Operand 97556 states and 124974 transitions. [2018-09-14 18:19:30,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1582 [2018-09-14 18:19:30,421 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:19:30,422 INFO L376 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:19:30,422 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:19:30,423 INFO L82 PathProgramCache]: Analyzing trace with hash 124526035, now seen corresponding path program 1 times [2018-09-14 18:19:30,423 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:19:30,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:30,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:19:30,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:19:30,424 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:19:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:19:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2361 backedges. 410 proven. 1248 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2018-09-14 18:19:33,915 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:19:33,915 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:19:33,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:19:33,923 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:19:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:19:34,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:19:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2361 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2018-09-14 18:19:35,662 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:19:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2361 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 1962 trivial. 0 not checked. [2018-09-14 18:19:36,667 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:19:36,668 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-14 18:19:36,668 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:19:36,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:19:36,669 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:19:36,669 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:19:36,670 INFO L87 Difference]: Start difference. First operand 97556 states and 124974 transitions. Second operand 3 states. Received shutdown request... [2018-09-14 18:19:39,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:19:39,966 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:19:39,971 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:19:39,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:19:39 BoogieIcfgContainer [2018-09-14 18:19:39,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:19:39,973 INFO L168 Benchmark]: Toolchain (without parser) took 217620.77 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -447.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-09-14 18:19:39,974 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. [2018-09-14 18:19:39,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1859.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:19:39,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 176.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:19:39,976 INFO L168 Benchmark]: Boogie Preprocessor took 657.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 815.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:19:39,977 INFO L168 Benchmark]: RCFGBuilder took 8774.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 479.5 MB). Peak memory consumption was 479.5 MB. Max. memory is 7.1 GB. [2018-09-14 18:19:39,978 INFO L168 Benchmark]: TraceAbstraction took 206145.32 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -107.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-14 18:19:39,983 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 1859.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 176.76 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 657.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 815.8 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8774.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 479.5 MB). Peak memory consumption was 479.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206145.32 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -107.5 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: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was constructing difference of abstraction (97556states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (39301 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 206.0s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 147.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5641 SDtfs, 49728 SDslu, 3366 SDs, 0 SdLazy, 94212 SolverSat, 17340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19564 GetRequests, 19304 SyntacticMatches, 39 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97556occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 9619 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 29.9s InterpolantComputationTime, 17293 NumberOfCodeBlocks, 17293 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 26874 ConstructedInterpolants, 69 QuantifiedInterpolants, 61551009 SizeOfPredicates, 12 NumberOfNonLiveVariables, 12844 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 40 InterpolantComputations, 13 PerfectInterpolantSequences, 21423/24048 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-19-39-996.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label50_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-19-39-996.csv Completed graceful shutdown