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/Problem14_label50_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:51:03,400 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:51:03,402 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:51:03,415 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:51:03,415 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:51:03,416 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:51:03,417 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:51:03,419 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:51:03,421 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:51:03,421 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:51:03,422 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:51:03,423 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:51:03,424 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:51:03,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:51:03,428 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:51:03,429 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:51:03,430 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:51:03,432 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:51:03,434 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:51:03,436 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:51:03,437 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:51:03,438 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:51:03,441 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:51:03,441 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:51:03,441 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:51:03,442 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:51:03,443 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:51:03,444 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:51:03,445 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:51:03,446 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:51:03,446 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:51:03,447 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:51:03,447 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:51:03,447 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:51:03,448 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:51:03,449 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:51:03,449 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 [2018-09-18 11:51:03,464 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:51:03,465 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:51:03,466 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:51:03,466 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:51:03,466 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:51:03,466 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:51:03,466 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:51:03,467 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:51:03,467 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:51:03,467 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:51:03,467 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:51:03,467 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:51:03,468 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:51:03,468 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:51:03,468 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:51:03,469 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:51:03,469 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:51:03,469 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:51:03,469 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:51:03,469 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:51:03,470 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:51:03,470 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:51:03,470 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:51:03,470 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:51:03,470 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:51:03,470 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:51:03,471 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:51:03,471 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:51:03,471 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:51:03,471 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:51:03,471 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:51:03,472 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:51:03,472 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:51:03,472 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:51:03,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:51:03,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:51:03,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:51:03,547 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:51:03,547 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:51:03,548 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c [2018-09-18 11:51:03,901 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9443640b5/4f1b0978a5824f19845cf9b826b35264/FLAGb8ed2077d [2018-09-18 11:51:04,269 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:51:04,270 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label50_true-unreach-call_false-termination.c [2018-09-18 11:51:04,288 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9443640b5/4f1b0978a5824f19845cf9b826b35264/FLAGb8ed2077d [2018-09-18 11:51:04,312 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9443640b5/4f1b0978a5824f19845cf9b826b35264 [2018-09-18 11:51:04,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:51:04,328 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:51:04,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:51:04,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:51:04,338 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:51:04,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:51:04" (1/1) ... [2018-09-18 11:51:04,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b9b8b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:04, skipping insertion in model container [2018-09-18 11:51:04,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:51:04" (1/1) ... [2018-09-18 11:51:04,355 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:51:04,852 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:51:04,871 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:51:05,057 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:51:05,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05 WrapperNode [2018-09-18 11:51:05,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:51:05,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:51:05,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:51:05,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:51:05,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (1/1) ... [2018-09-18 11:51:05,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (1/1) ... [2018-09-18 11:51:05,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:51:05,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:51:05,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:51:05,239 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:51:05,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (1/1) ... [2018-09-18 11:51:05,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (1/1) ... [2018-09-18 11:51:05,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (1/1) ... [2018-09-18 11:51:05,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (1/1) ... [2018-09-18 11:51:05,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (1/1) ... [2018-09-18 11:51:05,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (1/1) ... [2018-09-18 11:51:05,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (1/1) ... [2018-09-18 11:51:05,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:51:05,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:51:05,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:51:05,514 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:51:05,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (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 [2018-09-18 11:51:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:51:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:51:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:51:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:51:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:51:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:51:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:51:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:51:09,599 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:51:09,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:51:09 BoogieIcfgContainer [2018-09-18 11:51:09,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:51:09,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:51:09,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:51:09,605 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:51:09,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:51:04" (1/3) ... [2018-09-18 11:51:09,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d537b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:51:09, skipping insertion in model container [2018-09-18 11:51:09,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:51:05" (2/3) ... [2018-09-18 11:51:09,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d537b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:51:09, skipping insertion in model container [2018-09-18 11:51:09,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:51:09" (3/3) ... [2018-09-18 11:51:09,611 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label50_true-unreach-call_false-termination.c [2018-09-18 11:51:09,622 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:51:09,631 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:51:09,689 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:51:09,690 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:51:09,690 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:51:09,690 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:51:09,690 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:51:09,690 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:51:09,690 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:51:09,691 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:51:09,691 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:51:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-09-18 11:51:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-18 11:51:09,726 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:09,727 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] [2018-09-18 11:51:09,728 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:09,734 INFO L82 PathProgramCache]: Analyzing trace with hash -50157732, now seen corresponding path program 1 times [2018-09-18 11:51:09,737 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:09,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:09,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:09,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:09,790 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:51:10,227 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:51:10,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:51:10,228 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:51:10,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:51:10,251 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:51:10,252 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:51:10,255 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-09-18 11:51:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:12,108 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-09-18 11:51:12,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:51:12,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2018-09-18 11:51:12,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:12,139 INFO L225 Difference]: With dead ends: 691 [2018-09-18 11:51:12,139 INFO L226 Difference]: Without dead ends: 434 [2018-09-18 11:51:12,148 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 [2018-09-18 11:51:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-09-18 11:51:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-09-18 11:51:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-09-18 11:51:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-09-18 11:51:12,240 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 44 [2018-09-18 11:51:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:12,240 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-09-18 11:51:12,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:51:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-09-18 11:51:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-18 11:51:12,249 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:12,249 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:51:12,250 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:12,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1724157031, now seen corresponding path program 1 times [2018-09-18 11:51:12,250 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:12,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:12,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:12,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:12,252 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:51:12,583 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:51:12,583 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:51:12,584 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:51:12,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:51:12,586 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:51:12,586 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:51:12,587 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-09-18 11:51:14,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:14,569 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-09-18 11:51:14,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:51:14,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-09-18 11:51:14,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:14,577 INFO L225 Difference]: With dead ends: 1062 [2018-09-18 11:51:14,577 INFO L226 Difference]: Without dead ends: 634 [2018-09-18 11:51:14,581 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 [2018-09-18 11:51:14,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-09-18 11:51:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-09-18 11:51:14,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-09-18 11:51:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-09-18 11:51:14,628 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 131 [2018-09-18 11:51:14,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:14,629 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-09-18 11:51:14,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:51:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-09-18 11:51:14,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-18 11:51:14,633 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:14,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:51:14,634 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:14,634 INFO L82 PathProgramCache]: Analyzing trace with hash 415093804, now seen corresponding path program 1 times [2018-09-18 11:51:14,635 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:14,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:14,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:14,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:14,637 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:51:14,876 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:51:14,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:51:14,877 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:51:14,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:51:14,878 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:51:14,878 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:51:14,878 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-09-18 11:51:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:18,946 INFO L93 Difference]: Finished difference Result 2352 states and 4010 transitions. [2018-09-18 11:51:18,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:51:18,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2018-09-18 11:51:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:18,966 INFO L225 Difference]: With dead ends: 2352 [2018-09-18 11:51:18,967 INFO L226 Difference]: Without dead ends: 1733 [2018-09-18 11:51:18,973 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:51:18,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-09-18 11:51:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-09-18 11:51:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-09-18 11:51:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2668 transitions. [2018-09-18 11:51:19,074 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2668 transitions. Word has length 140 [2018-09-18 11:51:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:19,075 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2668 transitions. [2018-09-18 11:51:19,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:51:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2668 transitions. [2018-09-18 11:51:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-09-18 11:51:19,100 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:19,101 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:51:19,101 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:19,102 INFO L82 PathProgramCache]: Analyzing trace with hash -872463117, now seen corresponding path program 1 times [2018-09-18 11:51:19,102 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:19,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:19,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:19,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:19,106 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:19,644 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-09-18 11:51:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 147 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:51:20,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:20,414 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 [2018-09-18 11:51:20,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:20,426 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:20,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:21,195 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 11:51:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 11:51:21,333 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:21,658 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2018-09-18 11:51:22,299 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 11:51:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 74 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:51:22,773 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:51:22,773 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 5] total 17 [2018-09-18 11:51:22,773 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:51:22,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:51:22,774 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:51:22,775 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-09-18 11:51:22,775 INFO L87 Difference]: Start difference. First operand 1733 states and 2668 transitions. Second operand 5 states. [2018-09-18 11:51:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:28,291 INFO L93 Difference]: Finished difference Result 4837 states and 7428 transitions. [2018-09-18 11:51:28,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:51:28,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 277 [2018-09-18 11:51:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:28,311 INFO L225 Difference]: With dead ends: 4837 [2018-09-18 11:51:28,311 INFO L226 Difference]: Without dead ends: 3110 [2018-09-18 11:51:28,322 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 550 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-09-18 11:51:28,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2018-09-18 11:51:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3057. [2018-09-18 11:51:28,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3057 states. [2018-09-18 11:51:28,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4474 transitions. [2018-09-18 11:51:28,422 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4474 transitions. Word has length 277 [2018-09-18 11:51:28,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:28,422 INFO L480 AbstractCegarLoop]: Abstraction has 3057 states and 4474 transitions. [2018-09-18 11:51:28,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:51:28,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4474 transitions. [2018-09-18 11:51:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-18 11:51:28,442 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:28,443 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:51:28,443 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:28,443 INFO L82 PathProgramCache]: Analyzing trace with hash 594401252, now seen corresponding path program 1 times [2018-09-18 11:51:28,444 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:28,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:28,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:28,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:28,445 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 199 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:51:29,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:29,409 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 [2018-09-18 11:51:29,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:29,418 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:29,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 303 proven. 53 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 11:51:30,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 121 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:51:30,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:30,820 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:51:30,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:30,837 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:31,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:31,489 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 303 proven. 53 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 11:51:31,489 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 121 proven. 268 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:51:32,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:51:32,315 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8, 8, 8] total 26 [2018-09-18 11:51:32,315 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:51:32,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 11:51:32,316 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 11:51:32,317 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-09-18 11:51:32,317 INFO L87 Difference]: Start difference. First operand 3057 states and 4474 transitions. Second operand 15 states. [2018-09-18 11:51:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:36,760 INFO L93 Difference]: Finished difference Result 7263 states and 10608 transitions. [2018-09-18 11:51:36,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-18 11:51:36,760 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 362 [2018-09-18 11:51:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:36,783 INFO L225 Difference]: With dead ends: 7263 [2018-09-18 11:51:36,784 INFO L226 Difference]: Without dead ends: 4196 [2018-09-18 11:51:36,802 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 1447 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2018-09-18 11:51:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2018-09-18 11:51:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 3781. [2018-09-18 11:51:36,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3781 states. [2018-09-18 11:51:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 4902 transitions. [2018-09-18 11:51:36,911 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 4902 transitions. Word has length 362 [2018-09-18 11:51:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:36,912 INFO L480 AbstractCegarLoop]: Abstraction has 3781 states and 4902 transitions. [2018-09-18 11:51:36,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 11:51:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 4902 transitions. [2018-09-18 11:51:36,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-09-18 11:51:36,931 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:36,932 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:51:36,932 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:36,932 INFO L82 PathProgramCache]: Analyzing trace with hash 852160799, now seen corresponding path program 1 times [2018-09-18 11:51:36,932 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:36,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:36,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:36,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:36,934 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 297 proven. 40 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-09-18 11:51:38,204 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:38,204 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:51:38,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:38,217 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:38,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-09-18 11:51:38,585 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 111 proven. 210 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-18 11:51:38,974 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:51:38,974 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 5] total 16 [2018-09-18 11:51:38,974 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:51:38,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:51:38,976 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:51:38,976 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:51:38,976 INFO L87 Difference]: Start difference. First operand 3781 states and 4902 transitions. Second operand 5 states. [2018-09-18 11:51:41,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:41,121 INFO L93 Difference]: Finished difference Result 8377 states and 10824 transitions. [2018-09-18 11:51:41,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:51:41,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 387 [2018-09-18 11:51:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:41,148 INFO L225 Difference]: With dead ends: 8377 [2018-09-18 11:51:41,148 INFO L226 Difference]: Without dead ends: 4789 [2018-09-18 11:51:41,163 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 769 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-09-18 11:51:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4789 states. [2018-09-18 11:51:41,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4789 to 4461. [2018-09-18 11:51:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4461 states. [2018-09-18 11:51:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 5500 transitions. [2018-09-18 11:51:41,261 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 5500 transitions. Word has length 387 [2018-09-18 11:51:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:41,262 INFO L480 AbstractCegarLoop]: Abstraction has 4461 states and 5500 transitions. [2018-09-18 11:51:41,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:51:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 5500 transitions. [2018-09-18 11:51:41,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-09-18 11:51:41,283 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:41,283 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:51:41,283 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:41,284 INFO L82 PathProgramCache]: Analyzing trace with hash -734705564, now seen corresponding path program 1 times [2018-09-18 11:51:41,284 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:41,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:41,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:41,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:41,285 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 380 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-18 11:51:42,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:42,180 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 [2018-09-18 11:51:42,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:42,189 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:42,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 666 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-18 11:51:42,457 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 380 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-18 11:51:43,025 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:43,026 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 [2018-09-18 11:51:43,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:43,043 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:43,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 662 proven. 6 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-18 11:51:43,870 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:44,175 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 11:51:44,408 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 11:51:44,963 WARN L178 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-09-18 11:51:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 380 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-09-18 11:51:45,251 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:51:45,252 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 8 [2018-09-18 11:51:45,252 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:51:45,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 11:51:45,253 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 11:51:45,255 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:51:45,255 INFO L87 Difference]: Start difference. First operand 4461 states and 5500 transitions. Second operand 7 states. [2018-09-18 11:51:47,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:47,769 INFO L93 Difference]: Finished difference Result 10313 states and 13068 transitions. [2018-09-18 11:51:47,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 11:51:47,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 498 [2018-09-18 11:51:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:47,797 INFO L225 Difference]: With dead ends: 10313 [2018-09-18 11:51:47,797 INFO L226 Difference]: Without dead ends: 6045 [2018-09-18 11:51:47,820 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2011 GetRequests, 1989 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:51:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2018-09-18 11:51:47,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 5780. [2018-09-18 11:51:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5780 states. [2018-09-18 11:51:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5780 states to 5780 states and 6951 transitions. [2018-09-18 11:51:47,987 INFO L78 Accepts]: Start accepts. Automaton has 5780 states and 6951 transitions. Word has length 498 [2018-09-18 11:51:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:47,988 INFO L480 AbstractCegarLoop]: Abstraction has 5780 states and 6951 transitions. [2018-09-18 11:51:47,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 11:51:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5780 states and 6951 transitions. [2018-09-18 11:51:48,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-09-18 11:51:48,009 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:48,009 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:51:48,010 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:48,010 INFO L82 PathProgramCache]: Analyzing trace with hash -923919085, now seen corresponding path program 1 times [2018-09-18 11:51:48,010 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:48,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:48,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:48,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:48,012 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:48,694 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:51:48,887 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:51:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 516 proven. 482 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-09-18 11:51:49,906 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:49,907 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 [2018-09-18 11:51:49,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:49,914 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:50,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 876 proven. 2 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-18 11:51:50,509 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 510 proven. 112 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-09-18 11:51:51,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:51,302 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:51:51,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:51,318 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:51:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:51,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 668 proven. 210 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-09-18 11:51:52,123 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 221 proven. 690 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-09-18 11:51:53,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:51:53,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 8, 8] total 16 [2018-09-18 11:51:53,113 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:51:53,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 11:51:53,114 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 11:51:53,115 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:51:53,115 INFO L87 Difference]: Start difference. First operand 5780 states and 6951 transitions. Second operand 13 states. [2018-09-18 11:51:54,251 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2018-09-18 11:51:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:51:56,580 INFO L93 Difference]: Finished difference Result 11679 states and 14483 transitions. [2018-09-18 11:51:56,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-18 11:51:56,580 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 583 [2018-09-18 11:51:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:51:56,614 INFO L225 Difference]: With dead ends: 11679 [2018-09-18 11:51:56,614 INFO L226 Difference]: Without dead ends: 6151 [2018-09-18 11:51:56,635 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2360 GetRequests, 2322 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2018-09-18 11:51:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2018-09-18 11:51:56,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 5973. [2018-09-18 11:51:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5973 states. [2018-09-18 11:51:56,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 7002 transitions. [2018-09-18 11:51:56,781 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 7002 transitions. Word has length 583 [2018-09-18 11:51:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:51:56,782 INFO L480 AbstractCegarLoop]: Abstraction has 5973 states and 7002 transitions. [2018-09-18 11:51:56,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-18 11:51:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 7002 transitions. [2018-09-18 11:51:56,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2018-09-18 11:51:56,799 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:51:56,800 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:51:56,800 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:51:56,801 INFO L82 PathProgramCache]: Analyzing trace with hash 859413863, now seen corresponding path program 2 times [2018-09-18 11:51:56,801 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:51:56,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:56,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:51:56,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:51:56,802 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:51:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:51:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 542 proven. 534 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-09-18 11:51:58,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:58,369 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:51:58,377 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 11:51:58,378 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 11:51:58,552 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 11:51:58,552 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 11:51:58,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:51:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 928 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-09-18 11:51:59,046 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:51:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 536 proven. 112 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-09-18 11:51:59,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:51:59,903 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:51:59,920 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 11:51:59,920 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 11:52:00,259 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 11:52:00,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 11:52:00,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 913 proven. 17 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-09-18 11:52:01,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:01,549 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-09-18 11:52:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1293 backedges. 215 proven. 748 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-09-18 11:52:03,682 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:52:03,683 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 10, 11] total 31 [2018-09-18 11:52:03,683 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:52:03,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-18 11:52:03,685 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-18 11:52:03,686 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2018-09-18 11:52:03,686 INFO L87 Difference]: Start difference. First operand 5973 states and 7002 transitions. Second operand 18 states. [2018-09-18 11:52:05,911 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2018-09-18 11:52:08,590 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-09-18 11:52:09,015 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-09-18 11:52:09,275 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-09-18 11:52:11,429 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2018-09-18 11:52:11,794 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 34 [2018-09-18 11:52:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:12,271 INFO L93 Difference]: Finished difference Result 15243 states and 18456 transitions. [2018-09-18 11:52:12,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-18 11:52:12,272 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 609 [2018-09-18 11:52:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:12,305 INFO L225 Difference]: With dead ends: 15243 [2018-09-18 11:52:12,306 INFO L226 Difference]: Without dead ends: 9276 [2018-09-18 11:52:12,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2513 GetRequests, 2434 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1187 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=813, Invalid=3609, Unknown=0, NotChecked=0, Total=4422 [2018-09-18 11:52:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9276 states. [2018-09-18 11:52:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9276 to 8444. [2018-09-18 11:52:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8444 states. [2018-09-18 11:52:12,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8444 states to 8444 states and 9597 transitions. [2018-09-18 11:52:12,502 INFO L78 Accepts]: Start accepts. Automaton has 8444 states and 9597 transitions. Word has length 609 [2018-09-18 11:52:12,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:12,503 INFO L480 AbstractCegarLoop]: Abstraction has 8444 states and 9597 transitions. [2018-09-18 11:52:12,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-18 11:52:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 8444 states and 9597 transitions. [2018-09-18 11:52:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2018-09-18 11:52:12,522 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:12,523 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:52:12,523 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:12,524 INFO L82 PathProgramCache]: Analyzing trace with hash -89647657, now seen corresponding path program 1 times [2018-09-18 11:52:12,524 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:12,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:12,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 11:52:12,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:12,525 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 543 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-09-18 11:52:13,627 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:13,627 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:52:13,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:13,644 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:13,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:13,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 949 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-09-18 11:52:14,253 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 543 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-09-18 11:52:14,652 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:14,652 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:52:14,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:14,667 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:15,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 949 proven. 2 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-09-18 11:52:15,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 543 proven. 119 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-09-18 11:52:15,749 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:52:15,749 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-18 11:52:15,749 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:52:15,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 11:52:15,752 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 11:52:15,752 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:52:15,752 INFO L87 Difference]: Start difference. First operand 8444 states and 9597 transitions. Second operand 7 states. [2018-09-18 11:52:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:19,712 INFO L93 Difference]: Finished difference Result 23247 states and 30098 transitions. [2018-09-18 11:52:19,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-18 11:52:19,712 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 683 [2018-09-18 11:52:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:19,790 INFO L225 Difference]: With dead ends: 23247 [2018-09-18 11:52:19,790 INFO L226 Difference]: Without dead ends: 14994 [2018-09-18 11:52:19,845 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2748 GetRequests, 2733 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-18 11:52:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14994 states. [2018-09-18 11:52:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14994 to 14675. [2018-09-18 11:52:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14675 states. [2018-09-18 11:52:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14675 states to 14675 states and 16966 transitions. [2018-09-18 11:52:20,221 INFO L78 Accepts]: Start accepts. Automaton has 14675 states and 16966 transitions. Word has length 683 [2018-09-18 11:52:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:20,223 INFO L480 AbstractCegarLoop]: Abstraction has 14675 states and 16966 transitions. [2018-09-18 11:52:20,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 11:52:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 14675 states and 16966 transitions. [2018-09-18 11:52:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2018-09-18 11:52:20,249 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:20,250 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:52:20,250 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:20,251 INFO L82 PathProgramCache]: Analyzing trace with hash -700324936, now seen corresponding path program 1 times [2018-09-18 11:52:20,251 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:20,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:20,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:20,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:20,252 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:21,644 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-18 11:52:22,163 WARN L178 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-18 11:52:22,407 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-09-18 11:52:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 796 proven. 835 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2018-09-18 11:52:23,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:23,441 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 [2018-09-18 11:52:23,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:23,449 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:23,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:24,520 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-18 11:52:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 1329 proven. 2 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2018-09-18 11:52:25,006 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:26,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 784 proven. 112 refuted. 0 times theorem prover too weak. 1334 trivial. 0 not checked. [2018-09-18 11:52:26,091 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:26,091 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:52:26,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:26,108 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:26,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 1321 proven. 10 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2018-09-18 11:52:27,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2230 backedges. 289 proven. 1075 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2018-09-18 11:52:28,853 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:52:28,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5, 8, 8] total 28 [2018-09-18 11:52:28,854 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:52:28,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-18 11:52:28,856 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-18 11:52:28,856 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2018-09-18 11:52:28,857 INFO L87 Difference]: Start difference. First operand 14675 states and 16966 transitions. Second operand 17 states. [2018-09-18 11:52:36,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:36,456 INFO L93 Difference]: Finished difference Result 29008 states and 35604 transitions. [2018-09-18 11:52:36,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-18 11:52:36,456 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 772 [2018-09-18 11:52:36,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:36,516 INFO L225 Difference]: With dead ends: 29008 [2018-09-18 11:52:36,516 INFO L226 Difference]: Without dead ends: 13740 [2018-09-18 11:52:36,577 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3171 GetRequests, 3093 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1093, Invalid=4019, Unknown=0, NotChecked=0, Total=5112 [2018-09-18 11:52:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13740 states. [2018-09-18 11:52:36,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13740 to 13292. [2018-09-18 11:52:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13292 states. [2018-09-18 11:52:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13292 states to 13292 states and 14978 transitions. [2018-09-18 11:52:36,850 INFO L78 Accepts]: Start accepts. Automaton has 13292 states and 14978 transitions. Word has length 772 [2018-09-18 11:52:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:36,851 INFO L480 AbstractCegarLoop]: Abstraction has 13292 states and 14978 transitions. [2018-09-18 11:52:36,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-18 11:52:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 13292 states and 14978 transitions. [2018-09-18 11:52:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2018-09-18 11:52:36,870 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:36,871 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:52:36,871 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:36,872 INFO L82 PathProgramCache]: Analyzing trace with hash -664045017, now seen corresponding path program 1 times [2018-09-18 11:52:36,872 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:36,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:36,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:36,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:36,873 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 791 proven. 845 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-09-18 11:52:40,389 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:40,389 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:52:40,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:40,398 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:40,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 1269 proven. 2 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-09-18 11:52:41,051 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 748 proven. 119 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2018-09-18 11:52:41,643 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:52:41,644 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 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:52:41,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:41,662 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:52:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:42,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:52:42,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 1269 proven. 2 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked. [2018-09-18 11:52:42,400 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:52:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1970 backedges. 748 proven. 119 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2018-09-18 11:52:42,948 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:52:42,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5, 5, 5] total 22 [2018-09-18 11:52:42,949 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:52:42,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-18 11:52:42,951 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-18 11:52:42,951 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-09-18 11:52:42,952 INFO L87 Difference]: Start difference. First operand 13292 states and 14978 transitions. Second operand 20 states. [2018-09-18 11:52:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:52:57,693 INFO L93 Difference]: Finished difference Result 30179 states and 34655 transitions. [2018-09-18 11:52:57,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-18 11:52:57,694 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 843 [2018-09-18 11:52:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:52:57,753 INFO L225 Difference]: With dead ends: 30179 [2018-09-18 11:52:57,753 INFO L226 Difference]: Without dead ends: 16752 [2018-09-18 11:52:57,795 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3536 GetRequests, 3432 SyntacticMatches, 6 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3298 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1374, Invalid=8526, Unknown=0, NotChecked=0, Total=9900 [2018-09-18 11:52:57,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16752 states. [2018-09-18 11:52:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16752 to 16098. [2018-09-18 11:52:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16098 states. [2018-09-18 11:52:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16098 states to 16098 states and 17825 transitions. [2018-09-18 11:52:58,262 INFO L78 Accepts]: Start accepts. Automaton has 16098 states and 17825 transitions. Word has length 843 [2018-09-18 11:52:58,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:52:58,263 INFO L480 AbstractCegarLoop]: Abstraction has 16098 states and 17825 transitions. [2018-09-18 11:52:58,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-18 11:52:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16098 states and 17825 transitions. [2018-09-18 11:52:58,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2018-09-18 11:52:58,293 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:52:58,294 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:52:58,294 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:52:58,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1821769112, now seen corresponding path program 1 times [2018-09-18 11:52:58,296 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:52:58,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:58,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:52:58,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:52:58,298 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:52:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:52:59,376 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-18 11:53:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 1173 proven. 2247 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2018-09-18 11:53:03,407 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:03,407 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:53:03,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:03,418 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:03,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 1170 proven. 2 refuted. 0 times theorem prover too weak. 2595 trivial. 0 not checked. [2018-09-18 11:53:04,533 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 1170 proven. 2 refuted. 0 times theorem prover too weak. 2595 trivial. 0 not checked. [2018-09-18 11:53:06,046 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:06,046 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 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:53:06,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:06,146 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:06,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:07,843 WARN L178 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 15 [2018-09-18 11:53:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 2282 proven. 6 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2018-09-18 11:53:08,745 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3767 backedges. 1537 proven. 271 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2018-09-18 11:53:09,945 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:53:09,946 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 5, 5, 7, 8] total 44 [2018-09-18 11:53:09,946 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:53:09,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-18 11:53:09,948 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-18 11:53:09,948 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1700, Unknown=0, NotChecked=0, Total=1892 [2018-09-18 11:53:09,949 INFO L87 Difference]: Start difference. First operand 16098 states and 17825 transitions. Second operand 31 states. [2018-09-18 11:53:12,642 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2018-09-18 11:53:13,413 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 35 [2018-09-18 11:53:13,919 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 36 [2018-09-18 11:53:14,094 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 28 [2018-09-18 11:53:18,907 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2018-09-18 11:53:19,251 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 35 [2018-09-18 11:53:19,674 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 32 [2018-09-18 11:53:19,953 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-09-18 11:53:20,694 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2018-09-18 11:53:21,132 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2018-09-18 11:53:22,408 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2018-09-18 11:53:24,333 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2018-09-18 11:53:25,662 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 32 [2018-09-18 11:53:27,015 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2018-09-18 11:53:27,609 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2018-09-18 11:53:28,420 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2018-09-18 11:53:28,798 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2018-09-18 11:53:29,354 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2018-09-18 11:53:30,405 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2018-09-18 11:53:30,684 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-09-18 11:53:31,078 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2018-09-18 11:53:31,941 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2018-09-18 11:53:32,461 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-09-18 11:53:32,988 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2018-09-18 11:53:34,449 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2018-09-18 11:53:36,523 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2018-09-18 11:53:36,824 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2018-09-18 11:53:37,341 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2018-09-18 11:53:38,870 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-09-18 11:53:39,934 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 30 [2018-09-18 11:53:40,215 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-09-18 11:53:41,494 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2018-09-18 11:53:44,509 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2018-09-18 11:53:44,759 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2018-09-18 11:53:46,438 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2018-09-18 11:53:46,862 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-09-18 11:53:48,362 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2018-09-18 11:53:49,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:53:49,013 INFO L93 Difference]: Finished difference Result 38005 states and 47630 transitions. [2018-09-18 11:53:49,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-09-18 11:53:49,013 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 1100 [2018-09-18 11:53:49,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:53:49,111 INFO L225 Difference]: With dead ends: 38005 [2018-09-18 11:53:49,111 INFO L226 Difference]: Without dead ends: 20433 [2018-09-18 11:53:49,205 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4628 GetRequests, 4444 SyntacticMatches, 6 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11223 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=4173, Invalid=28047, Unknown=0, NotChecked=0, Total=32220 [2018-09-18 11:53:49,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20433 states. [2018-09-18 11:53:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20433 to 17721. [2018-09-18 11:53:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17721 states. [2018-09-18 11:53:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17721 states to 17721 states and 20350 transitions. [2018-09-18 11:53:49,745 INFO L78 Accepts]: Start accepts. Automaton has 17721 states and 20350 transitions. Word has length 1100 [2018-09-18 11:53:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:53:49,746 INFO L480 AbstractCegarLoop]: Abstraction has 17721 states and 20350 transitions. [2018-09-18 11:53:49,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-18 11:53:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 17721 states and 20350 transitions. [2018-09-18 11:53:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1149 [2018-09-18 11:53:49,769 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:53:49,770 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:53:49,770 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:53:49,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1961239800, now seen corresponding path program 1 times [2018-09-18 11:53:49,771 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:53:49,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:49,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:49,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:53:49,772 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:53:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 1686 proven. 355 refuted. 0 times theorem prover too weak. 1963 trivial. 0 not checked. [2018-09-18 11:53:51,339 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:51,339 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:53:51,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:51,347 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:51,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 2471 proven. 6 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2018-09-18 11:53:52,223 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:53,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 1686 proven. 359 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2018-09-18 11:53:53,433 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:53:53,434 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 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:53:53,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:53:53,452 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:53:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:53:54,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:53:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 2471 proven. 6 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2018-09-18 11:53:54,755 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:53:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 1686 proven. 359 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2018-09-18 11:53:55,718 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:53:55,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 14 [2018-09-18 11:53:55,719 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:53:55,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:53:55,721 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:53:55,721 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:53:55,721 INFO L87 Difference]: Start difference. First operand 17721 states and 20350 transitions. Second operand 9 states. [2018-09-18 11:54:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:54:00,415 INFO L93 Difference]: Finished difference Result 39998 states and 46409 transitions. [2018-09-18 11:54:00,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-18 11:54:00,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1148 [2018-09-18 11:54:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:54:00,508 INFO L225 Difference]: With dead ends: 39998 [2018-09-18 11:54:00,509 INFO L226 Difference]: Without dead ends: 22468 [2018-09-18 11:54:00,596 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4621 GetRequests, 4594 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2018-09-18 11:54:00,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22468 states. [2018-09-18 11:54:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22468 to 21881. [2018-09-18 11:54:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21881 states. [2018-09-18 11:54:01,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21881 states to 21881 states and 24742 transitions. [2018-09-18 11:54:01,101 INFO L78 Accepts]: Start accepts. Automaton has 21881 states and 24742 transitions. Word has length 1148 [2018-09-18 11:54:01,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:54:01,102 INFO L480 AbstractCegarLoop]: Abstraction has 21881 states and 24742 transitions. [2018-09-18 11:54:01,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:54:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 21881 states and 24742 transitions. [2018-09-18 11:54:01,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2018-09-18 11:54:01,144 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:54:01,145 INFO L376 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-18 11:54:01,145 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:54:01,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1662833811, now seen corresponding path program 1 times [2018-09-18 11:54:01,146 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:54:01,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:01,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:01,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:54:01,147 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:54:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:02,807 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-09-18 11:54:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 1944 proven. 5334 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2018-09-18 11:54:07,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:54:07,930 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:54:07,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:07,938 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:54:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:08,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:54:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 2885 proven. 87 refuted. 0 times theorem prover too weak. 5957 trivial. 0 not checked. [2018-09-18 11:54:09,694 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:54:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 2963 proven. 122 refuted. 0 times theorem prover too weak. 5844 trivial. 0 not checked. [2018-09-18 11:54:13,716 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:54:13,716 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 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:54:13,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:54:13,731 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:54:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:54:14,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:54:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 2885 proven. 87 refuted. 0 times theorem prover too weak. 5957 trivial. 0 not checked. [2018-09-18 11:54:15,764 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:54:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8929 backedges. 2963 proven. 122 refuted. 0 times theorem prover too weak. 5844 trivial. 0 not checked. [2018-09-18 11:54:18,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:54:18,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 8, 9, 8, 9] total 39 [2018-09-18 11:54:18,442 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:54:18,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-18 11:54:18,444 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-18 11:54:18,444 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1312, Unknown=0, NotChecked=0, Total=1482 [2018-09-18 11:54:18,445 INFO L87 Difference]: Start difference. First operand 21881 states and 24742 transitions. Second operand 33 states. [2018-09-18 11:54:22,066 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-09-18 11:54:24,157 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-09-18 11:54:25,656 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 32 [2018-09-18 11:54:37,714 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2018-09-18 11:54:44,876 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-09-18 11:54:47,584 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2018-09-18 11:54:49,831 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2018-09-18 11:54:52,706 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2018-09-18 11:54:54,018 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-09-18 11:54:54,459 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2018-09-18 11:54:55,648 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2018-09-18 11:54:56,285 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-09-18 11:54:56,731 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 Received shutdown request... [2018-09-18 11:54:58,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-09-18 11:54:58,245 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:54:58,254 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:54:58,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:54:58 BoogieIcfgContainer [2018-09-18 11:54:58,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:54:58,256 INFO L168 Benchmark]: Toolchain (without parser) took 233931.62 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -920.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-18 11:54:58,257 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-09-18 11:54:58,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 798.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:54:58,258 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:54:58,259 INFO L168 Benchmark]: Boogie Preprocessor took 274.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:54:58,264 INFO L168 Benchmark]: RCFGBuilder took 4087.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 123.2 MB). Peak memory consumption was 123.2 MB. Max. memory is 7.1 GB. [2018-09-18 11:54:58,265 INFO L168 Benchmark]: TraceAbstraction took 228653.94 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -245.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-09-18 11:54:58,276 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 798.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 110.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 274.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -861.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4087.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 123.2 MB). Peak memory consumption was 123.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228653.94 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -245.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 115). Cancelled while BasicCegarLoop was constructing difference of abstraction (21881states) and FLOYD_HOARE automaton (currently 134 states, 33 states before enhancement), while ReachableStatesComputation was computing reachable states (36430 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 228.5s OverallTime, 15 OverallIterations, 14 TraceHistogramMax, 145.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1882 SDtfs, 61859 SDslu, 6423 SDs, 0 SdLazy, 87566 SolverSat, 9994 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35526 GetRequests, 34701 SyntacticMatches, 90 SemanticMatches, 735 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27798 ImplicationChecksByTransitivity, 56.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21881occurred in iteration=14, 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: 3.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 6800 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 6.8s SatisfiabilityAnalysisTime, 56.2s InterpolantComputationTime, 26552 NumberOfCodeBlocks, 26552 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 43763 ConstructedInterpolants, 12 QuantifiedInterpolants, 174744091 SizeOfPredicates, 71 NumberOfNonLiveVariables, 24814 ConjunctsInSsa, 362 ConjunctsInUnsatCore, 59 InterpolantComputations, 5 PerfectInterpolantSequences, 114157/131487 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/Problem14_label50_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-54-58-302.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label50_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-54-58-302.csv Completed graceful shutdown