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/Problem06_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:44:45,347 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:44:45,349 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:44:45,364 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:44:45,365 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:44:45,366 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:44:45,367 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:44:45,370 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:44:45,371 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:44:45,373 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:44:45,375 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:44:45,375 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:44:45,376 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:44:45,378 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:44:45,379 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:44:45,380 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:44:45,381 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:44:45,392 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:44:45,394 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:44:45,395 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:44:45,396 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:44:45,397 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:44:45,399 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:44:45,400 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:44:45,400 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:44:45,401 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:44:45,401 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:44:45,402 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:44:45,403 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:44:45,404 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:44:45,404 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:44:45,405 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:44:45,405 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:44:45,405 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:44:45,407 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:44:45,408 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:44:45,408 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 10:44:45,431 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:44:45,431 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:44:45,432 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:44:45,432 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:44:45,432 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:44:45,432 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:44:45,433 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:44:45,433 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:44:45,433 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:44:45,433 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:44:45,433 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:44:45,433 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:44:45,434 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:44:45,434 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:44:45,434 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:44:45,435 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:44:45,435 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:44:45,435 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:44:45,435 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:44:45,435 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:44:45,436 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:44:45,436 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:44:45,436 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:44:45,436 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:44:45,436 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:44:45,437 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:44:45,437 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:44:45,437 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:44:45,437 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:44:45,437 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:44:45,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:44:45,438 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:44:45,438 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:44:45,438 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:44:45,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:44:45,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:44:45,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:44:45,522 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:44:45,522 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:44:45,523 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label54_true-unreach-call.c [2018-09-18 10:44:45,882 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13ae6344/2c09dedd10344db7af1c0acb7fdd912f/FLAG2d039aad1 [2018-09-18 10:44:46,448 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:44:46,450 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label54_true-unreach-call.c [2018-09-18 10:44:46,498 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13ae6344/2c09dedd10344db7af1c0acb7fdd912f/FLAG2d039aad1 [2018-09-18 10:44:46,518 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c13ae6344/2c09dedd10344db7af1c0acb7fdd912f [2018-09-18 10:44:46,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:44:46,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:44:46,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:44:46,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:44:46,543 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:44:46,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:44:46" (1/1) ... [2018-09-18 10:44:46,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f57d78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:46, skipping insertion in model container [2018-09-18 10:44:46,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:44:46" (1/1) ... [2018-09-18 10:44:46,561 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:44:48,553 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:44:48,573 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:44:49,695 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:44:49,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49 WrapperNode [2018-09-18 10:44:49,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:44:49,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:44:49,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:44:49,976 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:44:49,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (1/1) ... [2018-09-18 10:44:50,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (1/1) ... [2018-09-18 10:44:50,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:44:50,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:44:50,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:44:50,423 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:44:51,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (1/1) ... [2018-09-18 10:44:51,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (1/1) ... [2018-09-18 10:44:51,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (1/1) ... [2018-09-18 10:44:51,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (1/1) ... [2018-09-18 10:44:51,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (1/1) ... [2018-09-18 10:44:51,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (1/1) ... [2018-09-18 10:44:51,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (1/1) ... [2018-09-18 10:44:51,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:44:51,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:44:51,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:44:51,426 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:44:51,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (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 10:44:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:44:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:44:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-18 10:44:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-18 10:44:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 10:44:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 10:44:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 10:44:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 10:44:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 10:44:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 10:44:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:44:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:44:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:44:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:44:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:44:51,511 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:45:03,665 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:45:03,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:45:03 BoogieIcfgContainer [2018-09-18 10:45:03,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:45:03,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:45:03,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:45:03,670 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:45:03,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:44:46" (1/3) ... [2018-09-18 10:45:03,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a89d3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:45:03, skipping insertion in model container [2018-09-18 10:45:03,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:44:49" (2/3) ... [2018-09-18 10:45:03,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a89d3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:45:03, skipping insertion in model container [2018-09-18 10:45:03,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:45:03" (3/3) ... [2018-09-18 10:45:03,674 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label54_true-unreach-call.c [2018-09-18 10:45:03,684 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:45:03,693 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:45:03,765 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:45:03,766 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:45:03,766 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:45:03,766 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:45:03,767 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:45:03,767 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:45:03,767 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:45:03,767 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:45:03,767 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:45:03,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states. [2018-09-18 10:45:03,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2018-09-18 10:45:03,892 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:45:03,895 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:03,896 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:45:03,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1873903688, now seen corresponding path program 1 times [2018-09-18 10:45:03,905 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:45:03,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:03,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:03,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:03,965 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:45:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:06,048 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:45:07,401 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 10:45:07,403 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:45:07,403 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:45:07,403 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:45:07,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:45:07,428 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:45:07,429 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:45:07,431 INFO L87 Difference]: Start difference. First operand 1316 states. Second operand 3 states. [2018-09-18 10:45:17,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:45:17,192 INFO L93 Difference]: Finished difference Result 3733 states and 6982 transitions. [2018-09-18 10:45:17,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:45:17,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 980 [2018-09-18 10:45:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:45:17,263 INFO L225 Difference]: With dead ends: 3733 [2018-09-18 10:45:17,264 INFO L226 Difference]: Without dead ends: 2415 [2018-09-18 10:45:17,282 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:45:17,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2018-09-18 10:45:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2393. [2018-09-18 10:45:17,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2018-09-18 10:45:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 4243 transitions. [2018-09-18 10:45:17,669 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 4243 transitions. Word has length 980 [2018-09-18 10:45:17,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:45:17,672 INFO L480 AbstractCegarLoop]: Abstraction has 2393 states and 4243 transitions. [2018-09-18 10:45:17,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:45:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 4243 transitions. [2018-09-18 10:45:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1010 [2018-09-18 10:45:17,740 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:45:17,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:17,741 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:45:17,743 INFO L82 PathProgramCache]: Analyzing trace with hash -453015495, now seen corresponding path program 1 times [2018-09-18 10:45:17,744 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:45:17,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:17,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:17,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:17,746 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:45:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:45:19,677 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:45:19,677 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:45:19,678 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:45:19,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:45:19,681 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:45:19,681 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:45:19,682 INFO L87 Difference]: Start difference. First operand 2393 states and 4243 transitions. Second operand 3 states. [2018-09-18 10:45:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:45:28,029 INFO L93 Difference]: Finished difference Result 6887 states and 12411 transitions. [2018-09-18 10:45:28,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:45:28,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1009 [2018-09-18 10:45:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:45:28,065 INFO L225 Difference]: With dead ends: 6887 [2018-09-18 10:45:28,065 INFO L226 Difference]: Without dead ends: 4500 [2018-09-18 10:45:28,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:45:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2018-09-18 10:45:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 4483. [2018-09-18 10:45:28,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4483 states. [2018-09-18 10:45:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 7466 transitions. [2018-09-18 10:45:28,184 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 7466 transitions. Word has length 1009 [2018-09-18 10:45:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:45:28,185 INFO L480 AbstractCegarLoop]: Abstraction has 4483 states and 7466 transitions. [2018-09-18 10:45:28,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:45:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 7466 transitions. [2018-09-18 10:45:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2018-09-18 10:45:28,213 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:45:28,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:28,214 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:45:28,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1525402901, now seen corresponding path program 1 times [2018-09-18 10:45:28,215 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:45:28,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:28,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:28,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:28,217 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:45:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:28,714 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:45:29,749 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 10:45:29,750 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:45:29,750 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:45:29,751 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:45:29,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:45:29,752 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:45:29,752 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:45:29,753 INFO L87 Difference]: Start difference. First operand 4483 states and 7466 transitions. Second operand 6 states. [2018-09-18 10:45:41,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:45:41,697 INFO L93 Difference]: Finished difference Result 11377 states and 19013 transitions. [2018-09-18 10:45:41,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:45:41,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1020 [2018-09-18 10:45:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:45:41,741 INFO L225 Difference]: With dead ends: 11377 [2018-09-18 10:45:41,741 INFO L226 Difference]: Without dead ends: 6900 [2018-09-18 10:45:41,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:45:41,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6900 states. [2018-09-18 10:45:41,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6900 to 6796. [2018-09-18 10:45:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6796 states. [2018-09-18 10:45:41,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6796 states to 6796 states and 10481 transitions. [2018-09-18 10:45:41,951 INFO L78 Accepts]: Start accepts. Automaton has 6796 states and 10481 transitions. Word has length 1020 [2018-09-18 10:45:41,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:45:41,953 INFO L480 AbstractCegarLoop]: Abstraction has 6796 states and 10481 transitions. [2018-09-18 10:45:41,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:45:41,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6796 states and 10481 transitions. [2018-09-18 10:45:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2018-09-18 10:45:41,993 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:45:41,994 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:41,994 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:45:41,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1698970358, now seen corresponding path program 1 times [2018-09-18 10:45:41,995 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:45:41,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:41,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:41,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:41,997 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:45:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:42,402 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:45:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 39 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:45:43,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:45:43,397 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 10:45:43,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:43,414 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:45:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:44,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:45:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-18 10:45:45,245 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:45:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 39 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:45:46,197 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:45:46,198 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 10:45:46,198 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:45:46,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:45:46,201 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:45:46,201 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:45:46,201 INFO L87 Difference]: Start difference. First operand 6796 states and 10481 transitions. Second operand 5 states. [2018-09-18 10:45:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:45:57,118 INFO L93 Difference]: Finished difference Result 20586 states and 33145 transitions. [2018-09-18 10:45:57,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:45:57,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1027 [2018-09-18 10:45:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:45:57,195 INFO L225 Difference]: With dead ends: 20586 [2018-09-18 10:45:57,195 INFO L226 Difference]: Without dead ends: 13796 [2018-09-18 10:45:57,223 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2061 GetRequests, 2048 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:45:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13796 states. [2018-09-18 10:45:57,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13796 to 13501. [2018-09-18 10:45:57,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13501 states. [2018-09-18 10:45:57,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13501 states to 13501 states and 20873 transitions. [2018-09-18 10:45:57,593 INFO L78 Accepts]: Start accepts. Automaton has 13501 states and 20873 transitions. Word has length 1027 [2018-09-18 10:45:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:45:57,593 INFO L480 AbstractCegarLoop]: Abstraction has 13501 states and 20873 transitions. [2018-09-18 10:45:57,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:45:57,593 INFO L276 IsEmpty]: Start isEmpty. Operand 13501 states and 20873 transitions. [2018-09-18 10:45:57,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1050 [2018-09-18 10:45:57,650 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:45:57,651 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:45:57,651 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:45:57,652 INFO L82 PathProgramCache]: Analyzing trace with hash 105703777, now seen corresponding path program 1 times [2018-09-18 10:45:57,652 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:45:57,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:57,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:57,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:45:57,655 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:45:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 96 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-18 10:45:58,940 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:45:58,940 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 10:45:58,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:45:58,959 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:45:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:45:59,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 64 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-18 10:46:00,702 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-18 10:46:02,701 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:02,702 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 10:46:02,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:02,719 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:03,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-18 10:46:04,769 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-09-18 10:46:06,095 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 10:46:06,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6, 4, 4] total 11 [2018-09-18 10:46:06,097 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:46:06,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:46:06,098 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:46:06,098 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:46:06,098 INFO L87 Difference]: Start difference. First operand 13501 states and 20873 transitions. Second operand 3 states. [2018-09-18 10:46:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:46:13,002 INFO L93 Difference]: Finished difference Result 39796 states and 64484 transitions. [2018-09-18 10:46:13,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:46:13,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1049 [2018-09-18 10:46:13,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:46:13,131 INFO L225 Difference]: With dead ends: 39796 [2018-09-18 10:46:13,131 INFO L226 Difference]: Without dead ends: 26301 [2018-09-18 10:46:13,192 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4200 GetRequests, 4184 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:46:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26301 states. [2018-09-18 10:46:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26301 to 26251. [2018-09-18 10:46:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26251 states. [2018-09-18 10:46:13,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26251 states to 26251 states and 38594 transitions. [2018-09-18 10:46:13,816 INFO L78 Accepts]: Start accepts. Automaton has 26251 states and 38594 transitions. Word has length 1049 [2018-09-18 10:46:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:46:13,817 INFO L480 AbstractCegarLoop]: Abstraction has 26251 states and 38594 transitions. [2018-09-18 10:46:13,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:46:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 26251 states and 38594 transitions. [2018-09-18 10:46:13,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2018-09-18 10:46:13,931 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:46:13,932 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:13,932 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:46:13,933 INFO L82 PathProgramCache]: Analyzing trace with hash -628476707, now seen corresponding path program 1 times [2018-09-18 10:46:13,933 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:46:13,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:13,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:13,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:13,938 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:46:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 90 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 10:46:15,333 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:15,333 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 10:46:15,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:15,346 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:15,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:16,683 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-18 10:46:16,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 90 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 10:46:17,585 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:17,585 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:46:17,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:17,601 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:18,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-18 10:46:19,368 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 90 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-18 10:46:20,138 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:46:20,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 10:46:20,139 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:46:20,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:46:20,141 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:46:20,141 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:46:20,142 INFO L87 Difference]: Start difference. First operand 26251 states and 38594 transitions. Second operand 9 states. [2018-09-18 10:46:34,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:46:34,995 INFO L93 Difference]: Finished difference Result 66423 states and 105032 transitions. [2018-09-18 10:46:34,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 10:46:34,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1062 [2018-09-18 10:46:34,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:46:35,182 INFO L225 Difference]: With dead ends: 66423 [2018-09-18 10:46:35,182 INFO L226 Difference]: Without dead ends: 40178 [2018-09-18 10:46:35,250 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4266 GetRequests, 4243 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:46:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40178 states. [2018-09-18 10:46:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40178 to 39931. [2018-09-18 10:46:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39931 states. [2018-09-18 10:46:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39931 states to 39931 states and 57880 transitions. [2018-09-18 10:46:36,121 INFO L78 Accepts]: Start accepts. Automaton has 39931 states and 57880 transitions. Word has length 1062 [2018-09-18 10:46:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:46:36,122 INFO L480 AbstractCegarLoop]: Abstraction has 39931 states and 57880 transitions. [2018-09-18 10:46:36,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:46:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 39931 states and 57880 transitions. [2018-09-18 10:46:36,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2018-09-18 10:46:36,221 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:46:36,222 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:46:36,223 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:46:36,223 INFO L82 PathProgramCache]: Analyzing trace with hash -917625757, now seen corresponding path program 1 times [2018-09-18 10:46:36,223 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:46:36,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:36,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:36,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:46:36,225 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:46:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 140 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:37,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:37,373 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:46:37,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:37,382 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:37,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:38,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 140 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:39,146 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:46:39,147 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:46:39,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:46:39,162 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:46:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:46:40,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:46:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:41,021 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:46:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 140 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:46:41,772 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:46:41,773 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 10:46:41,773 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:46:41,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:46:41,775 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:46:41,775 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:46:41,775 INFO L87 Difference]: Start difference. First operand 39931 states and 57880 transitions. Second operand 9 states. [2018-09-18 10:47:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:47:08,387 INFO L93 Difference]: Finished difference Result 145266 states and 300714 transitions. [2018-09-18 10:47:08,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 10:47:08,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1095 [2018-09-18 10:47:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:47:09,099 INFO L225 Difference]: With dead ends: 145266 [2018-09-18 10:47:09,099 INFO L226 Difference]: Without dead ends: 105341 [2018-09-18 10:47:09,215 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4406 GetRequests, 4379 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-18 10:47:09,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105341 states. [2018-09-18 10:47:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105341 to 103806. [2018-09-18 10:47:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103806 states. [2018-09-18 10:47:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103806 states to 103806 states and 178407 transitions. [2018-09-18 10:47:12,803 INFO L78 Accepts]: Start accepts. Automaton has 103806 states and 178407 transitions. Word has length 1095 [2018-09-18 10:47:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:47:12,804 INFO L480 AbstractCegarLoop]: Abstraction has 103806 states and 178407 transitions. [2018-09-18 10:47:12,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:47:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 103806 states and 178407 transitions. [2018-09-18 10:47:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2018-09-18 10:47:13,306 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:47:13,307 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:47:13,307 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:47:13,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1660951460, now seen corresponding path program 1 times [2018-09-18 10:47:13,308 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:47:13,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:47:13,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:13,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:47:13,310 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:47:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 118 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:47:14,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:47:14,812 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:47:14,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:14,820 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:47:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:15,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:47:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:47:16,604 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:47:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 118 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:47:17,116 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:47:17,117 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:47:17,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:17,134 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:47:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:18,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:47:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:47:19,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:47:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 118 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (10)] Forcibly destroying the process [2018-09-18 10:47:19,951 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:47:19,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-09-18 10:47:19,952 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:47:19,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-18 10:47:19,954 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-18 10:47:19,955 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:47:19,955 INFO L87 Difference]: Start difference. First operand 103806 states and 178407 transitions. Second operand 8 states. [2018-09-18 10:47:37,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:47:37,708 INFO L93 Difference]: Finished difference Result 211219 states and 393832 transitions. [2018-09-18 10:47:37,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-18 10:47:37,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1095 [2018-09-18 10:47:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:47:38,324 INFO L225 Difference]: With dead ends: 211219 [2018-09-18 10:47:38,324 INFO L226 Difference]: Without dead ends: 107479 [2018-09-18 10:47:38,527 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4405 GetRequests, 4379 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-09-18 10:47:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107479 states. [2018-09-18 10:47:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107479 to 106429. [2018-09-18 10:47:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106429 states. [2018-09-18 10:47:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106429 states to 106429 states and 181063 transitions. [2018-09-18 10:47:42,141 INFO L78 Accepts]: Start accepts. Automaton has 106429 states and 181063 transitions. Word has length 1095 [2018-09-18 10:47:42,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:47:42,141 INFO L480 AbstractCegarLoop]: Abstraction has 106429 states and 181063 transitions. [2018-09-18 10:47:42,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-18 10:47:42,141 INFO L276 IsEmpty]: Start isEmpty. Operand 106429 states and 181063 transitions. [2018-09-18 10:47:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2018-09-18 10:47:42,519 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:47:42,520 INFO L376 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:47:42,521 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:47:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1400738298, now seen corresponding path program 1 times [2018-09-18 10:47:42,521 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:47:42,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:47:42,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:42,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:47:42,523 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:47:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 156 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:47:43,415 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:47:43,415 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:47:44,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:44,069 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:47:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:44,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:47:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 10:47:45,045 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:47:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 10:47:49,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:47:49,930 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:47:49,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:47:49,946 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:47:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:47:51,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:47:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 10:47:51,665 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:47:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 10:47:52,177 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:47:52,178 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 10:47:52,178 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:47:52,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:47:52,180 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:47:52,180 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:47:52,181 INFO L87 Difference]: Start difference. First operand 106429 states and 181063 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 10:48:18,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-18 10:48:18,916 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:48:18,922 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:48:18,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:48:18 BoogieIcfgContainer [2018-09-18 10:48:18,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:48:18,923 INFO L168 Benchmark]: Toolchain (without parser) took 212390.51 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -569.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-09-18 10:48:18,924 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:48:18,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3438.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 995.2 MB in the end (delta: 402.3 MB). Peak memory consumption was 402.3 MB. Max. memory is 7.1 GB. [2018-09-18 10:48:18,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 447.29 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 249.6 MB). Free memory was 995.2 MB in the beginning and 1.7 GB in the end (delta: -659.9 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. [2018-09-18 10:48:18,927 INFO L168 Benchmark]: Boogie Preprocessor took 1002.32 ms. Allocated memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: 487.1 MB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -457.2 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. [2018-09-18 10:48:18,928 INFO L168 Benchmark]: RCFGBuilder took 12240.40 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 444.6 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -153.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-18 10:48:18,929 INFO L168 Benchmark]: TraceAbstraction took 195255.37 ms. Allocated memory was 2.7 GB in the beginning and 4.3 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 298.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-18 10:48:18,933 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3438.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 995.2 MB in the end (delta: 402.3 MB). Peak memory consumption was 402.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 447.29 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 249.6 MB). Free memory was 995.2 MB in the beginning and 1.7 GB in the end (delta: -659.9 MB). Peak memory consumption was 87.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1002.32 ms. Allocated memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: 487.1 MB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -457.2 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12240.40 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 444.6 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -153.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 195255.37 ms. Allocated memory was 2.7 GB in the beginning and 4.3 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 298.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9387]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9387). Cancelled while BasicCegarLoop was constructing difference of abstraction (106429states) and FLOYD_HOARE automaton (currently 40 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (309777 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1316 locations, 1 error locations. TIMEOUT Result, 195.1s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 136.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8087 SDtfs, 38232 SDslu, 9369 SDs, 0 SdLazy, 85302 SolverSat, 21525 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23841 GetRequests, 23673 SyntacticMatches, 37 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106429occurred in iteration=8, 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: 9.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 3320 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.9s SsaConstructionTime, 8.8s SatisfiabilityAnalysisTime, 29.1s InterpolantComputationTime, 21275 NumberOfCodeBlocks, 21275 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 33079 ConstructedInterpolants, 0 QuantifiedInterpolants, 52662245 SizeOfPredicates, 16 NumberOfNonLiveVariables, 28196 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 31 InterpolantComputations, 6 PerfectInterpolantSequences, 3720/3945 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/Problem06_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-48-18-947.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem06_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-48-18-947.csv Completed graceful shutdown