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/Problem04_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:19:05,471 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:19:05,472 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:19:05,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:19:05,485 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:19:05,486 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:19:05,487 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:19:05,489 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:19:05,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:19:05,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:19:05,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:19:05,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:19:05,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:19:05,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:19:05,495 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:19:05,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:19:05,497 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:19:05,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:19:05,501 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:19:05,502 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:19:05,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:19:05,505 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:19:05,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:19:05,507 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:19:05,508 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:19:05,509 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:19:05,510 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:19:05,511 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:19:05,511 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:19:05,513 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:19:05,513 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:19:05,514 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:19:05,514 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:19:05,514 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:19:05,515 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:19:05,516 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:19:05,516 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 10:19:05,537 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:19:05,537 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:19:05,538 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:19:05,538 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:19:05,539 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:19:05,539 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:19:05,539 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:19:05,539 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:19:05,539 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:19:05,540 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:19:05,540 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:19:05,540 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:19:05,544 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:19:05,544 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:19:05,544 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:19:05,544 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:19:05,544 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:19:05,545 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:19:05,545 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:19:05,545 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:19:05,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:19:05,546 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:19:05,546 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:19:05,546 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:19:05,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:19:05,547 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:19:05,547 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:19:05,547 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:19:05,548 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:19:05,549 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:19:05,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:19:05,549 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:19:05,549 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:19:05,549 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:19:05,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:19:05,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:19:05,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:19:05,640 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:19:05,640 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:19:05,641 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label01_true-unreach-call.c [2018-09-18 10:19:05,999 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169a69da7/25bc9b3cf16e48e991f559012252eecf/FLAGcbb47060a [2018-09-18 10:19:06,497 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:19:06,498 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label01_true-unreach-call.c [2018-09-18 10:19:06,530 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169a69da7/25bc9b3cf16e48e991f559012252eecf/FLAGcbb47060a [2018-09-18 10:19:06,546 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/169a69da7/25bc9b3cf16e48e991f559012252eecf [2018-09-18 10:19:06,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:19:06,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:19:06,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:19:06,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:19:06,571 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:19:06,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:19:06" (1/1) ... [2018-09-18 10:19:06,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9d7210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:06, skipping insertion in model container [2018-09-18 10:19:06,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:19:06" (1/1) ... [2018-09-18 10:19:06,588 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:19:07,871 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:19:07,891 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:19:08,579 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:19:08,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08 WrapperNode [2018-09-18 10:19:08,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:19:08,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:19:08,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:19:08,720 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:19:08,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (1/1) ... [2018-09-18 10:19:08,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (1/1) ... [2018-09-18 10:19:08,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:19:08,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:19:08,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:19:08,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:19:09,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (1/1) ... [2018-09-18 10:19:09,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (1/1) ... [2018-09-18 10:19:09,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (1/1) ... [2018-09-18 10:19:09,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (1/1) ... [2018-09-18 10:19:09,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (1/1) ... [2018-09-18 10:19:09,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (1/1) ... [2018-09-18 10:19:09,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (1/1) ... [2018-09-18 10:19:09,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:19:09,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:19:09,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:19:09,522 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:19:09,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (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 10:19:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:19:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:19:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 10:19:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 10:19:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 10:19:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 10:19:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 10:19:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 10:19:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:19:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:19:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:19:09,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:19:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:19:09,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:19:21,081 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:19:21,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:19:21 BoogieIcfgContainer [2018-09-18 10:19:21,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:19:21,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:19:21,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:19:21,086 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:19:21,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:19:06" (1/3) ... [2018-09-18 10:19:21,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397366e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:19:21, skipping insertion in model container [2018-09-18 10:19:21,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:19:08" (2/3) ... [2018-09-18 10:19:21,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@397366e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:19:21, skipping insertion in model container [2018-09-18 10:19:21,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:19:21" (3/3) ... [2018-09-18 10:19:21,089 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label01_true-unreach-call.c [2018-09-18 10:19:21,099 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:19:21,110 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:19:21,175 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:19:21,176 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:19:21,176 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:19:21,176 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:19:21,176 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:19:21,176 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:19:21,176 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:19:21,177 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:19:21,177 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:19:21,226 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-18 10:19:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2018-09-18 10:19:21,284 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:19:21,286 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] [2018-09-18 10:19:21,287 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:19:21,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1098352410, now seen corresponding path program 1 times [2018-09-18 10:19:21,296 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:19:21,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:19:21,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:19:21,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:19:21,353 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:19:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:19:22,942 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:19:23,881 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 10:19:23,884 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:19:23,884 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:19:23,884 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:19:23,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:19:23,915 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:19:23,915 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:19:23,918 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-18 10:19:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:19:31,237 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-18 10:19:31,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:19:31,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 822 [2018-09-18 10:19:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:19:31,285 INFO L225 Difference]: With dead ends: 2647 [2018-09-18 10:19:31,286 INFO L226 Difference]: Without dead ends: 1738 [2018-09-18 10:19:31,298 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:19:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-18 10:19:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-18 10:19:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-18 10:19:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3275 transitions. [2018-09-18 10:19:31,477 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3275 transitions. Word has length 822 [2018-09-18 10:19:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:19:31,482 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3275 transitions. [2018-09-18 10:19:31,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:19:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3275 transitions. [2018-09-18 10:19:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2018-09-18 10:19:31,515 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:19:31,516 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 10:19:31,517 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:19:31,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1738368029, now seen corresponding path program 1 times [2018-09-18 10:19:31,517 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:19:31,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:19:31,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:19:31,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:19:31,521 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:19:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:19:31,874 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:19:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:19:32,488 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:19:32,488 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:19:32,488 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:19:32,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:19:32,492 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:19:32,492 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:19:32,492 INFO L87 Difference]: Start difference. First operand 1738 states and 3275 transitions. Second operand 6 states. [2018-09-18 10:19:41,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:19:41,748 INFO L93 Difference]: Finished difference Result 5355 states and 10177 transitions. [2018-09-18 10:19:41,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:19:41,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 832 [2018-09-18 10:19:41,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:19:41,774 INFO L225 Difference]: With dead ends: 5355 [2018-09-18 10:19:41,775 INFO L226 Difference]: Without dead ends: 3623 [2018-09-18 10:19:41,782 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 10:19:41,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2018-09-18 10:19:41,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3593. [2018-09-18 10:19:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3593 states. [2018-09-18 10:19:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 6371 transitions. [2018-09-18 10:19:41,887 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 6371 transitions. Word has length 832 [2018-09-18 10:19:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:19:41,887 INFO L480 AbstractCegarLoop]: Abstraction has 3593 states and 6371 transitions. [2018-09-18 10:19:41,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:19:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 6371 transitions. [2018-09-18 10:19:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2018-09-18 10:19:41,910 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:19:41,911 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 10:19:41,911 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:19:41,912 INFO L82 PathProgramCache]: Analyzing trace with hash -664294016, now seen corresponding path program 1 times [2018-09-18 10:19:41,912 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:19:41,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:19:41,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:19:41,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:19:41,914 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:19:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:19:42,261 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:19:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 10:19:43,188 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:19:43,188 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 10:19:43,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:19:43,206 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:19:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:19:43,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:19:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:19:44,559 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:19:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:19:45,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:19:45,873 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:19:45,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:19:45,905 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:19:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:19:46,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:19:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 10:19:47,387 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:19:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-18 10:19:47,866 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 10:19:47,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5, 5] total 11 [2018-09-18 10:19:47,866 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:19:47,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:19:47,868 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:19:47,868 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:19:47,868 INFO L87 Difference]: Start difference. First operand 3593 states and 6371 transitions. Second operand 5 states. [2018-09-18 10:19:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:19:55,692 INFO L93 Difference]: Finished difference Result 11221 states and 20109 transitions. [2018-09-18 10:19:55,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:19:55,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 852 [2018-09-18 10:19:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:19:55,740 INFO L225 Difference]: With dead ends: 11221 [2018-09-18 10:19:55,741 INFO L226 Difference]: Without dead ends: 7634 [2018-09-18 10:19:55,753 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3415 GetRequests, 3399 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:19:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7634 states. [2018-09-18 10:19:55,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7634 to 7632. [2018-09-18 10:19:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7632 states. [2018-09-18 10:19:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7632 states to 7632 states and 12761 transitions. [2018-09-18 10:19:55,965 INFO L78 Accepts]: Start accepts. Automaton has 7632 states and 12761 transitions. Word has length 852 [2018-09-18 10:19:55,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:19:55,966 INFO L480 AbstractCegarLoop]: Abstraction has 7632 states and 12761 transitions. [2018-09-18 10:19:55,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:19:55,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7632 states and 12761 transitions. [2018-09-18 10:19:56,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2018-09-18 10:19:56,003 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:19:56,007 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:19:56,007 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:19:56,008 INFO L82 PathProgramCache]: Analyzing trace with hash 549202465, now seen corresponding path program 1 times [2018-09-18 10:19:56,008 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:19:56,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:19:56,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:19:56,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:19:56,009 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:19:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:19:56,407 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:19:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:19:57,190 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:19:57,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:19:57,190 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:19:57,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:19:57,192 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:19:57,192 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:19:57,192 INFO L87 Difference]: Start difference. First operand 7632 states and 12761 transitions. Second operand 6 states. [2018-09-18 10:20:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:20:03,876 INFO L93 Difference]: Finished difference Result 19209 states and 32798 transitions. [2018-09-18 10:20:03,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:20:03,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 881 [2018-09-18 10:20:03,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:20:03,946 INFO L225 Difference]: With dead ends: 19209 [2018-09-18 10:20:03,946 INFO L226 Difference]: Without dead ends: 11583 [2018-09-18 10:20:03,974 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 10:20:03,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11583 states. [2018-09-18 10:20:04,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11583 to 11499. [2018-09-18 10:20:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11499 states. [2018-09-18 10:20:04,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11499 states to 11499 states and 17806 transitions. [2018-09-18 10:20:04,277 INFO L78 Accepts]: Start accepts. Automaton has 11499 states and 17806 transitions. Word has length 881 [2018-09-18 10:20:04,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:20:04,278 INFO L480 AbstractCegarLoop]: Abstraction has 11499 states and 17806 transitions. [2018-09-18 10:20:04,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:20:04,278 INFO L276 IsEmpty]: Start isEmpty. Operand 11499 states and 17806 transitions. [2018-09-18 10:20:04,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2018-09-18 10:20:04,327 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:20:04,328 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:04,328 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:20:04,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1018893450, now seen corresponding path program 1 times [2018-09-18 10:20:04,329 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:20:04,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:20:04,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:20:04,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:20:04,330 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:20:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:20:05,482 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:20:05,482 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:20:05,483 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:20:05,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:20:05,502 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:20:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:20:05,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:20:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:20:06,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:20:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:20:07,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:20:07,703 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:20:07,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:20:07,719 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:20:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:20:08,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:20:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-09-18 10:20:09,713 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:20:10,749 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (5)] Exception during sending of exit command (exit): Broken pipe [2018-09-18 10:20:10,751 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 10:20:10,752 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 17 [2018-09-18 10:20:10,752 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:20:10,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:20:10,753 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:20:10,754 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:20:10,754 INFO L87 Difference]: Start difference. First operand 11499 states and 17806 transitions. Second operand 5 states. [2018-09-18 10:20:17,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:20:17,649 INFO L93 Difference]: Finished difference Result 32944 states and 53389 transitions. [2018-09-18 10:20:17,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:20:17,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 921 [2018-09-18 10:20:17,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:20:17,728 INFO L225 Difference]: With dead ends: 32944 [2018-09-18 10:20:17,728 INFO L226 Difference]: Without dead ends: 21451 [2018-09-18 10:20:17,762 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3689 GetRequests, 3672 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:20:17,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21451 states. [2018-09-18 10:20:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21451 to 21298. [2018-09-18 10:20:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21298 states. [2018-09-18 10:20:18,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21298 states to 21298 states and 30906 transitions. [2018-09-18 10:20:18,199 INFO L78 Accepts]: Start accepts. Automaton has 21298 states and 30906 transitions. Word has length 921 [2018-09-18 10:20:18,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:20:18,199 INFO L480 AbstractCegarLoop]: Abstraction has 21298 states and 30906 transitions. [2018-09-18 10:20:18,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:20:18,199 INFO L276 IsEmpty]: Start isEmpty. Operand 21298 states and 30906 transitions. [2018-09-18 10:20:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2018-09-18 10:20:18,274 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:20:18,275 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:20:18,275 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:20:18,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1344641614, now seen corresponding path program 1 times [2018-09-18 10:20:18,276 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:20:18,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:20:18,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:20:18,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:20:18,277 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:20:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:20:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:20:19,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:20:19,567 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:20:19,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:20:19,577 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:20:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:20:19,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:20:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:20:20,539 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:20:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:20:21,142 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:20:21,142 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:20:21,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:20:21,158 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:20:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:20:21,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:20:22,242 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:20:22,242 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:20:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:20:22,942 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:20:22,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 18 [2018-09-18 10:20:22,943 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:20:22,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:20:22,945 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:20:22,946 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:20:22,946 INFO L87 Difference]: Start difference. First operand 21298 states and 30906 transitions. Second operand 9 states. [2018-09-18 10:20:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:20:37,606 INFO L93 Difference]: Finished difference Result 68839 states and 107224 transitions. [2018-09-18 10:20:37,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-18 10:20:37,606 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 964 [2018-09-18 10:20:37,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:20:37,802 INFO L225 Difference]: With dead ends: 68839 [2018-09-18 10:20:37,802 INFO L226 Difference]: Without dead ends: 47547 [2018-09-18 10:20:37,863 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3888 GetRequests, 3853 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2018-09-18 10:20:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47547 states. [2018-09-18 10:20:38,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47547 to 47365. [2018-09-18 10:20:38,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47365 states. [2018-09-18 10:20:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47365 states to 47365 states and 67299 transitions. [2018-09-18 10:20:38,905 INFO L78 Accepts]: Start accepts. Automaton has 47365 states and 67299 transitions. Word has length 964 [2018-09-18 10:20:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:20:38,906 INFO L480 AbstractCegarLoop]: Abstraction has 47365 states and 67299 transitions. [2018-09-18 10:20:38,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:20:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 47365 states and 67299 transitions. [2018-09-18 10:20:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1071 [2018-09-18 10:20:39,010 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:20:39,013 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-09-18 10:20:39,014 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:20:39,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1775023693, now seen corresponding path program 1 times [2018-09-18 10:20:39,015 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:20:39,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:20:39,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:20:39,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:20:39,016 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:20:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:20:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 262 proven. 41 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-09-18 10:20:40,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:20:40,125 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:20:40,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:20:40,134 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:20:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:20:40,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:20:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-09-18 10:20:41,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:20:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 290 proven. 99 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-18 10:20:41,937 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:20:41,938 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:20:41,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:20:41,954 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:20:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:20:42,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:20:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-09-18 10:20:43,237 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:20:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 290 proven. 99 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-09-18 10:20:44,077 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:20:44,078 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 10:20:44,078 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:20:44,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:20:44,081 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:20:44,081 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:20:44,081 INFO L87 Difference]: Start difference. First operand 47365 states and 67299 transitions. Second operand 9 states. [2018-09-18 10:21:01,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:21:01,060 INFO L93 Difference]: Finished difference Result 135890 states and 207587 transitions. [2018-09-18 10:21:01,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-18 10:21:01,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1070 [2018-09-18 10:21:01,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:21:01,437 INFO L225 Difference]: With dead ends: 135890 [2018-09-18 10:21:01,438 INFO L226 Difference]: Without dead ends: 88531 [2018-09-18 10:21:01,594 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4334 GetRequests, 4294 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=325, Invalid=1235, Unknown=0, NotChecked=0, Total=1560 [2018-09-18 10:21:01,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88531 states. [2018-09-18 10:21:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88531 to 87028. [2018-09-18 10:21:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87028 states. [2018-09-18 10:21:03,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87028 states to 87028 states and 116699 transitions. [2018-09-18 10:21:03,426 INFO L78 Accepts]: Start accepts. Automaton has 87028 states and 116699 transitions. Word has length 1070 [2018-09-18 10:21:03,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:21:03,427 INFO L480 AbstractCegarLoop]: Abstraction has 87028 states and 116699 transitions. [2018-09-18 10:21:03,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:21:03,427 INFO L276 IsEmpty]: Start isEmpty. Operand 87028 states and 116699 transitions. [2018-09-18 10:21:03,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2018-09-18 10:21:03,534 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:21:03,535 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:03,536 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:21:03,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1195556629, now seen corresponding path program 1 times [2018-09-18 10:21:03,536 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:21:03,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:03,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:03,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:03,537 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:21:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 299 proven. 48 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:04,648 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:21:04,648 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:21:04,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:04,656 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:21:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:04,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:21:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:05,428 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:21:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 299 proven. 48 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:06,212 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:21:06,212 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:21:06,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:06,231 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:21:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:06,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:21:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:07,781 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:21:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 299 proven. 48 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:08,277 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:21:08,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 10:21:08,278 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:21:08,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:21:08,280 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:21:08,280 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:21:08,280 INFO L87 Difference]: Start difference. First operand 87028 states and 116699 transitions. Second operand 9 states. [2018-09-18 10:21:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:21:19,428 INFO L93 Difference]: Finished difference Result 198797 states and 283763 transitions. [2018-09-18 10:21:19,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 10:21:19,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1078 [2018-09-18 10:21:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:21:19,874 INFO L225 Difference]: With dead ends: 198797 [2018-09-18 10:21:19,874 INFO L226 Difference]: Without dead ends: 111775 [2018-09-18 10:21:20,025 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4332 GetRequests, 4308 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2018-09-18 10:21:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111775 states. [2018-09-18 10:21:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111775 to 110825. [2018-09-18 10:21:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110825 states. [2018-09-18 10:21:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110825 states to 110825 states and 148295 transitions. [2018-09-18 10:21:23,268 INFO L78 Accepts]: Start accepts. Automaton has 110825 states and 148295 transitions. Word has length 1078 [2018-09-18 10:21:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:21:23,269 INFO L480 AbstractCegarLoop]: Abstraction has 110825 states and 148295 transitions. [2018-09-18 10:21:23,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:21:23,269 INFO L276 IsEmpty]: Start isEmpty. Operand 110825 states and 148295 transitions. [2018-09-18 10:21:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2018-09-18 10:21:23,523 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:21:23,524 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:23,524 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:21:23,525 INFO L82 PathProgramCache]: Analyzing trace with hash 544838893, now seen corresponding path program 1 times [2018-09-18 10:21:23,525 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:21:23,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:23,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:23,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:23,526 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:21:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 319 proven. 48 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:24,516 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:21:24,516 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:21:24,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:24,524 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:21:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:24,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:21:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:26,032 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:21:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 319 proven. 48 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:26,992 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:21:26,992 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:21:27,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:27,008 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:21:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:27,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:21:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:28,370 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:21:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 319 proven. 48 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-09-18 10:21:29,461 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:21:29,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 10:21:29,463 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:21:29,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:21:29,465 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:21:29,465 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:21:29,465 INFO L87 Difference]: Start difference. First operand 110825 states and 148295 transitions. Second operand 9 states. [2018-09-18 10:21:41,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:21:41,607 INFO L93 Difference]: Finished difference Result 223063 states and 310156 transitions. [2018-09-18 10:21:41,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 10:21:41,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1098 [2018-09-18 10:21:41,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:21:42,067 INFO L225 Difference]: With dead ends: 223063 [2018-09-18 10:21:42,067 INFO L226 Difference]: Without dead ends: 112249 [2018-09-18 10:21:42,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4412 GetRequests, 4388 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2018-09-18 10:21:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112249 states. [2018-09-18 10:21:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112249 to 110850. [2018-09-18 10:21:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110850 states. [2018-09-18 10:21:45,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110850 states to 110850 states and 140510 transitions. [2018-09-18 10:21:45,143 INFO L78 Accepts]: Start accepts. Automaton has 110850 states and 140510 transitions. Word has length 1098 [2018-09-18 10:21:45,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:21:45,144 INFO L480 AbstractCegarLoop]: Abstraction has 110850 states and 140510 transitions. [2018-09-18 10:21:45,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:21:45,144 INFO L276 IsEmpty]: Start isEmpty. Operand 110850 states and 140510 transitions. [2018-09-18 10:21:45,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2018-09-18 10:21:45,292 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:21:45,293 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:21:45,293 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:21:45,294 INFO L82 PathProgramCache]: Analyzing trace with hash -578468294, now seen corresponding path program 1 times [2018-09-18 10:21:45,294 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:21:45,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:45,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:45,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:45,295 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:21:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 323 proven. 126 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:21:49,245 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:21:49,245 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:21:49,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:49,500 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:21:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:49,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:21:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 449 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-18 10:21:50,434 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:21:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 449 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-18 10:21:51,432 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:21:51,432 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:21:51,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:51,455 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:21:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:52,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:21:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 449 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-18 10:21:52,683 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:21:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 449 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-09-18 10:21:53,286 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:21:53,287 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 22 [2018-09-18 10:21:53,287 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:21:53,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 10:21:53,289 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 10:21:53,290 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-09-18 10:21:53,290 INFO L87 Difference]: Start difference. First operand 110850 states and 140510 transitions. Second operand 13 states. [2018-09-18 10:21:53,715 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2018-09-18 10:21:54,077 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-09-18 10:21:54,258 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2018-09-18 10:21:54,640 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2018-09-18 10:21:55,654 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2018-09-18 10:21:55,948 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-09-18 10:21:56,450 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2018-09-18 10:21:57,009 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-09-18 10:21:57,297 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2018-09-18 10:21:58,189 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-09-18 10:21:59,490 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2018-09-18 10:21:59,673 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-09-18 10:22:00,496 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2018-09-18 10:22:00,886 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2018-09-18 10:22:02,087 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-09-18 10:22:04,238 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-09-18 10:22:10,551 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2018-09-18 10:22:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:22:20,059 INFO L93 Difference]: Finished difference Result 220246 states and 296464 transitions. [2018-09-18 10:22:20,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-18 10:22:20,060 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1129 [2018-09-18 10:22:20,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:22:20,364 INFO L225 Difference]: With dead ends: 220246 [2018-09-18 10:22:20,364 INFO L226 Difference]: Without dead ends: 109407 [2018-09-18 10:22:20,502 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4586 GetRequests, 4531 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=657, Invalid=2535, Unknown=0, NotChecked=0, Total=3192 [2018-09-18 10:22:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109407 states. [2018-09-18 10:22:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109407 to 104029. [2018-09-18 10:22:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104029 states. [2018-09-18 10:22:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104029 states to 104029 states and 120439 transitions. [2018-09-18 10:22:22,006 INFO L78 Accepts]: Start accepts. Automaton has 104029 states and 120439 transitions. Word has length 1129 [2018-09-18 10:22:22,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:22:22,006 INFO L480 AbstractCegarLoop]: Abstraction has 104029 states and 120439 transitions. [2018-09-18 10:22:22,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-18 10:22:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 104029 states and 120439 transitions. [2018-09-18 10:22:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2018-09-18 10:22:22,093 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:22:22,093 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:22:22,094 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:22:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash 305541068, now seen corresponding path program 1 times [2018-09-18 10:22:22,094 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:22:22,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:22,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:22,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:22,095 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:22:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 346 proven. 60 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-18 10:22:23,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:23,528 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:22:23,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:23,537 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:23,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 404 proven. 2 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-18 10:22:24,783 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 346 proven. 60 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-18 10:22:25,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:25,339 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:22:25,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:25,356 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:26,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 404 proven. 2 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-18 10:22:26,659 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 346 proven. 60 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-09-18 10:22:27,187 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:22:27,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-18 10:22:27,188 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:22:27,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:22:27,190 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:22:27,190 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:22:27,190 INFO L87 Difference]: Start difference. First operand 104029 states and 120439 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 10:22:46,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-18 10:22:46,731 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:22:46,736 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:22:46,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:22:46 BoogieIcfgContainer [2018-09-18 10:22:46,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:22:46,738 INFO L168 Benchmark]: Toolchain (without parser) took 220178.84 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -57.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 10:22:46,739 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 10:22:46,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2155.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:22:46,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 160.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:22:46,740 INFO L168 Benchmark]: Boogie Preprocessor took 640.75 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2018-09-18 10:22:46,741 INFO L168 Benchmark]: RCFGBuilder took 11559.95 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 171.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -135.2 MB). Peak memory consumption was 705.3 MB. Max. memory is 7.1 GB. [2018-09-18 10:22:46,742 INFO L168 Benchmark]: TraceAbstraction took 205654.46 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 960.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 10:22:46,747 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 2155.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 160.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 640.75 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11559.95 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 171.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -135.2 MB). Peak memory consumption was 705.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205654.46 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 960.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4784]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4784). Cancelled while BasicCegarLoop was constructing difference of abstraction (104029states) and FLOYD_HOARE automaton (currently 25 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (256948 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 205.5s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 142.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1744 SDtfs, 68906 SDslu, 3145 SDs, 0 SdLazy, 92477 SolverSat, 33633 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33286 GetRequests, 33018 SyntacticMatches, 31 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1998 ImplicationChecksByTransitivity, 13.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110850occurred in iteration=9, 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: 11.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 9681 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 7.9s SatisfiabilityAnalysisTime, 31.9s InterpolantComputationTime, 27291 NumberOfCodeBlocks, 27291 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 43752 ConstructedInterpolants, 0 QuantifiedInterpolants, 72836063 SizeOfPredicates, 10 NumberOfNonLiveVariables, 23632 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 43 InterpolantComputations, 6 PerfectInterpolantSequences, 13087/13968 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/Problem04_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-22-46-760.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-22-46-760.csv Completed graceful shutdown