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_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:10:39,459 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:10:39,461 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:10:39,478 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:10:39,479 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:10:39,480 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:10:39,482 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:10:39,484 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:10:39,487 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:10:39,487 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:10:39,488 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:10:39,488 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:10:39,489 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:10:39,490 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:10:39,492 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:10:39,492 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:10:39,493 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:10:39,495 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:10:39,497 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:10:39,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:10:39,500 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:10:39,501 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:10:39,503 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:10:39,504 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:10:39,504 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:10:39,505 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:10:39,506 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:10:39,506 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:10:39,507 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:10:39,510 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:10:39,510 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:10:39,511 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:10:39,511 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:10:39,511 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:10:39,513 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:10:39,514 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:10:39,515 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 16:10:39,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:10:39,550 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:10:39,551 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:10:39,551 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:10:39,551 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:10:39,551 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:10:39,552 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:10:39,552 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:10:39,552 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:10:39,552 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:10:39,552 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:10:39,553 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:10:39,555 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:10:39,555 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:10:39,555 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:10:39,555 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:10:39,555 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:10:39,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:10:39,556 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:10:39,556 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:10:39,556 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:10:39,558 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:10:39,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:10:39,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:10:39,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:10:39,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:10:39,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:10:39,559 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:10:39,559 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:10:39,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:10:39,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:10:39,560 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:10:39,560 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:10:39,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:10:39,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:10:39,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:10:39,660 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:10:39,661 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:10:39,662 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label22_true-unreach-call.c [2018-09-14 16:10:40,044 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee74aaa2f/e5640e964ae543a08924ac90c3bc2f3b/FLAGfd0f279db [2018-09-14 16:10:40,529 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:10:40,530 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label22_true-unreach-call.c [2018-09-14 16:10:40,564 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee74aaa2f/e5640e964ae543a08924ac90c3bc2f3b/FLAGfd0f279db [2018-09-14 16:10:40,581 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee74aaa2f/e5640e964ae543a08924ac90c3bc2f3b [2018-09-14 16:10:40,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:10:40,598 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:10:40,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:10:40,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:10:40,607 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:10:40,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:10:40" (1/1) ... [2018-09-14 16:10:40,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c1f22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:40, skipping insertion in model container [2018-09-14 16:10:40,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:10:40" (1/1) ... [2018-09-14 16:10:40,625 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:10:42,047 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:10:42,065 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:10:42,744 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:10:42,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42 WrapperNode [2018-09-14 16:10:42,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:10:42,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:10:42,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:10:42,897 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:10:42,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... [2018-09-14 16:10:42,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... [2018-09-14 16:10:43,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:10:43,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:10:43,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:10:43,061 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:10:43,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... [2018-09-14 16:10:43,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... [2018-09-14 16:10:43,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... [2018-09-14 16:10:43,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... [2018-09-14 16:10:43,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... [2018-09-14 16:10:43,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... [2018-09-14 16:10:43,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... [2018-09-14 16:10:43,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:10:43,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:10:43,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:10:43,691 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:10:43,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:10:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:10:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:10:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 16:10:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 16:10:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 16:10:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 16:10:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 16:10:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 16:10:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:10:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:10:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:10:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:10:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:10:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:10:54,407 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:10:54,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:10:54 BoogieIcfgContainer [2018-09-14 16:10:54,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:10:54,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:10:54,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:10:54,412 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:10:54,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:10:40" (1/3) ... [2018-09-14 16:10:54,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ca05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:10:54, skipping insertion in model container [2018-09-14 16:10:54,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:10:42" (2/3) ... [2018-09-14 16:10:54,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ca05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:10:54, skipping insertion in model container [2018-09-14 16:10:54,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:10:54" (3/3) ... [2018-09-14 16:10:54,416 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label22_true-unreach-call.c [2018-09-14 16:10:54,426 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:10:54,435 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:10:54,507 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:10:54,507 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:10:54,508 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:10:54,508 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:10:54,508 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:10:54,508 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:10:54,508 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:10:54,508 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:10:54,508 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:10:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-14 16:10:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-09-14 16:10:54,612 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:10:54,615 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:10:54,616 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:10:54,622 INFO L82 PathProgramCache]: Analyzing trace with hash -351140554, now seen corresponding path program 1 times [2018-09-14 16:10:54,625 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:10:54,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:54,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:10:54,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:10:54,682 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:10:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:10:56,445 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:10:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:10:57,623 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:10:57,623 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:10:57,623 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:10:57,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:10:57,644 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:10:57,644 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:10:57,646 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-14 16:11:03,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:11:03,953 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-14 16:11:03,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:11:03,955 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 826 [2018-09-14 16:11:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:11:03,996 INFO L225 Difference]: With dead ends: 2647 [2018-09-14 16:11:03,997 INFO L226 Difference]: Without dead ends: 1738 [2018-09-14 16:11:04,007 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:11:04,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-14 16:11:04,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-14 16:11:04,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-14 16:11:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3145 transitions. [2018-09-14 16:11:04,182 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3145 transitions. Word has length 826 [2018-09-14 16:11:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:11:04,189 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3145 transitions. [2018-09-14 16:11:04,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:11:04,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3145 transitions. [2018-09-14 16:11:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2018-09-14 16:11:04,330 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:11:04,330 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:11:04,331 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:11:04,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1094153941, now seen corresponding path program 1 times [2018-09-14 16:11:04,333 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:11:04,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:04,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:04,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:04,335 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:11:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:05,468 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-09-14 16:11:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:11:06,207 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:11:06,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 16:11:06,207 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:11:06,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:11:06,210 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:11:06,211 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-14 16:11:06,211 INFO L87 Difference]: Start difference. First operand 1738 states and 3145 transitions. Second operand 5 states. [2018-09-14 16:11:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:11:18,441 INFO L93 Difference]: Finished difference Result 6810 states and 12570 transitions. [2018-09-14 16:11:18,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 16:11:18,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 835 [2018-09-14 16:11:18,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:11:18,491 INFO L225 Difference]: With dead ends: 6810 [2018-09-14 16:11:18,492 INFO L226 Difference]: Without dead ends: 5078 [2018-09-14 16:11:18,499 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-14 16:11:18,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5078 states. [2018-09-14 16:11:18,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 5078. [2018-09-14 16:11:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5078 states. [2018-09-14 16:11:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 8311 transitions. [2018-09-14 16:11:18,647 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 8311 transitions. Word has length 835 [2018-09-14 16:11:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:11:18,649 INFO L480 AbstractCegarLoop]: Abstraction has 5078 states and 8311 transitions. [2018-09-14 16:11:18,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:11:18,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 8311 transitions. [2018-09-14 16:11:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-09-14 16:11:18,674 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:11:18,675 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:11:18,675 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:11:18,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1220987150, now seen corresponding path program 1 times [2018-09-14 16:11:18,676 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:11:18,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:18,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:18,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:18,677 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:11:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:19,010 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:11:19,362 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 16:11:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:11:20,068 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:11:20,068 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:11:20,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:20,087 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:11:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:20,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:11:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:11:21,141 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:11:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:11:22,428 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:11:22,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:11:22,429 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:11:22,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:11:22,432 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:11:22,432 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:11:22,433 INFO L87 Difference]: Start difference. First operand 5078 states and 8311 transitions. Second operand 5 states. [2018-09-14 16:11:31,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:11:31,522 INFO L93 Difference]: Finished difference Result 15818 states and 26563 transitions. [2018-09-14 16:11:31,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:11:31,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 863 [2018-09-14 16:11:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:11:31,587 INFO L225 Difference]: With dead ends: 15818 [2018-09-14 16:11:31,587 INFO L226 Difference]: Without dead ends: 10746 [2018-09-14 16:11:31,608 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1735 GetRequests, 1720 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:11:31,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10746 states. [2018-09-14 16:11:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10746 to 10662. [2018-09-14 16:11:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10662 states. [2018-09-14 16:11:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10662 states to 10662 states and 17367 transitions. [2018-09-14 16:11:31,930 INFO L78 Accepts]: Start accepts. Automaton has 10662 states and 17367 transitions. Word has length 863 [2018-09-14 16:11:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:11:31,931 INFO L480 AbstractCegarLoop]: Abstraction has 10662 states and 17367 transitions. [2018-09-14 16:11:31,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:11:31,931 INFO L276 IsEmpty]: Start isEmpty. Operand 10662 states and 17367 transitions. [2018-09-14 16:11:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2018-09-14 16:11:31,978 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:11:31,979 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:11:31,980 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:11:31,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1381651277, now seen corresponding path program 1 times [2018-09-14 16:11:31,980 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:11:31,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:31,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:31,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:31,983 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:11:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:33,120 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 49 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 16:11:33,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:11:33,120 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:11:33,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:33,136 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:11:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:33,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:11:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:11:34,287 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:11:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 49 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 16:11:35,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:11:35,218 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:11:35,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:35,235 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:11:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:35,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:11:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:11:36,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:11:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 49 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 16:11:37,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:11:37,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 16:11:37,316 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:11:37,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:11:37,318 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:11:37,318 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:11:37,319 INFO L87 Difference]: Start difference. First operand 10662 states and 17367 transitions. Second operand 9 states. [2018-09-14 16:11:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:11:56,662 INFO L93 Difference]: Finished difference Result 54343 states and 106495 transitions. [2018-09-14 16:11:56,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-14 16:11:56,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 872 [2018-09-14 16:11:56,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:11:56,976 INFO L225 Difference]: With dead ends: 54343 [2018-09-14 16:11:56,977 INFO L226 Difference]: Without dead ends: 43687 [2018-09-14 16:11:57,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3550 GetRequests, 3506 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=405, Invalid=1575, Unknown=0, NotChecked=0, Total=1980 [2018-09-14 16:11:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43687 states. [2018-09-14 16:11:58,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43687 to 42336. [2018-09-14 16:11:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42336 states. [2018-09-14 16:11:58,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42336 states to 42336 states and 63393 transitions. [2018-09-14 16:11:58,699 INFO L78 Accepts]: Start accepts. Automaton has 42336 states and 63393 transitions. Word has length 872 [2018-09-14 16:11:58,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:11:58,700 INFO L480 AbstractCegarLoop]: Abstraction has 42336 states and 63393 transitions. [2018-09-14 16:11:58,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:11:58,700 INFO L276 IsEmpty]: Start isEmpty. Operand 42336 states and 63393 transitions. [2018-09-14 16:11:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2018-09-14 16:11:58,830 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:11:58,831 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 16:11:58,832 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:11:58,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1745646551, now seen corresponding path program 1 times [2018-09-14 16:11:58,832 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:11:58,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:58,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:58,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:11:58,834 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:11:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 74 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:11:59,677 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:11:59,677 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:11:59,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:11:59,694 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:11:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:11:59,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:12:00,695 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:12:00,696 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:12:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 74 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-14 16:12:01,066 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:12:01,066 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:12:01,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:01,087 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:12:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:01,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:12:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 16:12:02,364 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:12:03,133 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-14 16:12:03,135 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:12:03,136 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:12:03,137 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:12:03,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:12:03,139 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:12:03,139 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:12:03,140 INFO L87 Difference]: Start difference. First operand 42336 states and 63393 transitions. Second operand 9 states. [2018-09-14 16:12:18,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:12:18,450 INFO L93 Difference]: Finished difference Result 145924 states and 237689 transitions. [2018-09-14 16:12:18,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-14 16:12:18,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 890 [2018-09-14 16:12:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:12:19,013 INFO L225 Difference]: With dead ends: 145924 [2018-09-14 16:12:19,013 INFO L226 Difference]: Without dead ends: 103594 [2018-09-14 16:12:19,149 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3612 GetRequests, 3573 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2018-09-14 16:12:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103594 states. [2018-09-14 16:12:21,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103594 to 103219. [2018-09-14 16:12:21,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103219 states. [2018-09-14 16:12:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103219 states to 103219 states and 144923 transitions. [2018-09-14 16:12:21,552 INFO L78 Accepts]: Start accepts. Automaton has 103219 states and 144923 transitions. Word has length 890 [2018-09-14 16:12:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:12:21,553 INFO L480 AbstractCegarLoop]: Abstraction has 103219 states and 144923 transitions. [2018-09-14 16:12:21,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:12:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 103219 states and 144923 transitions. [2018-09-14 16:12:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2018-09-14 16:12:21,735 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:12:21,737 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:12:21,737 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:12:21,737 INFO L82 PathProgramCache]: Analyzing trace with hash -512026116, now seen corresponding path program 1 times [2018-09-14 16:12:21,737 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:12:21,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:21,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:21,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:21,747 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:12:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:22,089 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:12:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 188 proven. 73 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-14 16:12:23,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:12:23,791 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:12:23,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:23,809 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:12:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:24,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:12:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-09-14 16:12:24,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:12:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 188 proven. 73 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-14 16:12:25,330 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:12:25,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:12:25,331 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:12:25,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:12:25,332 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:12:25,332 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:12:25,332 INFO L87 Difference]: Start difference. First operand 103219 states and 144923 transitions. Second operand 5 states. [2018-09-14 16:12:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:12:32,279 INFO L93 Difference]: Finished difference Result 233926 states and 335289 transitions. [2018-09-14 16:12:32,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:12:32,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1026 [2018-09-14 16:12:32,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:12:32,790 INFO L225 Difference]: With dead ends: 233926 [2018-09-14 16:12:32,791 INFO L226 Difference]: Without dead ends: 130713 [2018-09-14 16:12:33,034 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2061 GetRequests, 2046 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:12:33,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130713 states. [2018-09-14 16:12:35,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130713 to 130254. [2018-09-14 16:12:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130254 states. [2018-09-14 16:12:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130254 states to 130254 states and 165289 transitions. [2018-09-14 16:12:36,054 INFO L78 Accepts]: Start accepts. Automaton has 130254 states and 165289 transitions. Word has length 1026 [2018-09-14 16:12:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:12:36,055 INFO L480 AbstractCegarLoop]: Abstraction has 130254 states and 165289 transitions. [2018-09-14 16:12:36,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:12:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 130254 states and 165289 transitions. [2018-09-14 16:12:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1579 [2018-09-14 16:12:36,264 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:12:36,265 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:12:36,266 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:12:36,266 INFO L82 PathProgramCache]: Analyzing trace with hash 873641299, now seen corresponding path program 1 times [2018-09-14 16:12:36,267 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:12:36,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:36,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:36,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:36,268 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:12:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:36,877 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:12:37,212 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 16:12:37,458 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-14 16:12:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 747 proven. 271 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2018-09-14 16:12:40,054 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:12:40,054 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:12:40,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:40,062 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:12:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:40,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:12:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2018-09-14 16:12:42,643 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:12:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 764 proven. 215 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-09-14 16:12:44,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:12:44,281 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 [2018-09-14 16:12:44,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:44,297 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:12:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:45,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:12:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2018-09-14 16:12:47,015 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:12:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 764 proven. 215 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-09-14 16:12:48,224 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:12:48,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-09-14 16:12:48,227 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:12:48,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 16:12:48,228 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 16:12:48,229 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-14 16:12:48,229 INFO L87 Difference]: Start difference. First operand 130254 states and 165289 transitions. Second operand 14 states. [2018-09-14 16:13:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:13:34,891 INFO L93 Difference]: Finished difference Result 432627 states and 595118 transitions. [2018-09-14 16:13:34,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-14 16:13:34,891 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1578 [2018-09-14 16:13:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:13:36,313 INFO L225 Difference]: With dead ends: 432627 [2018-09-14 16:13:36,314 INFO L226 Difference]: Without dead ends: 303214 [2018-09-14 16:13:36,579 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6420 GetRequests, 6348 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=843, Invalid=3447, Unknown=0, NotChecked=0, Total=4290 [2018-09-14 16:13:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303214 states. [2018-09-14 16:13:42,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303214 to 299640. [2018-09-14 16:13:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299640 states. [2018-09-14 16:13:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299640 states to 299640 states and 366418 transitions. [2018-09-14 16:13:43,704 INFO L78 Accepts]: Start accepts. Automaton has 299640 states and 366418 transitions. Word has length 1578 [2018-09-14 16:13:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:13:43,704 INFO L480 AbstractCegarLoop]: Abstraction has 299640 states and 366418 transitions. [2018-09-14 16:13:43,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-14 16:13:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 299640 states and 366418 transitions. [2018-09-14 16:13:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1699 [2018-09-14 16:13:44,207 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:13:44,208 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:13:44,209 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:13:44,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1610198296, now seen corresponding path program 1 times [2018-09-14 16:13:44,210 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:13:44,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:44,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:44,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:44,211 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:13:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1735 backedges. 1212 proven. 399 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-09-14 16:13:57,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:13:57,605 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 [2018-09-14 16:13:57,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:57,614 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:13:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:58,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:13:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1735 backedges. 866 proven. 0 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2018-09-14 16:13:59,708 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:14:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1735 backedges. 866 proven. 0 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2018-09-14 16:14:01,132 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:14:01,133 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [15] total 16 [2018-09-14 16:14:01,133 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:14:01,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:14:01,135 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:14:01,136 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:14:01,136 INFO L87 Difference]: Start difference. First operand 299640 states and 366418 transitions. Second operand 3 states. [2018-09-14 16:14:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:14:08,459 INFO L93 Difference]: Finished difference Result 593406 states and 726243 transitions. [2018-09-14 16:14:08,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:14:08,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1698 [2018-09-14 16:14:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:14:08,462 INFO L225 Difference]: With dead ends: 593406 [2018-09-14 16:14:08,462 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 16:14:08,994 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3412 GetRequests, 3392 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:14:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 16:14:08,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 16:14:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 16:14:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 16:14:08,997 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1698 [2018-09-14 16:14:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:14:08,998 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 16:14:08,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:14:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 16:14:08,998 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 16:14:09,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2018-09-14 16:14:11,153 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-14 16:14:11,155 INFO L168 Benchmark]: Toolchain (without parser) took 210559.76 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-09-14 16:14:11,156 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-14 16:14:11,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2297.05 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. [2018-09-14 16:14:11,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.86 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. [2018-09-14 16:14:11,160 INFO L168 Benchmark]: Boogie Preprocessor took 629.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 845.2 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. [2018-09-14 16:14:11,162 INFO L168 Benchmark]: RCFGBuilder took 10717.51 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 189.3 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -151.9 MB). Peak memory consumption was 712.7 MB. Max. memory is 7.1 GB. [2018-09-14 16:14:11,163 INFO L168 Benchmark]: TraceAbstraction took 196744.94 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.6 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-09-14 16:14:11,175 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2297.05 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 163.86 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 629.35 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 845.2 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 10717.51 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 189.3 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -151.9 MB). Peak memory consumption was 712.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 196744.94 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.6 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4796]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 1. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-14-11-201.csv Completed graceful shutdown