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_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:13:23,521 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:13:23,522 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:13:23,535 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:13:23,535 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:13:23,536 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:13:23,537 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:13:23,541 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:13:23,544 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:13:23,547 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:13:23,549 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:13:23,549 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:13:23,550 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:13:23,551 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:13:23,553 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:13:23,553 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:13:23,554 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:13:23,556 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:13:23,558 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:13:23,559 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:13:23,560 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:13:23,562 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:13:23,564 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:13:23,564 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:13:23,565 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:13:23,566 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:13:23,567 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:13:23,567 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:13:23,568 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:13:23,569 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:13:23,570 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:13:23,570 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:13:23,570 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:13:23,571 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:13:23,572 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:13:23,572 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:13:23,573 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 16:13:23,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:13:23,588 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:13:23,589 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:13:23,589 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:13:23,590 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:13:23,590 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:13:23,590 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:13:23,590 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:13:23,590 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:13:23,591 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:13:23,591 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:13:23,591 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:13:23,592 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:13:23,592 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:13:23,592 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:13:23,592 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:13:23,592 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:13:23,593 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:13:23,593 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:13:23,593 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:13:23,593 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:13:23,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:13:23,594 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:13:23,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:13:23,594 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:13:23,594 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:13:23,595 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:13:23,595 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:13:23,595 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:13:23,595 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:13:23,596 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:13:23,596 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:13:23,596 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:13:23,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:13:23,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:13:23,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:13:23,688 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:13:23,688 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:13:23,689 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label41_true-unreach-call.c [2018-09-14 16:13:24,032 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513d0cbc6/4ed1dfa3fadb4cabb55319ff790a9490/FLAG9dd5e7ee1 [2018-09-14 16:13:24,492 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:13:24,493 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label41_true-unreach-call.c [2018-09-14 16:13:24,532 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513d0cbc6/4ed1dfa3fadb4cabb55319ff790a9490/FLAG9dd5e7ee1 [2018-09-14 16:13:24,554 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/513d0cbc6/4ed1dfa3fadb4cabb55319ff790a9490 [2018-09-14 16:13:24,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:13:24,572 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:13:24,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:13:24,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:13:24,585 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:13:24,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:13:24" (1/1) ... [2018-09-14 16:13:24,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627e0d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:24, skipping insertion in model container [2018-09-14 16:13:24,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:13:24" (1/1) ... [2018-09-14 16:13:24,603 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:13:26,077 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:13:26,098 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:13:26,695 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:13:26,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26 WrapperNode [2018-09-14 16:13:26,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:13:26,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:13:26,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:13:26,837 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:13:26,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (1/1) ... [2018-09-14 16:13:26,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (1/1) ... [2018-09-14 16:13:26,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:13:26,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:13:26,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:13:26,995 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:13:27,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (1/1) ... [2018-09-14 16:13:27,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (1/1) ... [2018-09-14 16:13:27,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (1/1) ... [2018-09-14 16:13:27,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (1/1) ... [2018-09-14 16:13:27,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (1/1) ... [2018-09-14 16:13:27,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (1/1) ... [2018-09-14 16:13:27,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (1/1) ... [2018-09-14 16:13:27,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:13:27,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:13:27,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:13:27,639 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:13:27,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (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 16:13:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:13:27,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:13:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 16:13:27,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 16:13:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 16:13:27,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 16:13:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 16:13:27,719 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 16:13:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:13:27,719 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:13:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:13:27,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:13:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:13:27,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:13:39,792 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:13:39,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:13:39 BoogieIcfgContainer [2018-09-14 16:13:39,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:13:39,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:13:39,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:13:39,798 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:13:39,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:13:24" (1/3) ... [2018-09-14 16:13:39,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7360cd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:13:39, skipping insertion in model container [2018-09-14 16:13:39,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:13:26" (2/3) ... [2018-09-14 16:13:39,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7360cd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:13:39, skipping insertion in model container [2018-09-14 16:13:39,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:13:39" (3/3) ... [2018-09-14 16:13:39,803 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label41_true-unreach-call.c [2018-09-14 16:13:39,815 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:13:39,825 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:13:39,890 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:13:39,891 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:13:39,891 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:13:39,891 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:13:39,891 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:13:39,891 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:13:39,891 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:13:39,892 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:13:39,892 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:13:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-14 16:13:39,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2018-09-14 16:13:39,979 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:13:39,981 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] [2018-09-14 16:13:39,983 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:13:39,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1045443342, now seen corresponding path program 1 times [2018-09-14 16:13:39,992 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:13:40,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:40,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:40,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:40,050 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:13:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:41,537 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:13:42,393 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 16:13:42,395 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:13:42,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:13:42,396 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:13:42,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:13:42,418 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:13:42,419 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:13:42,421 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-14 16:13:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:13:49,124 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-14 16:13:49,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:13:49,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 824 [2018-09-14 16:13:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:13:49,188 INFO L225 Difference]: With dead ends: 2647 [2018-09-14 16:13:49,189 INFO L226 Difference]: Without dead ends: 1738 [2018-09-14 16:13:49,204 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:13:49,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-14 16:13:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-14 16:13:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-14 16:13:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3133 transitions. [2018-09-14 16:13:49,421 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3133 transitions. Word has length 824 [2018-09-14 16:13:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:13:49,427 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3133 transitions. [2018-09-14 16:13:49,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:13:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3133 transitions. [2018-09-14 16:13:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2018-09-14 16:13:49,462 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:13:49,463 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:13:49,464 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:13:49,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1700434297, now seen corresponding path program 1 times [2018-09-14 16:13:49,467 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:13:49,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:49,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:49,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:49,469 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:13:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:49,853 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:13:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:13:50,605 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:13:50,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:13:50,605 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:13:50,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:13:50,609 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:13:50,609 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:13:50,610 INFO L87 Difference]: Start difference. First operand 1738 states and 3133 transitions. Second operand 6 states. [2018-09-14 16:13:50,848 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-14 16:14:02,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:14:02,504 INFO L93 Difference]: Finished difference Result 5285 states and 9647 transitions. [2018-09-14 16:14:02,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 16:14:02,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 840 [2018-09-14 16:14:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:14:02,531 INFO L225 Difference]: With dead ends: 5285 [2018-09-14 16:14:02,531 INFO L226 Difference]: Without dead ends: 3553 [2018-09-14 16:14:02,537 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:14:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2018-09-14 16:14:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3489. [2018-09-14 16:14:02,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3489 states. [2018-09-14 16:14:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 6194 transitions. [2018-09-14 16:14:02,649 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 6194 transitions. Word has length 840 [2018-09-14 16:14:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:14:02,650 INFO L480 AbstractCegarLoop]: Abstraction has 3489 states and 6194 transitions. [2018-09-14 16:14:02,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:14:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 6194 transitions. [2018-09-14 16:14:02,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2018-09-14 16:14:02,697 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:14:02,698 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:14:02,698 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:14:02,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1362024261, now seen corresponding path program 1 times [2018-09-14 16:14:02,699 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:14:02,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:02,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:02,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:02,701 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:14:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:03,403 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:14:03,404 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:14:03,404 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:14:03,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:14:03,406 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:14:03,406 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:14:03,406 INFO L87 Difference]: Start difference. First operand 3489 states and 6194 transitions. Second operand 6 states. [2018-09-14 16:14:09,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:14:09,948 INFO L93 Difference]: Finished difference Result 8886 states and 15694 transitions. [2018-09-14 16:14:09,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:14:09,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 853 [2018-09-14 16:14:09,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:14:09,982 INFO L225 Difference]: With dead ends: 8886 [2018-09-14 16:14:09,982 INFO L226 Difference]: Without dead ends: 5403 [2018-09-14 16:14:09,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:14:09,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2018-09-14 16:14:10,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 5372. [2018-09-14 16:14:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5372 states. [2018-09-14 16:14:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 8379 transitions. [2018-09-14 16:14:10,140 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 8379 transitions. Word has length 853 [2018-09-14 16:14:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:14:10,141 INFO L480 AbstractCegarLoop]: Abstraction has 5372 states and 8379 transitions. [2018-09-14 16:14:10,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:14:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 8379 transitions. [2018-09-14 16:14:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2018-09-14 16:14:10,168 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:14:10,169 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 16:14:10,169 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:14:10,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1178781660, now seen corresponding path program 1 times [2018-09-14 16:14:10,170 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:14:10,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:10,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:10,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:10,173 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:14:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:10,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:14:10,908 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 16:14:10,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:10,919 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:14:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:11,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:14:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:14:12,580 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:14:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-14 16:14:13,805 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:14:13,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 16:14:13,805 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:14:13,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:14:13,808 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:14:13,808 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:14:13,808 INFO L87 Difference]: Start difference. First operand 5372 states and 8379 transitions. Second operand 3 states. [2018-09-14 16:14:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:14:18,796 INFO L93 Difference]: Finished difference Result 15937 states and 25473 transitions. [2018-09-14 16:14:18,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:14:18,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 860 [2018-09-14 16:14:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:14:18,872 INFO L225 Difference]: With dead ends: 15937 [2018-09-14 16:14:18,873 INFO L226 Difference]: Without dead ends: 10571 [2018-09-14 16:14:18,895 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1725 GetRequests, 1715 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:14:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10571 states. [2018-09-14 16:14:19,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10571 to 10571. [2018-09-14 16:14:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10571 states. [2018-09-14 16:14:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 16663 transitions. [2018-09-14 16:14:19,218 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 16663 transitions. Word has length 860 [2018-09-14 16:14:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:14:19,220 INFO L480 AbstractCegarLoop]: Abstraction has 10571 states and 16663 transitions. [2018-09-14 16:14:19,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:14:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 16663 transitions. [2018-09-14 16:14:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2018-09-14 16:14:19,260 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:14:19,261 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:19,262 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:14:19,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1147341953, now seen corresponding path program 1 times [2018-09-14 16:14:19,263 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:14:19,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:19,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:19,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:19,266 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:14:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:19,611 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:14:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:20,185 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:14:20,185 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:14:20,185 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:14:20,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:14:20,188 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:14:20,188 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:14:20,189 INFO L87 Difference]: Start difference. First operand 10571 states and 16663 transitions. Second operand 6 states. [2018-09-14 16:14:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:14:27,342 INFO L93 Difference]: Finished difference Result 26800 states and 43535 transitions. [2018-09-14 16:14:27,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:14:27,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 887 [2018-09-14 16:14:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:14:27,424 INFO L225 Difference]: With dead ends: 26800 [2018-09-14 16:14:27,424 INFO L226 Difference]: Without dead ends: 16235 [2018-09-14 16:14:27,465 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:14:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16235 states. [2018-09-14 16:14:27,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16235 to 16078. [2018-09-14 16:14:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16078 states. [2018-09-14 16:14:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16078 states to 16078 states and 24157 transitions. [2018-09-14 16:14:27,840 INFO L78 Accepts]: Start accepts. Automaton has 16078 states and 24157 transitions. Word has length 887 [2018-09-14 16:14:27,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:14:27,841 INFO L480 AbstractCegarLoop]: Abstraction has 16078 states and 24157 transitions. [2018-09-14 16:14:27,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:14:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16078 states and 24157 transitions. [2018-09-14 16:14:27,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2018-09-14 16:14:27,903 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:14:27,904 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:14:27,905 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:14:27,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1919586114, now seen corresponding path program 1 times [2018-09-14 16:14:27,905 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:14:27,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:27,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:27,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:27,907 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:14:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:28,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:14:28,931 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 16:14:28,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:28,941 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:14:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:29,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:14:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:29,648 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:14:30,339 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:30,362 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:14:30,362 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 16:14:30,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:30,524 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:14:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:31,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:14:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:32,109 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:14:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:32,592 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:14:32,592 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:14:32,592 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:14:32,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:14:32,594 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:14:32,595 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:14:32,595 INFO L87 Difference]: Start difference. First operand 16078 states and 24157 transitions. Second operand 9 states. [2018-09-14 16:14:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:14:51,234 INFO L93 Difference]: Finished difference Result 78460 states and 141025 transitions. [2018-09-14 16:14:51,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-14 16:14:51,234 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 896 [2018-09-14 16:14:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:14:51,644 INFO L225 Difference]: With dead ends: 78460 [2018-09-14 16:14:51,645 INFO L226 Difference]: Without dead ends: 62388 [2018-09-14 16:14:51,738 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3633 GetRequests, 3590 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=365, Invalid=1441, Unknown=0, NotChecked=0, Total=1806 [2018-09-14 16:14:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62388 states. [2018-09-14 16:14:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62388 to 56200. [2018-09-14 16:14:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56200 states. [2018-09-14 16:14:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56200 states to 56200 states and 80098 transitions. [2018-09-14 16:14:54,002 INFO L78 Accepts]: Start accepts. Automaton has 56200 states and 80098 transitions. Word has length 896 [2018-09-14 16:14:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:14:54,002 INFO L480 AbstractCegarLoop]: Abstraction has 56200 states and 80098 transitions. [2018-09-14 16:14:54,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:14:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 56200 states and 80098 transitions. [2018-09-14 16:14:54,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1471 [2018-09-14 16:14:54,232 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:14:54,233 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:14:54,233 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:14:54,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1469243842, now seen corresponding path program 1 times [2018-09-14 16:14:54,234 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:14:54,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:54,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:54,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:54,236 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:14:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 641 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:57,302 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:14:57,302 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 16:14:57,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:57,310 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:14:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:57,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:14:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-14 16:14:59,113 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:15:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 637 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-14 16:15:00,657 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:15:00,658 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-14 16:15:00,658 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:15:00,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:15:00,660 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:15:00,660 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:15:00,660 INFO L87 Difference]: Start difference. First operand 56200 states and 80098 transitions. Second operand 3 states. [2018-09-14 16:15:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:15:06,215 INFO L93 Difference]: Finished difference Result 111513 states and 158984 transitions. [2018-09-14 16:15:06,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:15:06,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1470 [2018-09-14 16:15:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:15:06,438 INFO L225 Difference]: With dead ends: 111513 [2018-09-14 16:15:06,439 INFO L226 Difference]: Without dead ends: 55319 [2018-09-14 16:15:06,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2949 GetRequests, 2939 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:15:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55319 states. [2018-09-14 16:15:07,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55319 to 55269. [2018-09-14 16:15:07,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55269 states. [2018-09-14 16:15:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55269 states to 55269 states and 74447 transitions. [2018-09-14 16:15:07,795 INFO L78 Accepts]: Start accepts. Automaton has 55269 states and 74447 transitions. Word has length 1470 [2018-09-14 16:15:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:15:07,799 INFO L480 AbstractCegarLoop]: Abstraction has 55269 states and 74447 transitions. [2018-09-14 16:15:07,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:15:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 55269 states and 74447 transitions. [2018-09-14 16:15:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1643 [2018-09-14 16:15:07,956 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:15:07,958 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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:15:07,958 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:15:07,959 INFO L82 PathProgramCache]: Analyzing trace with hash -149796092, now seen corresponding path program 1 times [2018-09-14 16:15:07,959 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:15:07,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:15:07,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:15:07,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:15:07,961 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:15:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:15:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 821 proven. 28 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 16:15:09,701 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:15:09,701 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:15:09,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:15:09,710 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:15:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:15:10,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:15:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2018-09-14 16:15:12,055 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:15:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 821 proven. 28 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 16:15:13,534 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:15:13,535 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:15:13,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:15:13,554 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:15:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:15:14,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:15:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2018-09-14 16:15:16,159 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:15:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 810 proven. 66 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 16:15:17,331 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:15:17,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:15:17,333 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:15:17,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:15:17,335 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:15:17,335 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:15:17,335 INFO L87 Difference]: Start difference. First operand 55269 states and 74447 transitions. Second operand 9 states. [2018-09-14 16:15:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:15:31,857 INFO L93 Difference]: Finished difference Result 177648 states and 253912 transitions. [2018-09-14 16:15:31,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-14 16:15:31,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1642 [2018-09-14 16:15:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:15:32,423 INFO L225 Difference]: With dead ends: 177648 [2018-09-14 16:15:32,424 INFO L226 Difference]: Without dead ends: 122385 [2018-09-14 16:15:32,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6620 GetRequests, 6581 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2018-09-14 16:15:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122385 states. [2018-09-14 16:15:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122385 to 119363. [2018-09-14 16:15:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119363 states. [2018-09-14 16:15:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119363 states to 119363 states and 152570 transitions. [2018-09-14 16:15:35,356 INFO L78 Accepts]: Start accepts. Automaton has 119363 states and 152570 transitions. Word has length 1642 [2018-09-14 16:15:35,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:15:35,357 INFO L480 AbstractCegarLoop]: Abstraction has 119363 states and 152570 transitions. [2018-09-14 16:15:35,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:15:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 119363 states and 152570 transitions. [2018-09-14 16:15:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2018-09-14 16:15:35,681 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:15:35,683 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:15:35,683 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:15:35,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1616846437, now seen corresponding path program 1 times [2018-09-14 16:15:35,684 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:15:35,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:15:35,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:15:35,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:15:35,686 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:15:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:15:36,274 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:15:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 890 proven. 92 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-09-14 16:15:38,720 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:15:38,720 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 16:15:38,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:15:38,732 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:15:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:15:39,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:15:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2018-09-14 16:15:40,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:15:41,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 890 proven. 92 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2018-09-14 16:15:41,918 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:15:41,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:15:41,920 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:15:41,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:15:41,921 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:15:41,921 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:15:41,922 INFO L87 Difference]: Start difference. First operand 119363 states and 152570 transitions. Second operand 5 states. [2018-09-14 16:15:49,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:15:49,206 INFO L93 Difference]: Finished difference Result 256853 states and 333698 transitions. [2018-09-14 16:15:49,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:15:49,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1732 [2018-09-14 16:15:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:15:49,763 INFO L225 Difference]: With dead ends: 256853 [2018-09-14 16:15:49,763 INFO L226 Difference]: Without dead ends: 137496 [2018-09-14 16:15:49,922 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3473 GetRequests, 3458 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:15:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137496 states. [2018-09-14 16:15:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137496 to 136206. [2018-09-14 16:15:52,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136206 states. [2018-09-14 16:15:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136206 states to 136206 states and 164545 transitions. [2018-09-14 16:15:53,004 INFO L78 Accepts]: Start accepts. Automaton has 136206 states and 164545 transitions. Word has length 1732 [2018-09-14 16:15:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:15:53,005 INFO L480 AbstractCegarLoop]: Abstraction has 136206 states and 164545 transitions. [2018-09-14 16:15:53,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:15:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 136206 states and 164545 transitions. [2018-09-14 16:15:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1884 [2018-09-14 16:15:53,250 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:15:53,252 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:15:53,252 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:15:53,253 INFO L82 PathProgramCache]: Analyzing trace with hash -243134498, now seen corresponding path program 1 times [2018-09-14 16:15:53,253 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:15:53,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:15:53,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:15:53,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:15:53,255 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:15:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:15:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1097 proven. 98 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2018-09-14 16:15:56,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:15:56,284 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:15:56,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:15:56,297 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:15:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:15:56,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:15:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 869 proven. 2 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2018-09-14 16:15:58,100 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:15:59,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1241 proven. 140 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-09-14 16:15:59,607 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:15:59,607 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:15:59,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:15:59,623 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:16:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:16:00,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:16:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 869 proven. 2 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2018-09-14 16:16:01,955 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:16:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1241 proven. 140 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-09-14 16:16:03,455 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:16:03,457 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 17 [2018-09-14 16:16:03,457 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:16:03,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 16:16:03,459 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 16:16:03,459 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-09-14 16:16:03,460 INFO L87 Difference]: Start difference. First operand 136206 states and 164545 transitions. Second operand 10 states. [2018-09-14 16:16:10,763 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 16:16:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:16:25,096 INFO L93 Difference]: Finished difference Result 280841 states and 367870 transitions. [2018-09-14 16:16:25,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-14 16:16:25,096 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1883 [2018-09-14 16:16:25,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:16:25,771 INFO L225 Difference]: With dead ends: 280841 [2018-09-14 16:16:25,772 INFO L226 Difference]: Without dead ends: 145476 [2018-09-14 16:16:25,941 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7639 GetRequests, 7563 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1844 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1036, Invalid=4816, Unknown=0, NotChecked=0, Total=5852 [2018-09-14 16:16:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145476 states. [2018-09-14 16:16:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145476 to 141124. [2018-09-14 16:16:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141124 states. [2018-09-14 16:16:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141124 states to 141124 states and 168177 transitions. [2018-09-14 16:16:29,530 INFO L78 Accepts]: Start accepts. Automaton has 141124 states and 168177 transitions. Word has length 1883 [2018-09-14 16:16:29,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:16:29,531 INFO L480 AbstractCegarLoop]: Abstraction has 141124 states and 168177 transitions. [2018-09-14 16:16:29,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 16:16:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 141124 states and 168177 transitions. [2018-09-14 16:16:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2053 [2018-09-14 16:16:29,705 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:16:29,706 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:16:29,707 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:16:29,708 INFO L82 PathProgramCache]: Analyzing trace with hash 919846237, now seen corresponding path program 1 times [2018-09-14 16:16:29,708 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:16:29,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:16:29,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:16:29,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:16:29,710 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:16:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:16:32,004 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 16:16:32,312 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-14 16:16:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1720 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-09-14 16:16:39,112 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:16:39,112 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:16:39,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:16:39,121 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:16:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:16:39,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:16:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1216 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2018-09-14 16:16:41,651 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:16:43,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1216 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2018-09-14 16:16:43,699 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 16:16:43,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 16:16:43,700 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:16:43,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:16:43,702 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:16:43,702 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:16:43,702 INFO L87 Difference]: Start difference. First operand 141124 states and 168177 transitions. Second operand 3 states. [2018-09-14 16:16:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:16:49,090 INFO L93 Difference]: Finished difference Result 279762 states and 334138 transitions. [2018-09-14 16:16:49,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:16:49,090 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2052 [2018-09-14 16:16:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:16:49,092 INFO L225 Difference]: With dead ends: 279762 [2018-09-14 16:16:49,092 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 16:16:49,656 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4116 GetRequests, 4104 SyntacticMatches, 6 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-14 16:16:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 16:16:49,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 16:16:49,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 16:16:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 16:16:49,658 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2052 [2018-09-14 16:16:49,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:16:49,659 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 16:16:49,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:16:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 16:16:49,659 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 16:16:49,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 16:16:51,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,724 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,870 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,871 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,888 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,889 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,955 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,966 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:51,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,047 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,052 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,265 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,334 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:52,499 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,255 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,285 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,286 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,335 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,453 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 16:16:53,469 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-09-14 16:16:53,685 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 16:16:53,687 INFO L168 Benchmark]: Toolchain (without parser) took 209118.62 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-14 16:16:53,688 INFO L168 Benchmark]: CDTParser took 0.21 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 16:16:53,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2263.01 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: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2018-09-14 16:16:53,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 157.23 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 16:16:53,694 INFO L168 Benchmark]: Boogie Preprocessor took 644.12 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.1 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 16:16:53,695 INFO L168 Benchmark]: RCFGBuilder took 12154.29 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 166.7 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -131.5 MB). Peak memory consumption was 708.3 MB. Max. memory is 7.1 GB. [2018-09-14 16:16:53,696 INFO L168 Benchmark]: TraceAbstraction took 193892.18 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -251.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-09-14 16:16:53,717 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2263.01 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: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 157.23 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 644.12 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.1 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 12154.29 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 166.7 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -131.5 MB). Peak memory consumption was 708.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 193892.18 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -251.0 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4790]: 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 1735. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label41_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-16-53-738.csv Completed graceful shutdown