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/Problem05_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:18:24,627 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:18:24,630 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:18:24,642 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:18:24,643 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:18:24,644 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:18:24,645 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:18:24,649 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:18:24,650 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:18:24,651 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:18:24,652 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:18:24,652 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:18:24,653 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:18:24,654 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:18:24,655 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:18:24,656 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:18:24,657 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:18:24,659 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:18:24,661 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:18:24,662 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:18:24,663 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:18:24,665 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:18:24,667 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:18:24,668 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:18:24,668 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:18:24,669 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:18:24,670 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:18:24,671 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:18:24,671 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:18:24,673 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:18:24,673 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:18:24,674 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:18:24,674 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:18:24,674 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:18:24,675 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:18:24,676 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:18:24,676 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 16:18:24,702 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:18:24,703 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:18:24,704 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:18:24,704 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:18:24,704 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:18:24,704 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:18:24,707 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:18:24,707 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:18:24,707 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:18:24,707 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:18:24,708 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:18:24,708 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:18:24,709 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:18:24,709 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:18:24,709 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:18:24,709 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:18:24,709 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:18:24,709 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:18:24,710 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:18:24,710 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:18:24,710 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:18:24,710 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:18:24,710 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:18:24,711 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:18:24,711 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:18:24,711 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:18:24,713 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:18:24,713 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:18:24,713 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:18:24,713 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:18:24,713 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:18:24,714 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:18:24,714 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:18:24,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:18:24,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:18:24,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:18:24,780 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:18:24,780 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:18:24,781 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label08_true-unreach-call.c [2018-09-14 16:18:25,142 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27bd1fd0/a106decac421434f9eaff7569b4550c2/FLAG46b5b272c [2018-09-14 16:18:25,816 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:18:25,819 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label08_true-unreach-call.c [2018-09-14 16:18:25,873 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27bd1fd0/a106decac421434f9eaff7569b4550c2/FLAG46b5b272c [2018-09-14 16:18:25,896 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f27bd1fd0/a106decac421434f9eaff7569b4550c2 [2018-09-14 16:18:25,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:18:25,916 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:18:25,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:18:25,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:18:25,926 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:18:25,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:18:25" (1/1) ... [2018-09-14 16:18:25,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e73d3bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:25, skipping insertion in model container [2018-09-14 16:18:25,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:18:25" (1/1) ... [2018-09-14 16:18:25,942 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:18:28,045 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:18:28,064 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:18:29,418 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:18:29,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29 WrapperNode [2018-09-14 16:18:29,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:18:29,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:18:29,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:18:29,876 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:18:29,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (1/1) ... [2018-09-14 16:18:29,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (1/1) ... [2018-09-14 16:18:30,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:18:30,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:18:30,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:18:30,040 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:18:30,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (1/1) ... [2018-09-14 16:18:30,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (1/1) ... [2018-09-14 16:18:30,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (1/1) ... [2018-09-14 16:18:30,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (1/1) ... [2018-09-14 16:18:30,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (1/1) ... [2018-09-14 16:18:30,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (1/1) ... [2018-09-14 16:18:31,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (1/1) ... [2018-09-14 16:18:31,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:18:31,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:18:31,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:18:31,064 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:18:31,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (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 16:18:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:18:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:18:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2018-09-14 16:18:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2018-09-14 16:18:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:18:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:18:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2018-09-14 16:18:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2018-09-14 16:18:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-09-14 16:18:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-09-14 16:18:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-09-14 16:18:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-09-14 16:18:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 16:18:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 16:18:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 16:18:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 16:18:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 16:18:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 16:18:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:18:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:18:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:18:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:18:45,370 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:18:45,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:18:45 BoogieIcfgContainer [2018-09-14 16:18:45,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:18:45,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:18:45,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:18:45,376 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:18:45,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:18:25" (1/3) ... [2018-09-14 16:18:45,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa77104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:18:45, skipping insertion in model container [2018-09-14 16:18:45,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:18:29" (2/3) ... [2018-09-14 16:18:45,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa77104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:18:45, skipping insertion in model container [2018-09-14 16:18:45,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:18:45" (3/3) ... [2018-09-14 16:18:45,380 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label08_true-unreach-call.c [2018-09-14 16:18:45,390 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:18:45,402 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:18:45,480 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:18:45,480 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:18:45,481 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:18:45,481 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:18:45,481 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:18:45,481 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:18:45,481 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:18:45,481 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:18:45,482 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:18:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states. [2018-09-14 16:18:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1687 [2018-09-14 16:18:45,696 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:18:45,699 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:18:45,701 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:18:45,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1663273173, now seen corresponding path program 1 times [2018-09-14 16:18:45,711 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:18:45,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:18:45,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:18:45,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:18:45,769 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:18:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:18:48,429 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:18:52,174 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 16:18:52,176 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:18:52,177 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:18:52,177 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:18:52,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:18:52,202 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:18:52,202 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:18:52,204 INFO L87 Difference]: Start difference. First operand 2223 states. Second operand 3 states. [2018-09-14 16:19:05,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:19:05,793 INFO L93 Difference]: Finished difference Result 6256 states and 11791 transitions. [2018-09-14 16:19:05,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:19:05,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1686 [2018-09-14 16:19:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:19:05,857 INFO L225 Difference]: With dead ends: 6256 [2018-09-14 16:19:05,857 INFO L226 Difference]: Without dead ends: 4031 [2018-09-14 16:19:05,872 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 9 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:19:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2018-09-14 16:19:06,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 4015. [2018-09-14 16:19:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4015 states. [2018-09-14 16:19:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 7372 transitions. [2018-09-14 16:19:06,104 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 7372 transitions. Word has length 1686 [2018-09-14 16:19:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:19:06,109 INFO L480 AbstractCegarLoop]: Abstraction has 4015 states and 7372 transitions. [2018-09-14 16:19:06,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:19:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 7372 transitions. [2018-09-14 16:19:06,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2018-09-14 16:19:06,266 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:19:06,267 INFO L376 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:06,268 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:19:06,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1796861371, now seen corresponding path program 1 times [2018-09-14 16:19:06,269 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:19:06,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:19:06,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:19:06,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:19:06,272 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:19:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:19:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:19:10,189 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:19:10,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 16:19:10,189 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:19:10,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 16:19:10,194 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 16:19:10,194 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 16:19:10,194 INFO L87 Difference]: Start difference. First operand 4015 states and 7372 transitions. Second operand 4 states. [2018-09-14 16:19:28,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:19:28,563 INFO L93 Difference]: Finished difference Result 15142 states and 28555 transitions. [2018-09-14 16:19:28,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 16:19:28,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1709 [2018-09-14 16:19:28,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:19:28,634 INFO L225 Difference]: With dead ends: 15142 [2018-09-14 16:19:28,634 INFO L226 Difference]: Without dead ends: 11133 [2018-09-14 16:19:28,650 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 16:19:28,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11133 states. [2018-09-14 16:19:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11133 to 11024. [2018-09-14 16:19:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11024 states. [2018-09-14 16:19:29,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11024 states to 11024 states and 18745 transitions. [2018-09-14 16:19:29,006 INFO L78 Accepts]: Start accepts. Automaton has 11024 states and 18745 transitions. Word has length 1709 [2018-09-14 16:19:29,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:19:29,009 INFO L480 AbstractCegarLoop]: Abstraction has 11024 states and 18745 transitions. [2018-09-14 16:19:29,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 16:19:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 11024 states and 18745 transitions. [2018-09-14 16:19:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1714 [2018-09-14 16:19:29,095 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:19:29,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:29,098 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:19:29,099 INFO L82 PathProgramCache]: Analyzing trace with hash 87205247, now seen corresponding path program 1 times [2018-09-14 16:19:29,099 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:19:29,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:19:29,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:19:29,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:19:29,101 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:19:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:19:29,486 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:19:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:19:30,627 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:19:30,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:19:30,628 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:19:30,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:19:30,630 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:19:30,630 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:19:30,631 INFO L87 Difference]: Start difference. First operand 11024 states and 18745 transitions. Second operand 6 states. [2018-09-14 16:19:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:19:47,842 INFO L93 Difference]: Finished difference Result 32951 states and 57806 transitions. [2018-09-14 16:19:47,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:19:47,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1713 [2018-09-14 16:19:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:19:48,006 INFO L225 Difference]: With dead ends: 32951 [2018-09-14 16:19:48,006 INFO L226 Difference]: Without dead ends: 21933 [2018-09-14 16:19:48,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:19:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21933 states. [2018-09-14 16:19:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21933 to 21758. [2018-09-14 16:19:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21758 states. [2018-09-14 16:19:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21758 states to 21758 states and 35827 transitions. [2018-09-14 16:19:48,656 INFO L78 Accepts]: Start accepts. Automaton has 21758 states and 35827 transitions. Word has length 1713 [2018-09-14 16:19:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:19:48,656 INFO L480 AbstractCegarLoop]: Abstraction has 21758 states and 35827 transitions. [2018-09-14 16:19:48,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:19:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand 21758 states and 35827 transitions. [2018-09-14 16:19:48,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2018-09-14 16:19:48,766 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:19:48,768 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:48,768 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:19:48,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1146842742, now seen corresponding path program 1 times [2018-09-14 16:19:48,770 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:19:48,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:19:48,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:19:48,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:19:48,773 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:19:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:19:49,314 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:19:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 16:19:50,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:19:50,893 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 16:19:50,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:19:50,905 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:19:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:19:51,530 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:19:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-09-14 16:19:52,859 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:19:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-14 16:19:54,372 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:19:54,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-09-14 16:19:54,466 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:19:54,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:19:54,467 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:19:54,468 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:19:54,468 INFO L87 Difference]: Start difference. First operand 21758 states and 35827 transitions. Second operand 3 states. [2018-09-14 16:20:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:20:04,476 INFO L93 Difference]: Finished difference Result 50657 states and 85989 transitions. [2018-09-14 16:20:04,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:20:04,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1732 [2018-09-14 16:20:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:20:04,631 INFO L225 Difference]: With dead ends: 50657 [2018-09-14 16:20:04,631 INFO L226 Difference]: Without dead ends: 28904 [2018-09-14 16:20:04,695 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3470 GetRequests, 3463 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-14 16:20:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28904 states. [2018-09-14 16:20:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28904 to 28817. [2018-09-14 16:20:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28817 states. [2018-09-14 16:20:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28817 states to 28817 states and 44797 transitions. [2018-09-14 16:20:05,543 INFO L78 Accepts]: Start accepts. Automaton has 28817 states and 44797 transitions. Word has length 1732 [2018-09-14 16:20:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:20:05,543 INFO L480 AbstractCegarLoop]: Abstraction has 28817 states and 44797 transitions. [2018-09-14 16:20:05,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:20:05,544 INFO L276 IsEmpty]: Start isEmpty. Operand 28817 states and 44797 transitions. [2018-09-14 16:20:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1747 [2018-09-14 16:20:05,647 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:20:05,648 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:05,648 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:20:05,650 INFO L82 PathProgramCache]: Analyzing trace with hash -87253472, now seen corresponding path program 1 times [2018-09-14 16:20:05,650 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:20:05,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:20:05,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:20:05,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:20:05,651 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:20:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:20:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:20:08,077 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:20:08,078 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 16:20:08,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:20:08,088 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:20:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:20:08,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:20:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:20:10,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:20:10,467 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 16:20:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:20:11,822 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:20:11,822 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 16:20:11,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:20:11,839 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:20:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:20:12,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:20:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:20:14,973 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:20:16,284 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:20:16,287 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:20:16,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 16:20:16,289 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:20:16,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:20:16,291 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:20:16,292 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:20:16,292 INFO L87 Difference]: Start difference. First operand 28817 states and 44797 transitions. Second operand 9 states. [2018-09-14 16:20:17,224 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 16:21:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:21:11,374 INFO L93 Difference]: Finished difference Result 192531 states and 430595 transitions. [2018-09-14 16:21:11,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-14 16:21:11,375 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1746 [2018-09-14 16:21:11,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:21:12,882 INFO L225 Difference]: With dead ends: 192531 [2018-09-14 16:21:12,882 INFO L226 Difference]: Without dead ends: 163720 [2018-09-14 16:21:13,041 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7073 GetRequests, 7012 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=681, Invalid=2979, Unknown=0, NotChecked=0, Total=3660 [2018-09-14 16:21:13,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163720 states. [2018-09-14 16:21:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163720 to 161402. [2018-09-14 16:21:18,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161402 states. [2018-09-14 16:21:19,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161402 states to 161402 states and 260827 transitions. [2018-09-14 16:21:19,227 INFO L78 Accepts]: Start accepts. Automaton has 161402 states and 260827 transitions. Word has length 1746 [2018-09-14 16:21:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:21:19,229 INFO L480 AbstractCegarLoop]: Abstraction has 161402 states and 260827 transitions. [2018-09-14 16:21:19,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:21:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 161402 states and 260827 transitions. [2018-09-14 16:21:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2001 [2018-09-14 16:21:19,934 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:21:19,936 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:21:19,936 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:21:19,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1345137327, now seen corresponding path program 1 times [2018-09-14 16:21:19,937 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:21:19,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:21:19,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:21:19,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:21:19,939 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:21:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:21:21,755 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:21:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 306 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:21:25,009 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:21:25,009 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 16:21:25,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:21:25,017 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:21:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:21:25,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:21:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:21:28,591 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:21:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:21:31,011 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:21:31,011 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:21:31,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:21:31,027 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:21:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:21:32,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:21:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:21:34,198 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:21:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 345 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:21:36,275 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:21:36,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 15 [2018-09-14 16:21:36,276 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:21:36,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 16:21:36,279 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 16:21:36,279 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-09-14 16:21:36,280 INFO L87 Difference]: Start difference. First operand 161402 states and 260827 transitions. Second operand 13 states. Received shutdown request... [2018-09-14 16:22:02,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-14 16:22:02,701 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:22:02,707 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:22:02,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:22:02 BoogieIcfgContainer [2018-09-14 16:22:02,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:22:02,708 INFO L168 Benchmark]: Toolchain (without parser) took 216796.34 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -909.9 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-14 16:22:02,709 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 16:22:02,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3958.05 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 203.4 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -221.6 MB). Peak memory consumption was 475.1 MB. Max. memory is 7.1 GB. [2018-09-14 16:22:02,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 162.99 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2018-09-14 16:22:02,712 INFO L168 Benchmark]: Boogie Preprocessor took 1023.78 ms. Allocated memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: 652.2 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -635.8 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-09-14 16:22:02,713 INFO L168 Benchmark]: RCFGBuilder took 14308.04 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 297.3 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 239.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-14 16:22:02,714 INFO L168 Benchmark]: TraceAbstraction took 197334.85 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 947.9 MB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -313.7 MB). Peak memory consumption was 634.2 MB. Max. memory is 7.1 GB. [2018-09-14 16:22:02,719 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3958.05 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 203.4 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -221.6 MB). Peak memory consumption was 475.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 162.99 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1023.78 ms. Allocated memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: 652.2 MB). Free memory was 1.6 GB in the beginning and 2.2 GB in the end (delta: -635.8 MB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14308.04 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 297.3 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 239.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 197334.85 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 947.9 MB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -313.7 MB). Peak memory consumption was 634.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 11039]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 11039). Cancelled while BasicCegarLoop was constructing difference of abstraction (161402states) and FLOYD_HOARE automaton (currently 52 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (194379 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 2223 locations, 1 error locations. TIMEOUT Result, 197.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 142.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8534 SDtfs, 52850 SDslu, 7239 SDs, 0 SdLazy, 99496 SolverSat, 31980 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18660 GetRequests, 18506 SyntacticMatches, 21 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2183 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161402occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 2705 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 27.3s InterpolantComputationTime, 19810 NumberOfCodeBlocks, 19810 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 29018 ConstructedInterpolants, 0 QuantifiedInterpolants, 79734510 SizeOfPredicates, 2 NumberOfNonLiveVariables, 11528 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 2248/2321 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem05_label08_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-22-02-738.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem05_label08_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_16-22-02-738.csv Completed graceful shutdown