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_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:21:45,848 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:21:45,850 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:21:45,862 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:21:45,863 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:21:45,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:21:45,865 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:21:45,867 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:21:45,868 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:21:45,869 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:21:45,870 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:21:45,870 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:21:45,871 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:21:45,872 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:21:45,873 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:21:45,874 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:21:45,875 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:21:45,877 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:21:45,879 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:21:45,880 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:21:45,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:21:45,882 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:21:45,885 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:21:45,885 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:21:45,885 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:21:45,886 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:21:45,887 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:21:45,888 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:21:45,889 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:21:45,890 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:21:45,890 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:21:45,891 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:21:45,891 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:21:45,891 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:21:45,892 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:21:45,893 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:21:45,893 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 10:21:45,910 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:21:45,911 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:21:45,912 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:21:45,913 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:21:45,913 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:21:45,913 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:21:45,913 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:21:45,913 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:21:45,914 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:21:45,914 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:21:45,914 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:21:45,914 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:21:45,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:21:45,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:21:45,916 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:21:45,916 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:21:45,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:21:45,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:21:45,916 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:21:45,918 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:21:45,918 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:21:45,919 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:21:45,919 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:21:45,919 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:21:45,919 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:21:45,920 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:21:45,920 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:21:45,920 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:21:45,920 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:21:45,920 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:21:45,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:21:45,921 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:21:45,921 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:21:45,921 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:21:45,971 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:21:45,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:21:45,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:21:45,990 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:21:45,990 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:21:45,991 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label25_true-unreach-call.c [2018-09-18 10:21:46,352 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dfd5a665/ea8b1a0e998046c4a8343f29add05f6c/FLAG676f0f040 [2018-09-18 10:21:46,831 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:21:46,832 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label25_true-unreach-call.c [2018-09-18 10:21:46,872 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dfd5a665/ea8b1a0e998046c4a8343f29add05f6c/FLAG676f0f040 [2018-09-18 10:21:46,896 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dfd5a665/ea8b1a0e998046c4a8343f29add05f6c [2018-09-18 10:21:46,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:21:46,915 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:21:46,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:21:46,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:21:46,928 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:21:46,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:21:46" (1/1) ... [2018-09-18 10:21:46,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f57d78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:46, skipping insertion in model container [2018-09-18 10:21:46,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:21:46" (1/1) ... [2018-09-18 10:21:46,948 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:21:48,263 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:21:48,285 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:21:48,912 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:21:49,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49 WrapperNode [2018-09-18 10:21:49,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:21:49,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:21:49,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:21:49,062 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:21:49,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... [2018-09-18 10:21:49,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... [2018-09-18 10:21:49,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:21:49,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:21:49,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:21:49,222 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:21:49,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... [2018-09-18 10:21:49,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... [2018-09-18 10:21:49,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... [2018-09-18 10:21:49,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... [2018-09-18 10:21:49,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... [2018-09-18 10:21:49,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... [2018-09-18 10:21:49,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... [2018-09-18 10:21:49,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:21:49,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:21:49,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:21:49,799 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:21:49,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:21:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:21:49,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:21:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 10:21:49,876 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 10:21:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 10:21:49,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 10:21:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 10:21:49,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 10:21:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:21:49,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:21:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:21:49,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:21:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:21:49,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:22:00,516 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:22:00,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:22:00 BoogieIcfgContainer [2018-09-18 10:22:00,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:22:00,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:22:00,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:22:00,521 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:22:00,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:21:46" (1/3) ... [2018-09-18 10:22:00,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e4bab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:22:00, skipping insertion in model container [2018-09-18 10:22:00,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:21:49" (2/3) ... [2018-09-18 10:22:00,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e4bab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:22:00, skipping insertion in model container [2018-09-18 10:22:00,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:22:00" (3/3) ... [2018-09-18 10:22:00,524 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label25_true-unreach-call.c [2018-09-18 10:22:00,535 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:22:00,546 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:22:00,609 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:22:00,610 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:22:00,610 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:22:00,610 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:22:00,610 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:22:00,610 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:22:00,610 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:22:00,611 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:22:00,611 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:22:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-18 10:22:00,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2018-09-18 10:22:00,711 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:22:00,713 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] [2018-09-18 10:22:00,715 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:22:00,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1515318282, now seen corresponding path program 1 times [2018-09-18 10:22:00,725 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:22:00,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:00,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:00,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:00,783 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:22:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:02,305 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:22:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:22:03,227 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:22:03,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:22:03,228 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:22:03,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:22:03,251 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:22:03,252 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:22:03,255 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-18 10:22:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:22:10,411 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-18 10:22:10,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:22:10,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 810 [2018-09-18 10:22:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:22:10,465 INFO L225 Difference]: With dead ends: 2647 [2018-09-18 10:22:10,466 INFO L226 Difference]: Without dead ends: 1738 [2018-09-18 10:22:10,477 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:22:10,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-18 10:22:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-18 10:22:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-18 10:22:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3121 transitions. [2018-09-18 10:22:10,648 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3121 transitions. Word has length 810 [2018-09-18 10:22:10,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:22:10,654 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3121 transitions. [2018-09-18 10:22:10,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:22:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3121 transitions. [2018-09-18 10:22:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2018-09-18 10:22:10,692 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:22:10,693 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:22:10,695 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:22:10,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1362262607, now seen corresponding path program 1 times [2018-09-18 10:22:10,696 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:22:10,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:10,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:10,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:10,698 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:22:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:11,137 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:22:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:22:11,635 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:22:11,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:22:11,635 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:22:11,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:22:11,639 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:22:11,639 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:22:11,639 INFO L87 Difference]: Start difference. First operand 1738 states and 3121 transitions. Second operand 6 states. [2018-09-18 10:22:21,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:22:21,969 INFO L93 Difference]: Finished difference Result 5353 states and 9715 transitions. [2018-09-18 10:22:21,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:22:21,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 869 [2018-09-18 10:22:21,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:22:21,995 INFO L225 Difference]: With dead ends: 5353 [2018-09-18 10:22:21,995 INFO L226 Difference]: Without dead ends: 3621 [2018-09-18 10:22:22,003 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:22:22,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2018-09-18 10:22:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3589. [2018-09-18 10:22:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2018-09-18 10:22:22,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 6080 transitions. [2018-09-18 10:22:22,101 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 6080 transitions. Word has length 869 [2018-09-18 10:22:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:22:22,102 INFO L480 AbstractCegarLoop]: Abstraction has 3589 states and 6080 transitions. [2018-09-18 10:22:22,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:22:22,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 6080 transitions. [2018-09-18 10:22:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 879 [2018-09-18 10:22:22,124 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:22:22,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:22:22,125 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:22:22,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1054926514, now seen corresponding path program 1 times [2018-09-18 10:22:22,126 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:22:22,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:22,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:22,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:22,128 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:22:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:22:23,385 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:23,385 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:22:23,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:23,402 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:23,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:22:24,654 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:22:25,509 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:25,509 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:22:25,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:25,527 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:26,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:22:27,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:22:28,225 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:22:28,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 10:22:28,226 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:22:28,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:22:28,229 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:22:28,230 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:22:28,230 INFO L87 Difference]: Start difference. First operand 3589 states and 6080 transitions. Second operand 9 states. [2018-09-18 10:22:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:22:43,524 INFO L93 Difference]: Finished difference Result 14737 states and 25721 transitions. [2018-09-18 10:22:43,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-18 10:22:43,525 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 878 [2018-09-18 10:22:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:22:43,595 INFO L225 Difference]: With dead ends: 14737 [2018-09-18 10:22:43,595 INFO L226 Difference]: Without dead ends: 11154 [2018-09-18 10:22:43,615 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3550 GetRequests, 3510 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2018-09-18 10:22:43,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2018-09-18 10:22:44,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 11024. [2018-09-18 10:22:44,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11024 states. [2018-09-18 10:22:44,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11024 states to 11024 states and 16890 transitions. [2018-09-18 10:22:44,149 INFO L78 Accepts]: Start accepts. Automaton has 11024 states and 16890 transitions. Word has length 878 [2018-09-18 10:22:44,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:22:44,150 INFO L480 AbstractCegarLoop]: Abstraction has 11024 states and 16890 transitions. [2018-09-18 10:22:44,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:22:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 11024 states and 16890 transitions. [2018-09-18 10:22:44,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2018-09-18 10:22:44,202 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:22:44,203 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:22:44,203 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:22:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1935764667, now seen corresponding path program 1 times [2018-09-18 10:22:44,204 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:22:44,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:44,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:44,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:44,206 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:22:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:44,550 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-18 10:22:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-18 10:22:45,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:45,240 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:22:45,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:45,247 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:45,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 10:22:46,178 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-18 10:22:46,627 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:22:46,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:22:46,628 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:22:46,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:22:46,629 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:22:46,629 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:22:46,629 INFO L87 Difference]: Start difference. First operand 11024 states and 16890 transitions. Second operand 5 states. [2018-09-18 10:22:54,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:22:54,364 INFO L93 Difference]: Finished difference Result 33474 states and 54793 transitions. [2018-09-18 10:22:54,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:22:54,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 917 [2018-09-18 10:22:54,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:22:54,490 INFO L225 Difference]: With dead ends: 33474 [2018-09-18 10:22:54,490 INFO L226 Difference]: Without dead ends: 22456 [2018-09-18 10:22:54,540 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1843 GetRequests, 1828 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:22:54,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22456 states. [2018-09-18 10:22:55,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22456 to 22257. [2018-09-18 10:22:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22257 states. [2018-09-18 10:22:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22257 states to 22257 states and 35192 transitions. [2018-09-18 10:22:55,270 INFO L78 Accepts]: Start accepts. Automaton has 22257 states and 35192 transitions. Word has length 917 [2018-09-18 10:22:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:22:55,270 INFO L480 AbstractCegarLoop]: Abstraction has 22257 states and 35192 transitions. [2018-09-18 10:22:55,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:22:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 22257 states and 35192 transitions. [2018-09-18 10:22:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2018-09-18 10:22:55,379 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:22:55,380 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:22:55,381 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:22:55,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1200890700, now seen corresponding path program 1 times [2018-09-18 10:22:55,381 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:22:55,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:55,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:55,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:55,383 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:22:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-18 10:22:56,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:56,592 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:22:56,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:56,604 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:56,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:56,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 10:22:57,359 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:57,987 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-18 10:22:58,011 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:58,011 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 [2018-09-18 10:22:58,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:58,028 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:58,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 10:22:59,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-18 10:22:59,792 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:22:59,793 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 10:22:59,794 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:22:59,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:22:59,796 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:22:59,797 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:22:59,797 INFO L87 Difference]: Start difference. First operand 22257 states and 35192 transitions. Second operand 9 states. [2018-09-18 10:23:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:23:18,825 INFO L93 Difference]: Finished difference Result 67534 states and 127047 transitions. [2018-09-18 10:23:18,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-18 10:23:18,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 935 [2018-09-18 10:23:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:23:19,263 INFO L225 Difference]: With dead ends: 67534 [2018-09-18 10:23:19,263 INFO L226 Difference]: Without dead ends: 45283 [2018-09-18 10:23:19,360 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3802 GetRequests, 3758 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=405, Invalid=1575, Unknown=0, NotChecked=0, Total=1980 [2018-09-18 10:23:19,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45283 states. [2018-09-18 10:23:20,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45283 to 43346. [2018-09-18 10:23:20,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43346 states. [2018-09-18 10:23:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43346 states to 43346 states and 60212 transitions. [2018-09-18 10:23:20,626 INFO L78 Accepts]: Start accepts. Automaton has 43346 states and 60212 transitions. Word has length 935 [2018-09-18 10:23:20,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:23:20,627 INFO L480 AbstractCegarLoop]: Abstraction has 43346 states and 60212 transitions. [2018-09-18 10:23:20,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:23:20,627 INFO L276 IsEmpty]: Start isEmpty. Operand 43346 states and 60212 transitions. [2018-09-18 10:23:20,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 945 [2018-09-18 10:23:20,722 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:20,723 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, 2, 2, 2, 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] [2018-09-18 10:23:20,723 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:20,728 INFO L82 PathProgramCache]: Analyzing trace with hash 610266080, now seen corresponding path program 1 times [2018-09-18 10:23:20,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:20,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:20,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:20,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:20,730 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 146 proven. 28 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 10:23:21,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:21,570 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:23:21,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:21,585 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:21,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:22,766 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 10:23:22,766 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 146 proven. 28 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 10:23:23,188 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:23,189 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:23:23,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:23,204 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:23,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-09-18 10:23:24,400 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 135 proven. 66 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 10:23:25,079 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:23:25,081 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 10:23:25,082 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:23:25,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:23:25,083 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:23:25,084 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:23:25,084 INFO L87 Difference]: Start difference. First operand 43346 states and 60212 transitions. Second operand 9 states. [2018-09-18 10:23:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:23:39,656 INFO L93 Difference]: Finished difference Result 145992 states and 221645 transitions. [2018-09-18 10:23:39,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-18 10:23:39,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 944 [2018-09-18 10:23:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:23:40,120 INFO L225 Difference]: With dead ends: 145992 [2018-09-18 10:23:40,121 INFO L226 Difference]: Without dead ends: 102652 [2018-09-18 10:23:40,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3828 GetRequests, 3789 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=316, Invalid=1166, Unknown=0, NotChecked=0, Total=1482 [2018-09-18 10:23:40,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102652 states. [2018-09-18 10:23:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102652 to 102024. [2018-09-18 10:23:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102024 states. [2018-09-18 10:23:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102024 states to 102024 states and 132643 transitions. [2018-09-18 10:23:42,595 INFO L78 Accepts]: Start accepts. Automaton has 102024 states and 132643 transitions. Word has length 944 [2018-09-18 10:23:42,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:23:42,595 INFO L480 AbstractCegarLoop]: Abstraction has 102024 states and 132643 transitions. [2018-09-18 10:23:42,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:23:42,596 INFO L276 IsEmpty]: Start isEmpty. Operand 102024 states and 132643 transitions. [2018-09-18 10:23:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2018-09-18 10:23:42,700 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:42,701 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:23:42,702 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:42,702 INFO L82 PathProgramCache]: Analyzing trace with hash -722008333, now seen corresponding path program 1 times [2018-09-18 10:23:42,702 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:42,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:42,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:42,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:42,704 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:43,611 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:23:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 259 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 10:23:45,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:45,133 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:23:45,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:45,141 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:45,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:46,422 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:23:47,371 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:23:47,372 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-09-18 10:23:47,372 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:23:47,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:23:47,373 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:23:47,373 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:23:47,374 INFO L87 Difference]: Start difference. First operand 102024 states and 132643 transitions. Second operand 3 states. [2018-09-18 10:23:52,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:23:52,657 INFO L93 Difference]: Finished difference Result 202966 states and 264541 transitions. [2018-09-18 10:23:52,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:23:52,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1079 [2018-09-18 10:23:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:23:53,017 INFO L225 Difference]: With dead ends: 202966 [2018-09-18 10:23:53,017 INFO L226 Difference]: Without dead ends: 100948 [2018-09-18 10:23:53,195 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2170 GetRequests, 2160 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:23:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100948 states. [2018-09-18 10:23:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100948 to 100928. [2018-09-18 10:23:54,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100928 states. [2018-09-18 10:23:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100928 states to 100928 states and 126300 transitions. [2018-09-18 10:23:54,973 INFO L78 Accepts]: Start accepts. Automaton has 100928 states and 126300 transitions. Word has length 1079 [2018-09-18 10:23:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:23:54,974 INFO L480 AbstractCegarLoop]: Abstraction has 100928 states and 126300 transitions. [2018-09-18 10:23:54,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:23:54,974 INFO L276 IsEmpty]: Start isEmpty. Operand 100928 states and 126300 transitions. [2018-09-18 10:23:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1159 [2018-09-18 10:23:55,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:55,073 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, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:23:55,073 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:55,073 INFO L82 PathProgramCache]: Analyzing trace with hash -773322363, now seen corresponding path program 1 times [2018-09-18 10:23:55,074 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:55,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:55,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:55,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:55,075 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:56,384 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 10:23:56,703 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 10:23:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 393 proven. 50 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-09-18 10:23:57,478 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:57,479 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:23:57,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:57,487 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:57,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 537 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 10:23:58,930 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 537 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 10:23:59,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:59,937 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:23:59,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:59,955 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:00,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 537 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 10:24:01,743 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 537 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 10:24:02,390 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:24:02,390 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 18 [2018-09-18 10:24:02,390 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:24:02,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 10:24:02,392 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 10:24:02,392 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:24:02,393 INFO L87 Difference]: Start difference. First operand 100928 states and 126300 transitions. Second operand 10 states. [2018-09-18 10:24:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:23,191 INFO L93 Difference]: Finished difference Result 256240 states and 328673 transitions. [2018-09-18 10:24:23,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-18 10:24:23,192 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1158 [2018-09-18 10:24:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:23,531 INFO L225 Difference]: With dead ends: 256240 [2018-09-18 10:24:23,531 INFO L226 Difference]: Without dead ends: 130463 [2018-09-18 10:24:23,737 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4701 GetRequests, 4649 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=512, Invalid=2244, Unknown=0, NotChecked=0, Total=2756 [2018-09-18 10:24:23,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130463 states. [2018-09-18 10:24:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130463 to 122926. [2018-09-18 10:24:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122926 states. [2018-09-18 10:24:25,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122926 states to 122926 states and 134832 transitions. [2018-09-18 10:24:25,357 INFO L78 Accepts]: Start accepts. Automaton has 122926 states and 134832 transitions. Word has length 1158 [2018-09-18 10:24:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:25,358 INFO L480 AbstractCegarLoop]: Abstraction has 122926 states and 134832 transitions. [2018-09-18 10:24:25,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 10:24:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 122926 states and 134832 transitions. [2018-09-18 10:24:25,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1189 [2018-09-18 10:24:25,722 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:25,723 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:24:25,723 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:25,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2017115152, now seen corresponding path program 1 times [2018-09-18 10:24:25,724 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:25,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:25,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:25,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:25,725 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 370 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:26,887 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:26,887 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:24:26,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:26,896 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:27,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 476 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:28,061 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 476 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:29,069 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:29,070 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:24:29,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:29,086 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:29,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 476 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:30,418 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 476 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:24:31,037 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:24:31,039 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 15 [2018-09-18 10:24:31,040 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:24:31,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 10:24:31,042 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 10:24:31,042 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:24:31,042 INFO L87 Difference]: Start difference. First operand 122926 states and 134832 transitions. Second operand 13 states. [2018-09-18 10:24:42,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:42,780 INFO L93 Difference]: Finished difference Result 249609 states and 275278 transitions. [2018-09-18 10:24:42,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-18 10:24:42,781 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1188 [2018-09-18 10:24:42,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:43,163 INFO L225 Difference]: With dead ends: 249609 [2018-09-18 10:24:43,163 INFO L226 Difference]: Without dead ends: 127524 [2018-09-18 10:24:43,320 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4809 GetRequests, 4761 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=1632, Unknown=0, NotChecked=0, Total=2162 [2018-09-18 10:24:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127524 states. [2018-09-18 10:24:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127524 to 120708. [2018-09-18 10:24:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120708 states. [2018-09-18 10:24:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120708 states to 120708 states and 129729 transitions. [2018-09-18 10:24:44,786 INFO L78 Accepts]: Start accepts. Automaton has 120708 states and 129729 transitions. Word has length 1188 [2018-09-18 10:24:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:44,787 INFO L480 AbstractCegarLoop]: Abstraction has 120708 states and 129729 transitions. [2018-09-18 10:24:44,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-18 10:24:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 120708 states and 129729 transitions. [2018-09-18 10:24:44,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1471 [2018-09-18 10:24:44,914 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:44,915 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:24:44,915 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:44,916 INFO L82 PathProgramCache]: Analyzing trace with hash -295527253, now seen corresponding path program 1 times [2018-09-18 10:24:44,916 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:44,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:44,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:44,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:44,917 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 979 proven. 336 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-09-18 10:24:51,049 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:51,049 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:24:51,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:51,057 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:51,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-18 10:24:52,484 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-18 10:24:53,583 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:53,583 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:24:53,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:53,605 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:54,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-18 10:24:55,413 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 1038 proven. 2 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2018-09-18 10:24:56,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:24:56,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5, 5, 5] total 27 [2018-09-18 10:24:56,374 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:24:56,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-18 10:24:56,375 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-18 10:24:56,376 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2018-09-18 10:24:56,376 INFO L87 Difference]: Start difference. First operand 120708 states and 129729 transitions. Second operand 21 states. [2018-09-18 10:24:58,146 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2018-09-18 10:24:58,349 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2018-09-18 10:25:01,081 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-09-18 10:25:02,857 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-09-18 10:25:03,319 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-09-18 10:25:07,619 WARN L178 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-09-18 10:25:08,151 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2018-09-18 10:25:08,888 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2018-09-18 10:25:13,961 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2018-09-18 10:25:14,452 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2018-09-18 10:25:15,925 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2018-09-18 10:25:16,127 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2018-09-18 10:25:17,795 WARN L178 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-09-18 10:25:18,582 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 61 [2018-09-18 10:25:20,537 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2018-09-18 10:25:21,319 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2018-09-18 10:25:24,876 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-09-18 10:25:25,148 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2018-09-18 10:25:26,138 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 Received shutdown request... [2018-09-18 10:25:28,968 WARN L186 SmtUtils]: Removed 2 from assertion stack [2018-09-18 10:25:28,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-18 10:25:28,969 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:25:28,974 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:25:28,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:25:28 BoogieIcfgContainer [2018-09-18 10:25:28,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:25:28,976 INFO L168 Benchmark]: Toolchain (without parser) took 222065.25 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -469.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-18 10:25:28,977 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. [2018-09-18 10:25:28,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2141.78 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. [2018-09-18 10:25:28,980 INFO L168 Benchmark]: Boogie Procedure Inliner took 159.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:25:28,981 INFO L168 Benchmark]: Boogie Preprocessor took 576.42 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.6 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2018-09-18 10:25:28,982 INFO L168 Benchmark]: RCFGBuilder took 10718.22 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 173.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -137.0 MB). Peak memory consumption was 703.2 MB. Max. memory is 7.1 GB. [2018-09-18 10:25:28,984 INFO L168 Benchmark]: TraceAbstraction took 208456.76 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 556.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-18 10:25:28,990 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 2141.78 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 159.67 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 576.42 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 864.6 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 10718.22 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 173.0 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -137.0 MB). Peak memory consumption was 703.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208456.76 ms. Allocated memory was 2.6 GB in the beginning and 4.0 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 556.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4748]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4748). Cancelled while BasicCegarLoop was constructing difference of abstraction (120708states) and FLOYD_HOARE automaton (currently 53 states, 21 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 80. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 208.3s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 147.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3081 SDtfs, 79554 SDslu, 3662 SDs, 0 SdLazy, 95909 SolverSat, 29891 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30699 GetRequests, 30361 SyntacticMatches, 26 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4009 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122926occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 17299 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.3s SsaConstructionTime, 6.9s SatisfiabilityAnalysisTime, 30.1s InterpolantComputationTime, 25390 NumberOfCodeBlocks, 25390 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 40494 ConstructedInterpolants, 0 QuantifiedInterpolants, 88679452 SizeOfPredicates, 9 NumberOfNonLiveVariables, 21550 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 38 InterpolantComputations, 5 PerfectInterpolantSequences, 15661/16706 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label25_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-25-29-004.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label25_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-25-29-004.csv Completed graceful shutdown