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_label57_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:26:41,991 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:26:41,993 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:26:42,005 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:26:42,005 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:26:42,006 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:26:42,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:26:42,009 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:26:42,011 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:26:42,012 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:26:42,013 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:26:42,013 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:26:42,014 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:26:42,015 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:26:42,017 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:26:42,017 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:26:42,018 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:26:42,020 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:26:42,022 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:26:42,024 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:26:42,025 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:26:42,026 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:26:42,029 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:26:42,029 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:26:42,029 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:26:42,030 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:26:42,031 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:26:42,032 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:26:42,033 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:26:42,034 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:26:42,035 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:26:42,035 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:26:42,036 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:26:42,036 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:26:42,037 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:26:42,038 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:26:42,038 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 10:26:42,054 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:26:42,055 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:26:42,056 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:26:42,056 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:26:42,056 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:26:42,056 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:26:42,057 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:26:42,057 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:26:42,057 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:26:42,057 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:26:42,058 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:26:42,058 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:26:42,059 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:26:42,059 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:26:42,059 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:26:42,059 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:26:42,059 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:26:42,059 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:26:42,060 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:26:42,060 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:26:42,060 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:26:42,060 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:26:42,060 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:26:42,061 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:26:42,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:26:42,061 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:26:42,061 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:26:42,061 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:26:42,062 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:26:42,062 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:26:42,062 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:26:42,062 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:26:42,062 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:26:42,063 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:26:42,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:26:42,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:26:42,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:26:42,131 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:26:42,131 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:26:42,132 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label57_true-unreach-call_false-termination.c [2018-09-18 10:26:42,511 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ea8789a/fb2e3ef647f2427d917ba5ad0e62fb30/FLAGe7fe72f0a [2018-09-18 10:26:42,982 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:26:42,983 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label57_true-unreach-call_false-termination.c [2018-09-18 10:26:43,015 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ea8789a/fb2e3ef647f2427d917ba5ad0e62fb30/FLAGe7fe72f0a [2018-09-18 10:26:43,038 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00ea8789a/fb2e3ef647f2427d917ba5ad0e62fb30 [2018-09-18 10:26:43,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:26:43,054 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:26:43,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:26:43,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:26:43,067 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:26:43,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:26:43" (1/1) ... [2018-09-18 10:26:43,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7008f1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:43, skipping insertion in model container [2018-09-18 10:26:43,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:26:43" (1/1) ... [2018-09-18 10:26:43,086 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:26:44,459 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:26:44,481 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:26:45,176 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:26:45,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45 WrapperNode [2018-09-18 10:26:45,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:26:45,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:26:45,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:26:45,326 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:26:45,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (1/1) ... [2018-09-18 10:26:45,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (1/1) ... [2018-09-18 10:26:45,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:26:45,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:26:45,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:26:45,470 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:26:45,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (1/1) ... [2018-09-18 10:26:45,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (1/1) ... [2018-09-18 10:26:45,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (1/1) ... [2018-09-18 10:26:45,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (1/1) ... [2018-09-18 10:26:46,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (1/1) ... [2018-09-18 10:26:46,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (1/1) ... [2018-09-18 10:26:46,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (1/1) ... [2018-09-18 10:26:46,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:26:46,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:26:46,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:26:46,092 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:26:46,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (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 10:26:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:26:46,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:26:46,159 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 10:26:46,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 10:26:46,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 10:26:46,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 10:26:46,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 10:26:46,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 10:26:46,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:26:46,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:26:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:26:46,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:26:46,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:26:46,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:26:55,621 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:26:55,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:26:55 BoogieIcfgContainer [2018-09-18 10:26:55,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:26:55,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:26:55,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:26:55,627 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:26:55,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:26:43" (1/3) ... [2018-09-18 10:26:55,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa2bc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:26:55, skipping insertion in model container [2018-09-18 10:26:55,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:26:45" (2/3) ... [2018-09-18 10:26:55,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa2bc7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:26:55, skipping insertion in model container [2018-09-18 10:26:55,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:26:55" (3/3) ... [2018-09-18 10:26:55,630 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label57_true-unreach-call_false-termination.c [2018-09-18 10:26:55,639 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:26:55,648 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:26:55,715 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:26:55,716 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:26:55,716 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:26:55,716 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:26:55,716 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:26:55,716 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:26:55,716 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:26:55,717 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:26:55,717 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:26:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-18 10:26:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2018-09-18 10:26:55,818 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:26:55,820 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] [2018-09-18 10:26:55,822 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:26:55,828 INFO L82 PathProgramCache]: Analyzing trace with hash -998572169, now seen corresponding path program 1 times [2018-09-18 10:26:55,831 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:26:55,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:26:55,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:26:55,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:26:55,886 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:26:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:26:58,319 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 10:26:58,322 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:26:58,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 10:26:58,322 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:26:58,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 10:26:58,344 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 10:26:58,345 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:26:58,348 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 4 states. [2018-09-18 10:27:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:27:08,339 INFO L93 Difference]: Finished difference Result 3486 states and 6774 transitions. [2018-09-18 10:27:08,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 10:27:08,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 807 [2018-09-18 10:27:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:27:08,396 INFO L225 Difference]: With dead ends: 3486 [2018-09-18 10:27:08,397 INFO L226 Difference]: Without dead ends: 2573 [2018-09-18 10:27:08,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:27:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2018-09-18 10:27:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2573. [2018-09-18 10:27:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2018-09-18 10:27:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4899 transitions. [2018-09-18 10:27:08,611 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4899 transitions. Word has length 807 [2018-09-18 10:27:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:27:08,618 INFO L480 AbstractCegarLoop]: Abstraction has 2573 states and 4899 transitions. [2018-09-18 10:27:08,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 10:27:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4899 transitions. [2018-09-18 10:27:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2018-09-18 10:27:08,657 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:27:08,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:08,660 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:27:08,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1119281760, now seen corresponding path program 1 times [2018-09-18 10:27:08,661 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:27:08,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:27:08,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:27:08,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:27:08,664 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:27:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:27:09,046 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:27:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:27:09,471 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:27:09,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:27:09,472 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:27:09,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:27:09,475 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:27:09,475 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:27:09,475 INFO L87 Difference]: Start difference. First operand 2573 states and 4899 transitions. Second operand 6 states. [2018-09-18 10:27:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:27:17,964 INFO L93 Difference]: Finished difference Result 6136 states and 11680 transitions. [2018-09-18 10:27:17,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:27:17,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 881 [2018-09-18 10:27:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:27:17,997 INFO L225 Difference]: With dead ends: 6136 [2018-09-18 10:27:17,998 INFO L226 Difference]: Without dead ends: 3569 [2018-09-18 10:27:18,005 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:27:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2018-09-18 10:27:18,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3518. [2018-09-18 10:27:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3518 states. [2018-09-18 10:27:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 6021 transitions. [2018-09-18 10:27:18,122 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 6021 transitions. Word has length 881 [2018-09-18 10:27:18,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:27:18,125 INFO L480 AbstractCegarLoop]: Abstraction has 3518 states and 6021 transitions. [2018-09-18 10:27:18,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:27:18,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 6021 transitions. [2018-09-18 10:27:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 902 [2018-09-18 10:27:18,151 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:27:18,152 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:27:18,152 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:27:18,153 INFO L82 PathProgramCache]: Analyzing trace with hash 918106781, now seen corresponding path program 1 times [2018-09-18 10:27:18,153 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:27:18,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:27:18,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:27:18,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:27:18,155 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:27:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:27:18,620 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-18 10:27:18,901 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 10:27:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 89 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:27:19,373 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:27:19,373 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 10:27:19,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:27:19,385 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:27:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:27:19,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:27:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:27:20,606 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:27:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:27:21,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:27:21,368 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 10:27:21,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:27:21,384 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:27:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:27:21,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:27:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:27:22,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:27:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:27:23,516 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:27:23,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-09-18 10:27:23,517 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:27:23,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-18 10:27:23,520 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-18 10:27:23,520 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:27:23,521 INFO L87 Difference]: Start difference. First operand 3518 states and 6021 transitions. Second operand 14 states. [2018-09-18 10:27:24,494 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-18 10:28:10,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:28:10,433 INFO L93 Difference]: Finished difference Result 28609 states and 57131 transitions. [2018-09-18 10:28:10,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-18 10:28:10,434 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 901 [2018-09-18 10:28:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:28:10,612 INFO L225 Difference]: With dead ends: 28609 [2018-09-18 10:28:10,612 INFO L226 Difference]: Without dead ends: 25097 [2018-09-18 10:28:10,642 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3715 GetRequests, 3640 SyntacticMatches, 8 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=894, Invalid=3798, Unknown=0, NotChecked=0, Total=4692 [2018-09-18 10:28:10,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25097 states. [2018-09-18 10:28:11,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25097 to 24528. [2018-09-18 10:28:11,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24528 states. [2018-09-18 10:28:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24528 states to 24528 states and 41002 transitions. [2018-09-18 10:28:11,541 INFO L78 Accepts]: Start accepts. Automaton has 24528 states and 41002 transitions. Word has length 901 [2018-09-18 10:28:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:28:11,542 INFO L480 AbstractCegarLoop]: Abstraction has 24528 states and 41002 transitions. [2018-09-18 10:28:11,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-18 10:28:11,542 INFO L276 IsEmpty]: Start isEmpty. Operand 24528 states and 41002 transitions. [2018-09-18 10:28:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-09-18 10:28:11,644 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:28:11,645 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:28:11,645 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:28:11,646 INFO L82 PathProgramCache]: Analyzing trace with hash 569045321, now seen corresponding path program 1 times [2018-09-18 10:28:11,646 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:28:11,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:28:11,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:28:11,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:28:11,647 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:28:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:28:11,989 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:28:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:28:12,746 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:28:12,746 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 10:28:12,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:28:12,765 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:28:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:28:13,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:28:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 10:28:13,954 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:28:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:28:14,458 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:28:14,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:28:14,458 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:28:14,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:28:14,460 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:28:14,460 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:28:14,461 INFO L87 Difference]: Start difference. First operand 24528 states and 41002 transitions. Second operand 5 states. [2018-09-18 10:28:22,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:28:22,406 INFO L93 Difference]: Finished difference Result 74440 states and 132836 transitions. [2018-09-18 10:28:22,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:28:22,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 910 [2018-09-18 10:28:22,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:28:22,639 INFO L225 Difference]: With dead ends: 74440 [2018-09-18 10:28:22,639 INFO L226 Difference]: Without dead ends: 49923 [2018-09-18 10:28:22,742 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1829 GetRequests, 1814 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:28:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49923 states. [2018-09-18 10:28:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49923 to 49611. [2018-09-18 10:28:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49611 states. [2018-09-18 10:28:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49611 states to 49611 states and 77389 transitions. [2018-09-18 10:28:24,173 INFO L78 Accepts]: Start accepts. Automaton has 49611 states and 77389 transitions. Word has length 910 [2018-09-18 10:28:24,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:28:24,174 INFO L480 AbstractCegarLoop]: Abstraction has 49611 states and 77389 transitions. [2018-09-18 10:28:24,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:28:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 49611 states and 77389 transitions. [2018-09-18 10:28:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 934 [2018-09-18 10:28:24,347 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:28:24,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:24,348 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:28:24,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2016750328, now seen corresponding path program 1 times [2018-09-18 10:28:24,349 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:28:24,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:28:24,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:28:24,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:28:24,350 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:28:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:28:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 117 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:28:26,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:28:26,414 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 10:28:26,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:28:26,423 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:28:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:28:26,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:28:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:28:28,476 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:28:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:28:29,600 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:28:29,601 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-18 10:28:29,601 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:28:29,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:28:29,602 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:28:29,602 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:28:29,603 INFO L87 Difference]: Start difference. First operand 49611 states and 77389 transitions. Second operand 3 states. [2018-09-18 10:28:34,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:28:34,633 INFO L93 Difference]: Finished difference Result 98023 states and 153859 transitions. [2018-09-18 10:28:34,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:28:34,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 933 [2018-09-18 10:28:34,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:28:34,809 INFO L225 Difference]: With dead ends: 98023 [2018-09-18 10:28:34,810 INFO L226 Difference]: Without dead ends: 48423 [2018-09-18 10:28:34,902 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1877 GetRequests, 1866 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:28:34,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48423 states. [2018-09-18 10:28:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48423 to 48421. [2018-09-18 10:28:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48421 states. [2018-09-18 10:28:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48421 states to 48421 states and 69710 transitions. [2018-09-18 10:28:35,867 INFO L78 Accepts]: Start accepts. Automaton has 48421 states and 69710 transitions. Word has length 933 [2018-09-18 10:28:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:28:35,869 INFO L480 AbstractCegarLoop]: Abstraction has 48421 states and 69710 transitions. [2018-09-18 10:28:35,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:28:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 48421 states and 69710 transitions. [2018-09-18 10:28:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2018-09-18 10:28:35,984 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:28:35,985 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:35,986 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:28:35,986 INFO L82 PathProgramCache]: Analyzing trace with hash -966766610, now seen corresponding path program 1 times [2018-09-18 10:28:35,986 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:28:35,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:28:35,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:28:35,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:28:35,988 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:28:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:28:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 166 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-18 10:28:36,668 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:28:36,668 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:28:36,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:28:36,678 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:28:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:28:36,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:28:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:28:38,299 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:28:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:28:39,164 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:28:39,165 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:28:39,180 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:28:39,180 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:28:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:28:39,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:28:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:28:41,531 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:28:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:28:42,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:28:42,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 10:28:42,015 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:28:42,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:28:42,017 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:28:42,018 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:28:42,018 INFO L87 Difference]: Start difference. First operand 48421 states and 69710 transitions. Second operand 9 states. [2018-09-18 10:29:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:29:02,079 INFO L93 Difference]: Finished difference Result 183558 states and 310328 transitions. [2018-09-18 10:29:02,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-18 10:29:02,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 963 [2018-09-18 10:29:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:29:02,765 INFO L225 Difference]: With dead ends: 183558 [2018-09-18 10:29:02,765 INFO L226 Difference]: Without dead ends: 135148 [2018-09-18 10:29:02,881 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3908 GetRequests, 3867 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=338, Invalid=1302, Unknown=0, NotChecked=0, Total=1640 [2018-09-18 10:29:02,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135148 states. [2018-09-18 10:29:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135148 to 133544. [2018-09-18 10:29:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133544 states. [2018-09-18 10:29:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133544 states to 133544 states and 192338 transitions. [2018-09-18 10:29:06,060 INFO L78 Accepts]: Start accepts. Automaton has 133544 states and 192338 transitions. Word has length 963 [2018-09-18 10:29:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:29:06,061 INFO L480 AbstractCegarLoop]: Abstraction has 133544 states and 192338 transitions. [2018-09-18 10:29:06,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:29:06,061 INFO L276 IsEmpty]: Start isEmpty. Operand 133544 states and 192338 transitions. [2018-09-18 10:29:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2018-09-18 10:29:07,210 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:29:07,211 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:29:07,211 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:29:07,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1156711403, now seen corresponding path program 1 times [2018-09-18 10:29:07,212 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:29:07,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:29:07,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:29:07,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:29:07,214 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:29:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:29:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 238 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:29:09,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:29:09,492 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:29:09,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:29:09,912 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:29:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:29:10,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:29:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 10:29:10,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:29:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-09-18 10:29:12,021 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:29:12,022 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-18 10:29:12,022 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:29:12,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:29:12,023 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:29:12,023 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:29:12,024 INFO L87 Difference]: Start difference. First operand 133544 states and 192338 transitions. Second operand 3 states. [2018-09-18 10:29:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:29:18,762 INFO L93 Difference]: Finished difference Result 301558 states and 436932 transitions. [2018-09-18 10:29:18,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:29:18,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1056 [2018-09-18 10:29:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:29:19,383 INFO L225 Difference]: With dead ends: 301558 [2018-09-18 10:29:19,383 INFO L226 Difference]: Without dead ends: 168025 [2018-09-18 10:29:19,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2125 GetRequests, 2113 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:29:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168025 states. [2018-09-18 10:29:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168025 to 157132. [2018-09-18 10:29:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157132 states. [2018-09-18 10:29:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157132 states to 157132 states and 211423 transitions. [2018-09-18 10:29:22,931 INFO L78 Accepts]: Start accepts. Automaton has 157132 states and 211423 transitions. Word has length 1056 [2018-09-18 10:29:22,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:29:22,932 INFO L480 AbstractCegarLoop]: Abstraction has 157132 states and 211423 transitions. [2018-09-18 10:29:22,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:29:22,932 INFO L276 IsEmpty]: Start isEmpty. Operand 157132 states and 211423 transitions. [2018-09-18 10:29:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1195 [2018-09-18 10:29:23,160 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:29:23,161 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:29:23,161 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:29:23,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1145271691, now seen corresponding path program 1 times [2018-09-18 10:29:23,161 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:29:23,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:29:23,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:29:23,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:29:23,162 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:29:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:29:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:29:25,219 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:29:25,219 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 10:29:25,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:29:25,228 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:29:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:29:25,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:29:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:29:27,389 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:29:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:29:28,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:29:28,338 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:29:28,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:29:28,354 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:29:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:29:29,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:29:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-18 10:29:29,861 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:29:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-18 10:29:30,977 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 10:29:30,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 17 [2018-09-18 10:29:30,978 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:29:30,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:29:30,980 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:29:30,980 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:29:30,980 INFO L87 Difference]: Start difference. First operand 157132 states and 211423 transitions. Second operand 5 states. [2018-09-18 10:29:39,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:29:39,383 INFO L93 Difference]: Finished difference Result 338222 states and 462080 transitions. [2018-09-18 10:29:39,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:29:39,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1194 [2018-09-18 10:29:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:29:40,306 INFO L225 Difference]: With dead ends: 338222 [2018-09-18 10:29:40,306 INFO L226 Difference]: Without dead ends: 181101 [2018-09-18 10:29:40,453 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4783 GetRequests, 4766 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:29:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181101 states. [2018-09-18 10:29:42,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181101 to 179803. [2018-09-18 10:29:42,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179803 states. [2018-09-18 10:29:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179803 states to 179803 states and 234466 transitions. [2018-09-18 10:29:49,938 INFO L78 Accepts]: Start accepts. Automaton has 179803 states and 234466 transitions. Word has length 1194 [2018-09-18 10:29:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:29:49,939 INFO L480 AbstractCegarLoop]: Abstraction has 179803 states and 234466 transitions. [2018-09-18 10:29:49,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:29:49,939 INFO L276 IsEmpty]: Start isEmpty. Operand 179803 states and 234466 transitions. [2018-09-18 10:29:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1333 [2018-09-18 10:29:50,239 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:29:50,239 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:50,240 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:29:50,240 INFO L82 PathProgramCache]: Analyzing trace with hash 717428325, now seen corresponding path program 1 times [2018-09-18 10:29:50,240 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:29:50,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:29:50,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:29:50,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:29:50,241 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:29:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:29:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 640 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:29:52,157 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:29:52,157 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:29:52,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:29:52,166 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:29:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:29:52,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:29:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 640 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:29:53,338 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:29:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 640 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:29:54,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:29:54,437 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:29:54,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:29:54,453 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:29:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:29:55,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:29:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 517 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-18 10:29:56,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:29:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-18 10:29:57,508 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 10:29:57,509 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 15 [2018-09-18 10:29:57,509 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:29:57,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:29:57,511 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:29:57,511 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:29:57,511 INFO L87 Difference]: Start difference. First operand 179803 states and 234466 transitions. Second operand 5 states. [2018-09-18 10:30:04,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:30:04,711 INFO L93 Difference]: Finished difference Result 360166 states and 471240 transitions. [2018-09-18 10:30:04,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:30:04,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1332 [2018-09-18 10:30:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:30:05,144 INFO L225 Difference]: With dead ends: 360166 [2018-09-18 10:30:05,144 INFO L226 Difference]: Without dead ends: 180374 [2018-09-18 10:30:05,328 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5335 GetRequests, 5318 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:30:05,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180374 states. [2018-09-18 10:30:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180374 to 180321. [2018-09-18 10:30:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180321 states. [2018-09-18 10:30:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180321 states to 180321 states and 220861 transitions. [2018-09-18 10:30:08,304 INFO L78 Accepts]: Start accepts. Automaton has 180321 states and 220861 transitions. Word has length 1332 [2018-09-18 10:30:08,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:30:08,305 INFO L480 AbstractCegarLoop]: Abstraction has 180321 states and 220861 transitions. [2018-09-18 10:30:08,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:30:08,305 INFO L276 IsEmpty]: Start isEmpty. Operand 180321 states and 220861 transitions. [2018-09-18 10:30:08,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1348 [2018-09-18 10:30:08,532 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:30:08,532 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:30:08,533 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:30:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1534612872, now seen corresponding path program 1 times [2018-09-18 10:30:08,533 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:30:08,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:30:08,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:30:08,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:30:08,535 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:30:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:30:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 534 proven. 200 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-18 10:30:10,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:30:10,370 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:30:10,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:30:10,380 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:30:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:30:10,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:30:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 405 proven. 2 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2018-09-18 10:30:12,177 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:30:12,362 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2018-09-18 10:30:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 585 proven. 53 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-09-18 10:30:13,155 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:30:13,156 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:30:13,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:30:13,171 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:30:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:30:14,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:30:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2018-09-18 10:30:14,784 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:30:15,694 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 536 proven. 170 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 10:30:15,697 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 10:30:15,698 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-18 10:30:15,699 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:30:15,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:30:15,700 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:30:15,700 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:30:15,700 INFO L87 Difference]: Start difference. First operand 180321 states and 220861 transitions. Second operand 5 states. Received shutdown request... [2018-09-18 10:30:17,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:30:17,567 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:30:17,573 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:30:17,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:30:17 BoogieIcfgContainer [2018-09-18 10:30:17,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:30:17,574 INFO L168 Benchmark]: Toolchain (without parser) took 214522.68 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 10:30:17,575 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:30:17,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2269.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:30:17,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 144.42 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 10:30:17,577 INFO L168 Benchmark]: Boogie Preprocessor took 621.33 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 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 85.0 MB. Max. memory is 7.1 GB. [2018-09-18 10:30:17,578 INFO L168 Benchmark]: RCFGBuilder took 9530.55 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 202.4 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -198.1 MB). Peak memory consumption was 725.9 MB. Max. memory is 7.1 GB. [2018-09-18 10:30:17,579 INFO L168 Benchmark]: TraceAbstraction took 201950.09 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: -255.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 10:30:17,584 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2269.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 144.42 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 621.33 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 844.6 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 85.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9530.55 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 202.4 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -198.1 MB). Peak memory consumption was 725.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201950.09 ms. Allocated memory was 2.6 GB in the beginning and 5.1 GB in the end (delta: 2.5 GB). Free memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: -255.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4739]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4739). Cancelled while BasicCegarLoop was constructing difference of abstraction (180321states) and FLOYD_HOARE automaton (currently 6 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (11594 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 201.8s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 126.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3987 SDtfs, 33747 SDslu, 2252 SDs, 0 SdLazy, 84259 SolverSat, 27558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28987 GetRequests, 28768 SyntacticMatches, 38 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2230 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180321occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 22.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 14782 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.1s SsaConstructionTime, 6.4s SatisfiabilityAnalysisTime, 33.9s InterpolantComputationTime, 24697 NumberOfCodeBlocks, 24697 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 39034 ConstructedInterpolants, 0 QuantifiedInterpolants, 88373066 SizeOfPredicates, 20 NumberOfNonLiveVariables, 19637 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 36 InterpolantComputations, 11 PerfectInterpolantSequences, 11825/12496 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_label57_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-30-17-598.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label57_true-unreach-call_false-termination.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-30-17-598.csv Completed graceful shutdown