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_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 16:12:33,915 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 16:12:33,918 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 16:12:33,931 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 16:12:33,931 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 16:12:33,933 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 16:12:33,934 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 16:12:33,936 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 16:12:33,938 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 16:12:33,939 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 16:12:33,940 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 16:12:33,940 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 16:12:33,941 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 16:12:33,942 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 16:12:33,944 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 16:12:33,944 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 16:12:33,945 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 16:12:33,947 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 16:12:33,949 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 16:12:33,951 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 16:12:33,952 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 16:12:33,954 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 16:12:33,956 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 16:12:33,956 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 16:12:33,956 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 16:12:33,957 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 16:12:33,959 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 16:12:33,959 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 16:12:33,960 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 16:12:33,961 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 16:12:33,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 16:12:33,962 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 16:12:33,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 16:12:33,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 16:12:33,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 16:12:33,965 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 16:12:33,965 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 16:12:33,993 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 16:12:33,994 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 16:12:33,995 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 16:12:33,995 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 16:12:33,995 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 16:12:33,996 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 16:12:33,996 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 16:12:33,996 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 16:12:33,996 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 16:12:33,997 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 16:12:33,997 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 16:12:33,998 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 16:12:33,998 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 16:12:33,998 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 16:12:33,999 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 16:12:34,000 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 16:12:34,000 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 16:12:34,000 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 16:12:34,000 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 16:12:34,002 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 16:12:34,002 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 16:12:34,002 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 16:12:34,002 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 16:12:34,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:12:34,003 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 16:12:34,003 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 16:12:34,003 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 16:12:34,003 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 16:12:34,004 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 16:12:34,004 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 16:12:34,004 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 16:12:34,004 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 16:12:34,004 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 16:12:34,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 16:12:34,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 16:12:34,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 16:12:34,086 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 16:12:34,087 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 16:12:34,087 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label33_true-unreach-call.c [2018-09-14 16:12:34,474 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2295734a/c16bc8bfaa974654b538594ec82fbc26/FLAGb82e22f43 [2018-09-14 16:12:34,987 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 16:12:34,988 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label33_true-unreach-call.c [2018-09-14 16:12:35,019 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2295734a/c16bc8bfaa974654b538594ec82fbc26/FLAGb82e22f43 [2018-09-14 16:12:35,036 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2295734a/c16bc8bfaa974654b538594ec82fbc26 [2018-09-14 16:12:35,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 16:12:35,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 16:12:35,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 16:12:35,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 16:12:35,058 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 16:12:35,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:12:35" (1/1) ... [2018-09-14 16:12:35,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77af1f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:35, skipping insertion in model container [2018-09-14 16:12:35,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:12:35" (1/1) ... [2018-09-14 16:12:35,075 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 16:12:36,635 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:12:36,654 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 16:12:37,646 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 16:12:37,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37 WrapperNode [2018-09-14 16:12:37,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 16:12:37,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 16:12:37,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 16:12:37,807 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 16:12:37,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... [2018-09-14 16:12:37,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... [2018-09-14 16:12:37,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 16:12:37,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 16:12:37,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 16:12:37,962 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 16:12:38,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... [2018-09-14 16:12:38,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... [2018-09-14 16:12:38,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... [2018-09-14 16:12:38,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... [2018-09-14 16:12:38,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... [2018-09-14 16:12:38,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... [2018-09-14 16:12:38,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... [2018-09-14 16:12:38,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 16:12:38,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 16:12:38,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 16:12:38,544 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 16:12:38,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 16:12:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 16:12:38,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 16:12:38,617 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 16:12:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 16:12:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 16:12:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 16:12:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 16:12:38,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 16:12:38,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 16:12:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 16:12:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 16:12:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 16:12:38,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 16:12:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 16:12:50,307 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 16:12:50,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:12:50 BoogieIcfgContainer [2018-09-14 16:12:50,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 16:12:50,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 16:12:50,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 16:12:50,312 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 16:12:50,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:12:35" (1/3) ... [2018-09-14 16:12:50,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673ae133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:12:50, skipping insertion in model container [2018-09-14 16:12:50,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:12:37" (2/3) ... [2018-09-14 16:12:50,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673ae133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:12:50, skipping insertion in model container [2018-09-14 16:12:50,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:12:50" (3/3) ... [2018-09-14 16:12:50,316 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label33_true-unreach-call.c [2018-09-14 16:12:50,326 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 16:12:50,336 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 16:12:50,398 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 16:12:50,399 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 16:12:50,399 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 16:12:50,399 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 16:12:50,399 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 16:12:50,399 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 16:12:50,400 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 16:12:50,400 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 16:12:50,400 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 16:12:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-14 16:12:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2018-09-14 16:12:50,500 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:12:50,502 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:12:50,504 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:12:50,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1950989921, now seen corresponding path program 1 times [2018-09-14 16:12:50,513 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:12:50,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:50,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:50,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:50,570 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:12:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:12:52,064 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:12:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:12:53,246 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:12:53,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 16:12:53,247 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:12:53,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 16:12:53,265 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 16:12:53,266 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:12:53,268 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-09-14 16:12:59,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:12:59,682 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-09-14 16:12:59,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 16:12:59,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 825 [2018-09-14 16:12:59,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:12:59,750 INFO L225 Difference]: With dead ends: 2647 [2018-09-14 16:12:59,750 INFO L226 Difference]: Without dead ends: 1738 [2018-09-14 16:12:59,767 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 16:12:59,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-09-14 16:12:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-09-14 16:12:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-09-14 16:12:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3121 transitions. [2018-09-14 16:12:59,946 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3121 transitions. Word has length 825 [2018-09-14 16:12:59,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:12:59,951 INFO L480 AbstractCegarLoop]: Abstraction has 1738 states and 3121 transitions. [2018-09-14 16:12:59,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 16:12:59,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3121 transitions. [2018-09-14 16:12:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2018-09-14 16:12:59,992 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:12:59,995 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:12:59,996 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:12:59,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1764999812, now seen corresponding path program 1 times [2018-09-14 16:12:59,997 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:12:59,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:59,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:12:59,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:12:59,999 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:13:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:00,451 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:13:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:13:01,111 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:13:01,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:13:01,112 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:13:01,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:13:01,115 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:13:01,115 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:13:01,115 INFO L87 Difference]: Start difference. First operand 1738 states and 3121 transitions. Second operand 6 states. [2018-09-14 16:13:10,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:13:10,995 INFO L93 Difference]: Finished difference Result 5353 states and 9715 transitions. [2018-09-14 16:13:10,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:13:10,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 884 [2018-09-14 16:13:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:13:11,022 INFO L225 Difference]: With dead ends: 5353 [2018-09-14 16:13:11,022 INFO L226 Difference]: Without dead ends: 3621 [2018-09-14 16:13:11,029 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:13:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2018-09-14 16:13:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3589. [2018-09-14 16:13:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3589 states. [2018-09-14 16:13:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3589 states to 3589 states and 6080 transitions. [2018-09-14 16:13:11,151 INFO L78 Accepts]: Start accepts. Automaton has 3589 states and 6080 transitions. Word has length 884 [2018-09-14 16:13:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:13:11,152 INFO L480 AbstractCegarLoop]: Abstraction has 3589 states and 6080 transitions. [2018-09-14 16:13:11,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:13:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3589 states and 6080 transitions. [2018-09-14 16:13:11,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2018-09-14 16:13:11,172 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:13:11,173 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:13:11,173 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:13:11,173 INFO L82 PathProgramCache]: Analyzing trace with hash 2003050339, now seen corresponding path program 1 times [2018-09-14 16:13:11,174 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:13:11,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:11,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:11,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:11,175 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:13:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:13:12,491 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:13:12,491 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:13:12,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:12,506 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:13:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:12,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:13:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:13:13,619 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:13:14,273 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:13:14,299 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:13:14,299 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 [2018-09-14 16:13:14,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:14,319 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:13:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:14,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:13:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:13:16,235 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:13:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:13:16,878 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:13:16,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 16:13:16,879 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:13:16,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:13:16,882 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:13:16,882 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:13:16,882 INFO L87 Difference]: Start difference. First operand 3589 states and 6080 transitions. Second operand 9 states. [2018-09-14 16:13:33,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:13:33,243 INFO L93 Difference]: Finished difference Result 14737 states and 25721 transitions. [2018-09-14 16:13:33,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-14 16:13:33,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 893 [2018-09-14 16:13:33,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:13:33,332 INFO L225 Difference]: With dead ends: 14737 [2018-09-14 16:13:33,332 INFO L226 Difference]: Without dead ends: 11154 [2018-09-14 16:13:33,356 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3610 GetRequests, 3570 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2018-09-14 16:13:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2018-09-14 16:13:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 11024. [2018-09-14 16:13:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11024 states. [2018-09-14 16:13:33,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11024 states to 11024 states and 16890 transitions. [2018-09-14 16:13:33,803 INFO L78 Accepts]: Start accepts. Automaton has 11024 states and 16890 transitions. Word has length 893 [2018-09-14 16:13:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:13:33,804 INFO L480 AbstractCegarLoop]: Abstraction has 11024 states and 16890 transitions. [2018-09-14 16:13:33,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:13:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 11024 states and 16890 transitions. [2018-09-14 16:13:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2018-09-14 16:13:33,862 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:13:33,863 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:13:33,863 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:13:33,864 INFO L82 PathProgramCache]: Analyzing trace with hash -81287622, now seen corresponding path program 1 times [2018-09-14 16:13:33,864 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:13:33,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:33,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:33,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:33,866 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:13:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:34,280 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:13:34,626 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 16:13:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-14 16:13:35,473 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:13:35,473 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 [2018-09-14 16:13:35,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:35,494 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:13:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:35,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:13:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-14 16:13:36,452 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:13:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-14 16:13:37,091 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 16:13:37,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 16:13:37,092 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:13:37,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 16:13:37,094 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 16:13:37,094 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-09-14 16:13:37,094 INFO L87 Difference]: Start difference. First operand 11024 states and 16890 transitions. Second operand 5 states. [2018-09-14 16:13:44,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:13:44,767 INFO L93 Difference]: Finished difference Result 33474 states and 54793 transitions. [2018-09-14 16:13:44,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:13:44,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 932 [2018-09-14 16:13:44,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:13:44,893 INFO L225 Difference]: With dead ends: 33474 [2018-09-14 16:13:44,893 INFO L226 Difference]: Without dead ends: 22456 [2018-09-14 16:13:44,940 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1873 GetRequests, 1858 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-09-14 16:13:44,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22456 states. [2018-09-14 16:13:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22456 to 22257. [2018-09-14 16:13:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22257 states. [2018-09-14 16:13:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22257 states to 22257 states and 35192 transitions. [2018-09-14 16:13:45,579 INFO L78 Accepts]: Start accepts. Automaton has 22257 states and 35192 transitions. Word has length 932 [2018-09-14 16:13:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:13:45,580 INFO L480 AbstractCegarLoop]: Abstraction has 22257 states and 35192 transitions. [2018-09-14 16:13:45,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 16:13:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 22257 states and 35192 transitions. [2018-09-14 16:13:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2018-09-14 16:13:45,654 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:13:45,655 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:13:45,655 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:13:45,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1727145249, now seen corresponding path program 1 times [2018-09-14 16:13:45,656 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:13:45,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:45,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:45,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:13:45,658 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:13:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:13:47,101 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:13:47,101 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:13:47,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:47,117 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:13:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:47,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:13:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-14 16:13:48,249 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:13:48,978 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:13:49,162 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:13:49,162 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:13:49,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:13:49,182 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:13:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:13:49,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:13:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-14 16:13:50,277 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:13:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 137 proven. 28 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-09-14 16:13:50,763 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:13:50,764 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 16:13:50,764 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:13:50,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:13:50,766 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:13:50,766 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-14 16:13:50,767 INFO L87 Difference]: Start difference. First operand 22257 states and 35192 transitions. Second operand 9 states. [2018-09-14 16:14:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:14:09,374 INFO L93 Difference]: Finished difference Result 67539 states and 127056 transitions. [2018-09-14 16:14:09,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-14 16:14:09,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 950 [2018-09-14 16:14:09,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:14:09,644 INFO L225 Difference]: With dead ends: 67539 [2018-09-14 16:14:09,645 INFO L226 Difference]: Without dead ends: 45288 [2018-09-14 16:14:09,753 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3862 GetRequests, 3818 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=405, Invalid=1575, Unknown=0, NotChecked=0, Total=1980 [2018-09-14 16:14:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45288 states. [2018-09-14 16:14:11,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45288 to 43352. [2018-09-14 16:14:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43352 states. [2018-09-14 16:14:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43352 states to 43352 states and 60220 transitions. [2018-09-14 16:14:11,497 INFO L78 Accepts]: Start accepts. Automaton has 43352 states and 60220 transitions. Word has length 950 [2018-09-14 16:14:11,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:14:11,497 INFO L480 AbstractCegarLoop]: Abstraction has 43352 states and 60220 transitions. [2018-09-14 16:14:11,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:14:11,498 INFO L276 IsEmpty]: Start isEmpty. Operand 43352 states and 60220 transitions. [2018-09-14 16:14:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 983 [2018-09-14 16:14:11,590 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:14:11,591 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:14:11,591 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:14:11,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1866029752, now seen corresponding path program 1 times [2018-09-14 16:14:11,598 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:14:11,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:11,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:11,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:11,600 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:14:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:12,081 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 16:14:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:13,047 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 16:14:13,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 16:14:13,047 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 16:14:13,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 16:14:13,048 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 16:14:13,048 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 16:14:13,049 INFO L87 Difference]: Start difference. First operand 43352 states and 60220 transitions. Second operand 6 states. [2018-09-14 16:14:20,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:14:20,549 INFO L93 Difference]: Finished difference Result 105362 states and 153781 transitions. [2018-09-14 16:14:20,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 16:14:20,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 982 [2018-09-14 16:14:20,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:14:20,749 INFO L225 Difference]: With dead ends: 105362 [2018-09-14 16:14:20,749 INFO L226 Difference]: Without dead ends: 62016 [2018-09-14 16:14:20,827 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 16:14:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62016 states. [2018-09-14 16:14:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62016 to 61834. [2018-09-14 16:14:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61834 states. [2018-09-14 16:14:22,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61834 states to 61834 states and 86641 transitions. [2018-09-14 16:14:22,267 INFO L78 Accepts]: Start accepts. Automaton has 61834 states and 86641 transitions. Word has length 982 [2018-09-14 16:14:22,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:14:22,268 INFO L480 AbstractCegarLoop]: Abstraction has 61834 states and 86641 transitions. [2018-09-14 16:14:22,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 16:14:22,269 INFO L276 IsEmpty]: Start isEmpty. Operand 61834 states and 86641 transitions. [2018-09-14 16:14:22,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2018-09-14 16:14:22,390 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:14:22,391 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 16:14:22,391 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:14:22,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1094280638, now seen corresponding path program 1 times [2018-09-14 16:14:22,392 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:14:22,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:22,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:22,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:22,393 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:14:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 331 proven. 31 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-09-14 16:14:24,045 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:14:24,045 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:14:24,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:24,054 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:14:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:24,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:14:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-09-14 16:14:25,137 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:14:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 331 proven. 31 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-09-14 16:14:25,971 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:14:25,971 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:14:25,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:25,987 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:14:26,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:26,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:14:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-09-14 16:14:27,288 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:14:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 331 proven. 31 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-09-14 16:14:28,053 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:14:28,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-14 16:14:28,054 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:14:28,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 16:14:28,056 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 16:14:28,056 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-09-14 16:14:28,056 INFO L87 Difference]: Start difference. First operand 61834 states and 86641 transitions. Second operand 9 states. [2018-09-14 16:14:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:14:48,965 INFO L93 Difference]: Finished difference Result 217033 states and 320166 transitions. [2018-09-14 16:14:48,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-14 16:14:48,966 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1130 [2018-09-14 16:14:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:14:49,546 INFO L225 Difference]: With dead ends: 217033 [2018-09-14 16:14:49,546 INFO L226 Difference]: Without dead ends: 155205 [2018-09-14 16:14:50,220 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4564 GetRequests, 4528 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2018-09-14 16:14:50,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155205 states. [2018-09-14 16:14:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155205 to 146307. [2018-09-14 16:14:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146307 states. [2018-09-14 16:14:52,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146307 states to 146307 states and 186979 transitions. [2018-09-14 16:14:52,725 INFO L78 Accepts]: Start accepts. Automaton has 146307 states and 186979 transitions. Word has length 1130 [2018-09-14 16:14:52,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 16:14:52,726 INFO L480 AbstractCegarLoop]: Abstraction has 146307 states and 186979 transitions. [2018-09-14 16:14:52,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 16:14:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 146307 states and 186979 transitions. [2018-09-14 16:14:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1574 [2018-09-14 16:14:53,108 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 16:14:53,109 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 16:14:53,110 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 16:14:53,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1397329859, now seen corresponding path program 1 times [2018-09-14 16:14:53,111 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 16:14:53,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:53,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:53,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 16:14:53,112 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 16:14:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:54,572 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-14 16:14:54,929 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-14 16:14:55,183 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-14 16:14:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 734 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:57,462 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:14:57,462 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 16:14:57,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:14:57,470 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:14:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:14:57,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:14:59,783 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 751 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:14:59,783 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:15:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 751 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:15:01,961 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 16:15:01,962 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 16:15:01,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 16:15:01,978 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 16:15:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 16:15:03,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 16:15:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 751 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:15:04,507 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 16:15:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 751 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 16:15:06,560 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 16:15:06,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-09-14 16:15:06,562 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 16:15:06,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 16:15:06,565 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 16:15:06,565 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-14 16:15:06,566 INFO L87 Difference]: Start difference. First operand 146307 states and 186979 transitions. Second operand 14 states. [2018-09-14 16:15:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 16:15:54,850 INFO L93 Difference]: Finished difference Result 498362 states and 674683 transitions. [2018-09-14 16:15:54,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-14 16:15:54,851 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1573 [2018-09-14 16:15:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 16:15:56,712 INFO L225 Difference]: With dead ends: 498362 [2018-09-14 16:15:56,712 INFO L226 Difference]: Without dead ends: 346612 [2018-09-14 16:15:57,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6400 GetRequests, 6317 SyntacticMatches, 20 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=827, Invalid=3333, Unknown=0, NotChecked=0, Total=4160 [2018-09-14 16:15:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346612 states. [2018-09-14 16:16:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346612 to 341511. [2018-09-14 16:16:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341511 states. Received shutdown request... [2018-09-14 16:16:12,400 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 16:16:12,406 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 16:16:12,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 04:16:12 BoogieIcfgContainer [2018-09-14 16:16:12,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 16:16:12,408 INFO L168 Benchmark]: Toolchain (without parser) took 217360.41 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-09-14 16:16:12,409 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 16:16:12,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2754.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-09-14 16:16:12,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 154.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-14 16:16:12,411 INFO L168 Benchmark]: Boogie Preprocessor took 581.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 815.8 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2018-09-14 16:16:12,412 INFO L168 Benchmark]: RCFGBuilder took 11764.92 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 187.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -166.9 MB). Peak memory consumption was 710.9 MB. Max. memory is 7.1 GB. [2018-09-14 16:16:12,420 INFO L168 Benchmark]: TraceAbstraction took 202097.71 ms. Allocated memory was 2.5 GB in the beginning and 5.0 GB in the end (delta: 2.5 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-09-14 16:16:12,429 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2754.87 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 154.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 581.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 815.8 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11764.92 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 187.7 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -166.9 MB). Peak memory consumption was 710.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202097.71 ms. Allocated memory was 2.5 GB in the beginning and 5.0 GB in the end (delta: 2.5 GB). Free memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4793]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4793). Cancelled while ReachableStatesComputation was computing reachable states (107777 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 202.0s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 140.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1506 SDtfs, 51970 SDslu, 3073 SDs, 0 SdLazy, 94443 SolverSat, 32271 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20337 GetRequests, 20097 SyntacticMatches, 34 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2700 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146307occurred in iteration=7, 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: 22.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 11377 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 24.7s InterpolantComputationTime, 18193 NumberOfCodeBlocks, 18193 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 28191 ConstructedInterpolants, 0 QuantifiedInterpolants, 60509828 SizeOfPredicates, 5 NumberOfNonLiveVariables, 14032 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 26 InterpolantComputations, 4 PerfectInterpolantSequences, 8130/8396 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_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_16-16-12-452.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label33_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_16-16-12-452.csv Completed graceful shutdown