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_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:20:51,779 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:20:51,783 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:20:51,796 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:20:51,796 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:20:51,798 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:20:51,799 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:20:51,801 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:20:51,802 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:20:51,803 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:20:51,804 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:20:51,804 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:20:51,805 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:20:51,806 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:20:51,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:20:51,812 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:20:51,813 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:20:51,814 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:20:51,820 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:20:51,824 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:20:51,826 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:20:51,830 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:20:51,835 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:20:51,836 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:20:51,836 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:20:51,837 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:20:51,838 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:20:51,841 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:20:51,843 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:20:51,845 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:20:51,845 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:20:51,845 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:20:51,846 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:20:51,846 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:20:51,847 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:20:51,848 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:20:51,848 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 10:20:51,863 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:20:51,863 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:20:51,864 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:20:51,864 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:20:51,864 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:20:51,865 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:20:51,865 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:20:51,865 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:20:51,865 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:20:51,865 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:20:51,866 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:20:51,866 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:20:51,867 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:20:51,867 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:20:51,867 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:20:51,867 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:20:51,867 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:20:51,868 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:20:51,868 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:20:51,868 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:20:51,868 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:20:51,868 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:20:51,869 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:20:51,869 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:20:51,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:20:51,869 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:20:51,869 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:20:51,869 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:20:51,870 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:20:51,870 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:20:51,870 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:20:51,870 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:20:51,870 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:20:51,871 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:20:51,928 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:20:51,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:20:51,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:20:51,954 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:20:51,955 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:20:51,955 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label21_true-unreach-call.c [2018-09-18 10:20:52,330 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8317c382/3f7065ab76474a3b818ab2e3b0dbc5db/FLAGf1e062cf0 [2018-09-18 10:20:52,855 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:20:52,856 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label21_true-unreach-call.c [2018-09-18 10:20:52,900 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8317c382/3f7065ab76474a3b818ab2e3b0dbc5db/FLAGf1e062cf0 [2018-09-18 10:20:52,917 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8317c382/3f7065ab76474a3b818ab2e3b0dbc5db [2018-09-18 10:20:52,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:20:52,933 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:20:52,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:20:52,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:20:52,942 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:20:52,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:20:52" (1/1) ... [2018-09-18 10:20:52,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad3ee8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:52, skipping insertion in model container [2018-09-18 10:20:52,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:20:52" (1/1) ... [2018-09-18 10:20:52,961 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:20:54,259 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:20:54,284 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:20:55,051 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:20:55,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55 WrapperNode [2018-09-18 10:20:55,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:20:55,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:20:55,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:20:55,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:20:55,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... [2018-09-18 10:20:55,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... [2018-09-18 10:20:55,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:20:55,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:20:55,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:20:55,375 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:20:55,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... [2018-09-18 10:20:55,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... [2018-09-18 10:20:55,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... [2018-09-18 10:20:55,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... [2018-09-18 10:20:55,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... [2018-09-18 10:20:55,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... [2018-09-18 10:20:55,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... [2018-09-18 10:20:56,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:20:56,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:20:56,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:20:56,007 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:20:56,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:20:56,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:20:56,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:20:56,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 10:20:56,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 10:20:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 10:20:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 10:20:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 10:20:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 10:20:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:20:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:20:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:20:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:20:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:20:56,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:21:06,380 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:21:06,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:21:06 BoogieIcfgContainer [2018-09-18 10:21:06,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:21:06,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:21:06,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:21:06,385 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:21:06,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:20:52" (1/3) ... [2018-09-18 10:21:06,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d97ff9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:21:06, skipping insertion in model container [2018-09-18 10:21:06,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:20:55" (2/3) ... [2018-09-18 10:21:06,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d97ff9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:21:06, skipping insertion in model container [2018-09-18 10:21:06,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:21:06" (3/3) ... [2018-09-18 10:21:06,389 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label21_true-unreach-call.c [2018-09-18 10:21:06,401 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:21:06,413 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:21:06,482 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:21:06,483 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:21:06,483 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:21:06,483 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:21:06,484 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:21:06,484 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:21:06,484 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:21:06,484 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:21:06,484 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:21:06,529 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-09-18 10:21:06,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2018-09-18 10:21:06,584 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:21:06,586 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] [2018-09-18 10:21:06,587 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:21:06,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1849996705, now seen corresponding path program 1 times [2018-09-18 10:21:06,597 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:21:06,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:06,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:06,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:06,657 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:21:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:08,198 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-09-18 10:21:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:21:09,306 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:21:09,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 10:21:09,306 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:21:09,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 10:21:09,329 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 10:21:09,330 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:21:09,332 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 4 states. [2018-09-18 10:21:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:21:19,027 INFO L93 Difference]: Finished difference Result 3486 states and 6774 transitions. [2018-09-18 10:21:19,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 10:21:19,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 809 [2018-09-18 10:21:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:21:19,089 INFO L225 Difference]: With dead ends: 3486 [2018-09-18 10:21:19,090 INFO L226 Difference]: Without dead ends: 2573 [2018-09-18 10:21:19,100 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:21:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2018-09-18 10:21:19,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2573. [2018-09-18 10:21:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2573 states. [2018-09-18 10:21:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 4899 transitions. [2018-09-18 10:21:19,337 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 4899 transitions. Word has length 809 [2018-09-18 10:21:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:21:19,341 INFO L480 AbstractCegarLoop]: Abstraction has 2573 states and 4899 transitions. [2018-09-18 10:21:19,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 10:21:19,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 4899 transitions. [2018-09-18 10:21:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2018-09-18 10:21:19,379 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:21:19,380 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:21:19,380 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:21:19,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1887796664, now seen corresponding path program 1 times [2018-09-18 10:21:19,381 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:21:19,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:19,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:19,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:19,383 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:21:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:19,826 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:21:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:21:20,462 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:21:20,463 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:21:20,463 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:21:20,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:21:20,467 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:21:20,467 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:21:20,468 INFO L87 Difference]: Start difference. First operand 2573 states and 4899 transitions. Second operand 6 states. [2018-09-18 10:21:29,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:21:29,380 INFO L93 Difference]: Finished difference Result 6136 states and 11680 transitions. [2018-09-18 10:21:29,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:21:29,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 883 [2018-09-18 10:21:29,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:21:29,404 INFO L225 Difference]: With dead ends: 6136 [2018-09-18 10:21:29,404 INFO L226 Difference]: Without dead ends: 3569 [2018-09-18 10:21:29,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:21:29,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2018-09-18 10:21:29,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3518. [2018-09-18 10:21:29,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3518 states. [2018-09-18 10:21:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 6021 transitions. [2018-09-18 10:21:29,528 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 6021 transitions. Word has length 883 [2018-09-18 10:21:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:21:29,530 INFO L480 AbstractCegarLoop]: Abstraction has 3518 states and 6021 transitions. [2018-09-18 10:21:29,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:21:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 6021 transitions. [2018-09-18 10:21:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2018-09-18 10:21:29,555 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:21:29,556 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:21:29,556 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:21:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1832471557, now seen corresponding path program 1 times [2018-09-18 10:21:29,557 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:21:29,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:29,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:29,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:21:29,558 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:21:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:29,974 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-18 10:21:30,334 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 10:21:30,568 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-18 10:21:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 89 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:21:31,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:21:31,173 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:21:31,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:31,187 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:21:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:31,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:21:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:21:32,219 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:21:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:21:33,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:21:33,335 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:21:33,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:21:33,352 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:21:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:21:33,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:21:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:21:34,906 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:21:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:21:35,516 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:21:35,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 18 [2018-09-18 10:21:35,517 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:21:35,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-18 10:21:35,520 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-18 10:21:35,521 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:21:35,521 INFO L87 Difference]: Start difference. First operand 3518 states and 6021 transitions. Second operand 14 states. [2018-09-18 10:22:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:22:22,785 INFO L93 Difference]: Finished difference Result 28609 states and 57131 transitions. [2018-09-18 10:22:22,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-18 10:22:22,785 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 903 [2018-09-18 10:22:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:22:23,008 INFO L225 Difference]: With dead ends: 28609 [2018-09-18 10:22:23,009 INFO L226 Difference]: Without dead ends: 25097 [2018-09-18 10:22:23,040 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3723 GetRequests, 3648 SyntacticMatches, 8 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=894, Invalid=3798, Unknown=0, NotChecked=0, Total=4692 [2018-09-18 10:22:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25097 states. [2018-09-18 10:22:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25097 to 24528. [2018-09-18 10:22:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24528 states. [2018-09-18 10:22:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24528 states to 24528 states and 41002 transitions. [2018-09-18 10:22:23,930 INFO L78 Accepts]: Start accepts. Automaton has 24528 states and 41002 transitions. Word has length 903 [2018-09-18 10:22:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:22:23,931 INFO L480 AbstractCegarLoop]: Abstraction has 24528 states and 41002 transitions. [2018-09-18 10:22:23,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-18 10:22:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 24528 states and 41002 transitions. [2018-09-18 10:22:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2018-09-18 10:22:24,050 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:22:24,051 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:22:24,051 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:22:24,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1391857585, now seen corresponding path program 1 times [2018-09-18 10:22:24,052 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:22:24,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:24,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:24,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:24,054 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:22:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:24,445 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:22:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:22:25,197 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:25,197 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:22:25,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:25,219 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:25,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 10:22:26,529 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:22:27,054 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:22:27,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:22:27,055 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:22:27,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:22:27,056 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:22:27,057 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:22:27,057 INFO L87 Difference]: Start difference. First operand 24528 states and 41002 transitions. Second operand 5 states. [2018-09-18 10:22:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:22:35,698 INFO L93 Difference]: Finished difference Result 74439 states and 132810 transitions. [2018-09-18 10:22:35,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:22:35,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 912 [2018-09-18 10:22:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:22:35,953 INFO L225 Difference]: With dead ends: 74439 [2018-09-18 10:22:35,953 INFO L226 Difference]: Without dead ends: 49922 [2018-09-18 10:22:36,063 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1833 GetRequests, 1818 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:22:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49922 states. [2018-09-18 10:22:37,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49922 to 49612. [2018-09-18 10:22:37,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49612 states. [2018-09-18 10:22:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49612 states to 49612 states and 77390 transitions. [2018-09-18 10:22:37,390 INFO L78 Accepts]: Start accepts. Automaton has 49612 states and 77390 transitions. Word has length 912 [2018-09-18 10:22:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:22:37,390 INFO L480 AbstractCegarLoop]: Abstraction has 49612 states and 77390 transitions. [2018-09-18 10:22:37,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:22:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 49612 states and 77390 transitions. [2018-09-18 10:22:37,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2018-09-18 10:22:37,572 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:22:37,572 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:22:37,573 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:22:37,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1066664016, now seen corresponding path program 1 times [2018-09-18 10:22:37,573 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:22:37,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:37,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:37,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:37,576 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:22:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:38,619 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:22:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-18 10:22:39,898 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:39,898 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:22:39,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:39,911 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:40,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:22:41,252 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:22:42,064 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:22:42,064 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-09-18 10:22:42,065 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:22:42,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:22:42,066 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:22:42,066 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-18 10:22:42,067 INFO L87 Difference]: Start difference. First operand 49612 states and 77390 transitions. Second operand 3 states. [2018-09-18 10:22:47,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:22:47,922 INFO L93 Difference]: Finished difference Result 128075 states and 203229 transitions. [2018-09-18 10:22:47,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:22:47,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 935 [2018-09-18 10:22:47,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:22:48,282 INFO L225 Difference]: With dead ends: 128075 [2018-09-18 10:22:48,283 INFO L226 Difference]: Without dead ends: 78474 [2018-09-18 10:22:48,419 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1880 GetRequests, 1866 SyntacticMatches, 11 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-18 10:22:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78474 states. [2018-09-18 10:22:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78474 to 78472. [2018-09-18 10:22:49,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78472 states. [2018-09-18 10:22:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78472 states to 78472 states and 117605 transitions. [2018-09-18 10:22:50,047 INFO L78 Accepts]: Start accepts. Automaton has 78472 states and 117605 transitions. Word has length 935 [2018-09-18 10:22:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:22:50,049 INFO L480 AbstractCegarLoop]: Abstraction has 78472 states and 117605 transitions. [2018-09-18 10:22:50,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:22:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 78472 states and 117605 transitions. [2018-09-18 10:22:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2018-09-18 10:22:50,290 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:22:50,291 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:22:50,292 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:22:50,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1554987382, now seen corresponding path program 1 times [2018-09-18 10:22:50,292 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:22:50,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:50,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:50,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:22:50,294 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:22:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 214 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-18 10:22:51,585 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:51,585 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:22:51,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:51,593 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:51,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:22:52,356 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:22:53,325 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:22:53,325 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:22:53,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:22:53,342 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:22:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:22:54,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:22:54,741 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:22:54,741 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:22:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 232 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-09-18 10:22:55,698 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:22:55,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 10:22:55,699 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:22:55,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:22:55,701 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:22:55,702 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2018-09-18 10:22:55,702 INFO L87 Difference]: Start difference. First operand 78472 states and 117605 transitions. Second operand 9 states. [2018-09-18 10:23:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:23:11,864 INFO L93 Difference]: Finished difference Result 237562 states and 390199 transitions. [2018-09-18 10:23:11,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-18 10:23:11,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1013 [2018-09-18 10:23:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:23:12,585 INFO L225 Difference]: With dead ends: 237562 [2018-09-18 10:23:12,585 INFO L226 Difference]: Without dead ends: 159101 [2018-09-18 10:23:12,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4098 GetRequests, 4062 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=231, Invalid=1101, Unknown=0, NotChecked=0, Total=1332 [2018-09-18 10:23:12,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159101 states. [2018-09-18 10:23:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159101 to 157689. [2018-09-18 10:23:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157689 states. [2018-09-18 10:23:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157689 states to 157689 states and 222598 transitions. [2018-09-18 10:23:16,587 INFO L78 Accepts]: Start accepts. Automaton has 157689 states and 222598 transitions. Word has length 1013 [2018-09-18 10:23:16,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:23:16,588 INFO L480 AbstractCegarLoop]: Abstraction has 157689 states and 222598 transitions. [2018-09-18 10:23:16,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:23:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 157689 states and 222598 transitions. [2018-09-18 10:23:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1161 [2018-09-18 10:23:16,884 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:16,885 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:23:16,885 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:16,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1708168628, now seen corresponding path program 1 times [2018-09-18 10:23:16,886 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:16,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:16,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:16,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:16,887 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:17,363 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:23:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 348 proven. 247 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-18 10:23:19,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:19,230 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:23:19,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:19,238 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:19,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 450 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-09-18 10:23:20,987 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 414 proven. 68 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-09-18 10:23:21,606 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:21,606 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:23:21,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:21,622 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:22,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 450 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-09-18 10:23:23,420 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:24,450 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 414 proven. 68 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-09-18 10:23:24,453 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:23:24,454 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-18 10:23:24,454 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:23:24,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:23:24,456 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:23:24,456 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:23:24,456 INFO L87 Difference]: Start difference. First operand 157689 states and 222598 transitions. Second operand 9 states. [2018-09-18 10:23:39,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:23:39,615 INFO L93 Difference]: Finished difference Result 330297 states and 484729 transitions. [2018-09-18 10:23:39,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-18 10:23:39,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1160 [2018-09-18 10:23:39,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:23:40,206 INFO L225 Difference]: With dead ends: 330297 [2018-09-18 10:23:40,206 INFO L226 Difference]: Without dead ends: 173449 [2018-09-18 10:23:40,448 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4681 GetRequests, 4646 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=229, Invalid=893, Unknown=0, NotChecked=0, Total=1122 [2018-09-18 10:23:40,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173449 states. [2018-09-18 10:23:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173449 to 172038. [2018-09-18 10:23:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172038 states. [2018-09-18 10:23:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172038 states to 172038 states and 223989 transitions. [2018-09-18 10:23:43,489 INFO L78 Accepts]: Start accepts. Automaton has 172038 states and 223989 transitions. Word has length 1160 [2018-09-18 10:23:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:23:43,490 INFO L480 AbstractCegarLoop]: Abstraction has 172038 states and 223989 transitions. [2018-09-18 10:23:43,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:23:43,490 INFO L276 IsEmpty]: Start isEmpty. Operand 172038 states and 223989 transitions. [2018-09-18 10:23:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1358 [2018-09-18 10:23:43,778 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:23:43,778 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:23:43,779 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:23:43,779 INFO L82 PathProgramCache]: Analyzing trace with hash 871005531, now seen corresponding path program 1 times [2018-09-18 10:23:43,779 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:23:43,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:43,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:43,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:23:43,780 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:23:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 568 proven. 174 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-18 10:23:46,610 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:46,610 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:23:51,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:51,015 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:51,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2018-09-18 10:23:52,462 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 603 proven. 31 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-09-18 10:23:53,104 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:23:53,104 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:23:53,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:23:53,124 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:23:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:23:54,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:23:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 460 proven. 2 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2018-09-18 10:23:54,649 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:23:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 603 proven. 31 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-09-18 10:23:55,424 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:23:55,426 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17 [2018-09-18 10:23:55,426 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:23:55,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:23:55,428 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:23:55,428 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:23:55,428 INFO L87 Difference]: Start difference. First operand 172038 states and 223989 transitions. Second operand 9 states. [2018-09-18 10:24:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:24:11,804 INFO L93 Difference]: Finished difference Result 475662 states and 647365 transitions. [2018-09-18 10:24:11,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-18 10:24:11,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1357 [2018-09-18 10:24:11,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:24:12,526 INFO L225 Difference]: With dead ends: 475662 [2018-09-18 10:24:12,526 INFO L226 Difference]: Without dead ends: 290224 [2018-09-18 10:24:12,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5469 GetRequests, 5434 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=1010, Unknown=0, NotChecked=0, Total=1260 [2018-09-18 10:24:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290224 states. [2018-09-18 10:24:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290224 to 288444. [2018-09-18 10:24:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288444 states. [2018-09-18 10:24:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288444 states to 288444 states and 323519 transitions. [2018-09-18 10:24:17,001 INFO L78 Accepts]: Start accepts. Automaton has 288444 states and 323519 transitions. Word has length 1357 [2018-09-18 10:24:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:24:17,002 INFO L480 AbstractCegarLoop]: Abstraction has 288444 states and 323519 transitions. [2018-09-18 10:24:17,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:24:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 288444 states and 323519 transitions. [2018-09-18 10:24:17,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1480 [2018-09-18 10:24:17,224 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:24:17,225 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 10:24:17,225 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:24:17,226 INFO L82 PathProgramCache]: Analyzing trace with hash -579795404, now seen corresponding path program 1 times [2018-09-18 10:24:17,226 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:24:17,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:17,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:17,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:24:17,227 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:24:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 798 proven. 653 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-09-18 10:24:20,940 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:20,940 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:24:20,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:20,948 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:21,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 1296 proven. 2 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2018-09-18 10:24:22,197 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 925 proven. 221 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2018-09-18 10:24:23,313 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:24:23,313 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:24:23,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:24:23,329 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:24:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:24:24,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:24:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 1296 proven. 2 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2018-09-18 10:24:25,102 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:24:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1708 backedges. 925 proven. 221 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2018-09-18 10:24:26,122 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:24:26,124 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 15 [2018-09-18 10:24:26,124 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:24:26,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 10:24:26,127 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 10:24:26,127 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:24:26,128 INFO L87 Difference]: Start difference. First operand 288444 states and 323519 transitions. Second operand 13 states. Received shutdown request... [2018-09-18 10:24:30,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-18 10:24:30,348 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:24:30,353 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:24:30,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:24:30 BoogieIcfgContainer [2018-09-18 10:24:30,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:24:30,355 INFO L168 Benchmark]: Toolchain (without parser) took 217424.22 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -501.4 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-18 10:24:30,356 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:24:30,356 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2270.87 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: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2018-09-18 10:24:30,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 167.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:24:30,358 INFO L168 Benchmark]: Boogie Preprocessor took 631.82 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. [2018-09-18 10:24:30,359 INFO L168 Benchmark]: RCFGBuilder took 10374.21 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 192.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -172.1 MB). Peak memory consumption was 716.9 MB. Max. memory is 7.1 GB. [2018-09-18 10:24:30,360 INFO L168 Benchmark]: TraceAbstraction took 203972.34 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 534.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-18 10:24:30,365 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2270.87 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: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 167.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 631.82 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 84.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10374.21 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 192.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -172.1 MB). Peak memory consumption was 716.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203972.34 ms. Allocated memory was 2.6 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 534.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4745]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4745). Cancelled while BasicCegarLoop was constructing difference of abstraction (288444states) and FLOYD_HOARE automaton (currently 14 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (3861 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 203.8s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 136.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1762 SDtfs, 56719 SDslu, 2699 SDs, 0 SdLazy, 83779 SolverSat, 38704 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27647 GetRequests, 27400 SyntacticMatches, 33 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2492 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288444occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 15.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 5535 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 28.6s InterpolantComputationTime, 23122 NumberOfCodeBlocks, 23122 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 36760 ConstructedInterpolants, 0 QuantifiedInterpolants, 68066953 SizeOfPredicates, 13 NumberOfNonLiveVariables, 19020 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 33 InterpolantComputations, 5 PerfectInterpolantSequences, 16340/18283 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_label21_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-24-30-379.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label21_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-24-30-379.csv Completed graceful shutdown