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/Problem12_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:25:16,103 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:25:16,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:25:16,118 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:25:16,118 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:25:16,119 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:25:16,120 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:25:16,123 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:25:16,125 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:25:16,126 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:25:16,127 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:25:16,128 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:25:16,135 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:25:16,137 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:25:16,139 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:25:16,140 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:25:16,141 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:25:16,142 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:25:16,144 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:25:16,145 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:25:16,147 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:25:16,148 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:25:16,150 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:25:16,150 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:25:16,150 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:25:16,151 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:25:16,152 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:25:16,153 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:25:16,154 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:25:16,155 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:25:16,155 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:25:16,156 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:25:16,156 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:25:16,156 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:25:16,157 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:25:16,157 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:25:16,158 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:25:16,176 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:25:16,176 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:25:16,177 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:25:16,177 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:25:16,178 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:25:16,178 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:25:16,179 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:25:16,179 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:25:16,179 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:25:16,179 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:25:16,179 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:25:16,180 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:25:16,181 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:25:16,182 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:25:16,182 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:25:16,182 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:25:16,182 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:25:16,182 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:25:16,183 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:25:16,183 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:25:16,183 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:25:16,183 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:25:16,185 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:25:16,185 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:25:16,185 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:25:16,185 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:25:16,186 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:25:16,186 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:25:16,186 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:25:16,186 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:25:16,186 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:25:16,187 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:25:16,187 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:25:16,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:25:16,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:25:16,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:25:16,263 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:25:16,263 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:25:16,264 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label47_true-unreach-call.c [2018-09-14 17:25:16,627 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f6faff3/b15da3bade68436fbff04eb5d8abd285/FLAGc4a804209 [2018-09-14 17:25:17,158 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:25:17,159 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label47_true-unreach-call.c [2018-09-14 17:25:17,195 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f6faff3/b15da3bade68436fbff04eb5d8abd285/FLAGc4a804209 [2018-09-14 17:25:17,217 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0f6faff3/b15da3bade68436fbff04eb5d8abd285 [2018-09-14 17:25:17,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:25:17,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:25:17,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:25:17,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:25:17,243 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:25:17,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:25:17" (1/1) ... [2018-09-14 17:25:17,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bfcf7a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:17, skipping insertion in model container [2018-09-14 17:25:17,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:25:17" (1/1) ... [2018-09-14 17:25:17,262 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:25:18,678 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:25:18,698 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:25:19,263 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:25:19,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19 WrapperNode [2018-09-14 17:25:19,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:25:19,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:25:19,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:25:19,613 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:25:19,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... [2018-09-14 17:25:19,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... [2018-09-14 17:25:19,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:25:19,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:25:19,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:25:19,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:25:20,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... [2018-09-14 17:25:20,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... [2018-09-14 17:25:20,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... [2018-09-14 17:25:20,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... [2018-09-14 17:25:20,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... [2018-09-14 17:25:20,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... [2018-09-14 17:25:20,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... [2018-09-14 17:25:20,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:25:20,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:25:20,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:25:20,954 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:25:20,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:25:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:25:21,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:25:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:25:21,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:25:21,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:25:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:25:21,035 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:25:21,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:25:21,035 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:25:21,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:25:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:25:21,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:25:21,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:25:21,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:25:33,171 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:25:33,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:25:33 BoogieIcfgContainer [2018-09-14 17:25:33,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:25:33,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:25:33,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:25:33,177 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:25:33,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:25:17" (1/3) ... [2018-09-14 17:25:33,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a4fb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:25:33, skipping insertion in model container [2018-09-14 17:25:33,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:25:19" (2/3) ... [2018-09-14 17:25:33,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a4fb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:25:33, skipping insertion in model container [2018-09-14 17:25:33,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:25:33" (3/3) ... [2018-09-14 17:25:33,181 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label47_true-unreach-call.c [2018-09-14 17:25:33,190 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:25:33,200 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:25:33,263 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:25:33,264 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:25:33,264 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:25:33,265 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:25:33,265 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:25:33,265 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:25:33,265 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:25:33,265 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:25:33,266 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:25:33,308 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:25:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-14 17:25:33,323 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:33,324 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] [2018-09-14 17:25:33,325 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:33,330 INFO L82 PathProgramCache]: Analyzing trace with hash 986841587, now seen corresponding path program 1 times [2018-09-14 17:25:33,333 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:33,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:33,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:33,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:33,384 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:25:33,865 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:25:33,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:25:33,866 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:25:33,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:25:33,894 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:25:33,895 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:25:33,899 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-14 17:25:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:43,108 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-14 17:25:43,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:25:43,110 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-09-14 17:25:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:43,148 INFO L225 Difference]: With dead ends: 2446 [2018-09-14 17:25:43,148 INFO L226 Difference]: Without dead ends: 1604 [2018-09-14 17:25:43,161 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:25:43,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-14 17:25:43,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-14 17:25:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:25:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-14 17:25:43,382 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 45 [2018-09-14 17:25:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:43,383 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-14 17:25:43,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:25:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-14 17:25:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-14 17:25:43,395 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:43,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:43,396 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:43,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1872718060, now seen corresponding path program 1 times [2018-09-14 17:25:43,397 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:43,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:43,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:43,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:43,400 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:43,709 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:25:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:25:43,958 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:25:43,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:25:43,958 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:25:43,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:25:43,960 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:25:43,961 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:25:43,961 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-09-14 17:25:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:54,736 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-09-14 17:25:54,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:25:54,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-09-14 17:25:54,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:54,759 INFO L225 Difference]: With dead ends: 4818 [2018-09-14 17:25:54,760 INFO L226 Difference]: Without dead ends: 3220 [2018-09-14 17:25:54,765 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:25:54,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-09-14 17:25:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-09-14 17:25:54,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-09-14 17:25:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-09-14 17:25:54,874 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 119 [2018-09-14 17:25:54,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:54,874 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-09-14 17:25:54,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:25:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-09-14 17:25:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-14 17:25:54,878 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:54,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:54,879 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:54,879 INFO L82 PathProgramCache]: Analyzing trace with hash 715820005, now seen corresponding path program 1 times [2018-09-14 17:25:54,880 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:54,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:54,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:54,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:54,881 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:25:55,298 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:25:55,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:25:55,299 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:25:55,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:25:55,300 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:25:55,300 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:25:55,300 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-09-14 17:26:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:08,837 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-09-14 17:26:08,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:26:08,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-09-14 17:26:08,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:08,898 INFO L225 Difference]: With dead ends: 11148 [2018-09-14 17:26:08,898 INFO L226 Difference]: Without dead ends: 7968 [2018-09-14 17:26:08,919 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:26:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-09-14 17:26:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-09-14 17:26:09,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-09-14 17:26:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-09-14 17:26:09,179 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 124 [2018-09-14 17:26:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:09,181 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-09-14 17:26:09,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:26:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-09-14 17:26:09,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-14 17:26:09,187 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:09,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:26:09,192 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:09,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1322155659, now seen corresponding path program 1 times [2018-09-14 17:26:09,192 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:09,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:09,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:09,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:09,195 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:09,526 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:26:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:26:09,655 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:26:09,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:26:09,655 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:26:09,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:26:09,656 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:26:09,656 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:26:09,656 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-09-14 17:26:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:19,116 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-09-14 17:26:19,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:26:19,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-09-14 17:26:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:19,193 INFO L225 Difference]: With dead ends: 22224 [2018-09-14 17:26:19,194 INFO L226 Difference]: Without dead ends: 14306 [2018-09-14 17:26:19,237 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:26:19,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-09-14 17:26:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-09-14 17:26:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-09-14 17:26:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-09-14 17:26:19,760 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 132 [2018-09-14 17:26:19,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:19,760 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-09-14 17:26:19,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:26:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-09-14 17:26:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-14 17:26:19,764 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:19,765 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:26:19,765 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:19,765 INFO L82 PathProgramCache]: Analyzing trace with hash 822542856, now seen corresponding path program 1 times [2018-09-14 17:26:19,765 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:19,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:19,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:19,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:19,767 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:26:20,236 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:26:20,236 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:26:20,236 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:26:20,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:26:20,237 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:26:20,238 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:26:20,238 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-09-14 17:26:42,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:42,066 INFO L93 Difference]: Finished difference Result 56457 states and 95976 transitions. [2018-09-14 17:26:42,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:26:42,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-09-14 17:26:42,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:42,262 INFO L225 Difference]: With dead ends: 56457 [2018-09-14 17:26:42,262 INFO L226 Difference]: Without dead ends: 42244 [2018-09-14 17:26:42,374 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:26:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42244 states. [2018-09-14 17:26:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42244 to 42002. [2018-09-14 17:26:43,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42002 states. [2018-09-14 17:26:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42002 states to 42002 states and 62979 transitions. [2018-09-14 17:26:43,548 INFO L78 Accepts]: Start accepts. Automaton has 42002 states and 62979 transitions. Word has length 149 [2018-09-14 17:26:43,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:43,549 INFO L480 AbstractCegarLoop]: Abstraction has 42002 states and 62979 transitions. [2018-09-14 17:26:43,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:26:43,550 INFO L276 IsEmpty]: Start isEmpty. Operand 42002 states and 62979 transitions. [2018-09-14 17:26:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-14 17:26:43,555 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:43,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:26:43,556 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:43,556 INFO L82 PathProgramCache]: Analyzing trace with hash -891765791, now seen corresponding path program 1 times [2018-09-14 17:26:43,556 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:43,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:43,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:43,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:43,557 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:43,834 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:26:44,245 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:26:44,245 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:26:44,246 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:26:44,246 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:26:44,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:26:44,247 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:26:44,247 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:26:44,247 INFO L87 Difference]: Start difference. First operand 42002 states and 62979 transitions. Second operand 6 states. [2018-09-14 17:26:57,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:57,140 INFO L93 Difference]: Finished difference Result 104617 states and 165909 transitions. [2018-09-14 17:26:57,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:26:57,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-09-14 17:26:57,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:57,412 INFO L225 Difference]: With dead ends: 104617 [2018-09-14 17:26:57,412 INFO L226 Difference]: Without dead ends: 62621 [2018-09-14 17:26:57,549 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:26:57,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62621 states. [2018-09-14 17:26:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62621 to 62371. [2018-09-14 17:26:59,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62371 states. [2018-09-14 17:26:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62371 states to 62371 states and 87788 transitions. [2018-09-14 17:26:59,449 INFO L78 Accepts]: Start accepts. Automaton has 62371 states and 87788 transitions. Word has length 170 [2018-09-14 17:26:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:59,450 INFO L480 AbstractCegarLoop]: Abstraction has 62371 states and 87788 transitions. [2018-09-14 17:26:59,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:26:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 62371 states and 87788 transitions. [2018-09-14 17:26:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-14 17:26:59,462 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:59,463 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:26:59,463 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:59,463 INFO L82 PathProgramCache]: Analyzing trace with hash -707609888, now seen corresponding path program 1 times [2018-09-14 17:26:59,463 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:59,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:59,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:59,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:59,464 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 76 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:26:59,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:26:59,847 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:26:59,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:59,874 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:26:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:00,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-14 17:27:00,386 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:01,291 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 76 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:27:01,333 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:27:01,334 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-14 17:27:01,334 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:01,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:27:01,336 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:27:01,336 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:27:01,336 INFO L87 Difference]: Start difference. First operand 62371 states and 87788 transitions. Second operand 5 states. [2018-09-14 17:27:13,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:13,104 INFO L93 Difference]: Finished difference Result 181153 states and 270837 transitions. [2018-09-14 17:27:13,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:27:13,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2018-09-14 17:27:13,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:13,765 INFO L225 Difference]: With dead ends: 181153 [2018-09-14 17:27:13,765 INFO L226 Difference]: Without dead ends: 118788 [2018-09-14 17:27:13,956 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:27:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118788 states. [2018-09-14 17:27:16,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118788 to 116023. [2018-09-14 17:27:16,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116023 states. [2018-09-14 17:27:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116023 states to 116023 states and 160991 transitions. [2018-09-14 17:27:17,093 INFO L78 Accepts]: Start accepts. Automaton has 116023 states and 160991 transitions. Word has length 204 [2018-09-14 17:27:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:17,093 INFO L480 AbstractCegarLoop]: Abstraction has 116023 states and 160991 transitions. [2018-09-14 17:27:17,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:27:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 116023 states and 160991 transitions. [2018-09-14 17:27:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-14 17:27:17,100 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:17,101 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:27:17,101 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:17,101 INFO L82 PathProgramCache]: Analyzing trace with hash 296788196, now seen corresponding path program 1 times [2018-09-14 17:27:17,102 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:17,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:17,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:17,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:17,103 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:17,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:17,367 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:27:17,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:17,376 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:17,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:17,703 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:18,736 WARN L178 SmtUtils]: Spent 895.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-14 17:27:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:18,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:18,835 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:27:18,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:18,852 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:19,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:19,134 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:19,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:27:19,279 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:27:19,279 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:27:19,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:27:19,280 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:27:19,280 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:27:19,280 INFO L87 Difference]: Start difference. First operand 116023 states and 160991 transitions. Second operand 9 states. [2018-09-14 17:27:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:38,846 INFO L93 Difference]: Finished difference Result 265820 states and 448283 transitions. [2018-09-14 17:27:38,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-14 17:27:38,846 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 246 [2018-09-14 17:27:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:39,799 INFO L225 Difference]: With dead ends: 265820 [2018-09-14 17:27:39,800 INFO L226 Difference]: Without dead ends: 127433 [2018-09-14 17:27:40,104 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1009 GetRequests, 984 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:27:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127433 states. [2018-09-14 17:27:43,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127433 to 125303. [2018-09-14 17:27:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125303 states. [2018-09-14 17:27:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125303 states to 125303 states and 189854 transitions. [2018-09-14 17:27:44,178 INFO L78 Accepts]: Start accepts. Automaton has 125303 states and 189854 transitions. Word has length 246 [2018-09-14 17:27:44,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:44,178 INFO L480 AbstractCegarLoop]: Abstraction has 125303 states and 189854 transitions. [2018-09-14 17:27:44,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:27:44,179 INFO L276 IsEmpty]: Start isEmpty. Operand 125303 states and 189854 transitions. [2018-09-14 17:27:44,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-09-14 17:27:44,187 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:44,188 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:27:44,188 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:44,189 INFO L82 PathProgramCache]: Analyzing trace with hash 267517201, now seen corresponding path program 1 times [2018-09-14 17:27:44,189 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:44,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:44,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:44,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:44,190 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 70 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:27:45,341 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:45,341 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:27:45,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:45,353 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:45,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-14 17:27:45,511 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-14 17:27:45,720 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:27:45,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-09-14 17:27:45,720 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:27:45,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:27:45,721 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:27:45,721 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:27:45,722 INFO L87 Difference]: Start difference. First operand 125303 states and 189854 transitions. Second operand 3 states. [2018-09-14 17:27:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:53,768 INFO L93 Difference]: Finished difference Result 250525 states and 386541 transitions. [2018-09-14 17:27:53,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:27:53,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-09-14 17:27:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:54,301 INFO L225 Difference]: With dead ends: 250525 [2018-09-14 17:27:54,301 INFO L226 Difference]: Without dead ends: 125233 [2018-09-14 17:27:54,566 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 591 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:27:54,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125233 states. [2018-09-14 17:27:56,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125233 to 123755. [2018-09-14 17:27:56,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123755 states. [2018-09-14 17:28:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123755 states to 123755 states and 177403 transitions. [2018-09-14 17:28:03,017 INFO L78 Accepts]: Start accepts. Automaton has 123755 states and 177403 transitions. Word has length 295 [2018-09-14 17:28:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:03,018 INFO L480 AbstractCegarLoop]: Abstraction has 123755 states and 177403 transitions. [2018-09-14 17:28:03,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:28:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 123755 states and 177403 transitions. [2018-09-14 17:28:03,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-09-14 17:28:03,039 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:03,040 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:28:03,040 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:03,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1029300862, now seen corresponding path program 1 times [2018-09-14 17:28:03,040 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:03,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:03,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:03,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:03,042 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-09-14 17:28:03,306 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:28:03,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:28:03,306 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:03,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:28:03,307 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:28:03,307 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:28:03,308 INFO L87 Difference]: Start difference. First operand 123755 states and 177403 transitions. Second operand 4 states. [2018-09-14 17:28:13,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:13,560 INFO L93 Difference]: Finished difference Result 294182 states and 444609 transitions. [2018-09-14 17:28:13,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:28:13,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2018-09-14 17:28:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:14,316 INFO L225 Difference]: With dead ends: 294182 [2018-09-14 17:28:14,317 INFO L226 Difference]: Without dead ends: 170433 [2018-09-14 17:28:14,594 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:28:14,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170433 states. [2018-09-14 17:28:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170433 to 168129. [2018-09-14 17:28:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168129 states. [2018-09-14 17:28:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168129 states to 168129 states and 246661 transitions. [2018-09-14 17:28:18,096 INFO L78 Accepts]: Start accepts. Automaton has 168129 states and 246661 transitions. Word has length 341 [2018-09-14 17:28:18,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:18,097 INFO L480 AbstractCegarLoop]: Abstraction has 168129 states and 246661 transitions. [2018-09-14 17:28:18,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:28:18,097 INFO L276 IsEmpty]: Start isEmpty. Operand 168129 states and 246661 transitions. [2018-09-14 17:28:18,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-14 17:28:18,112 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:18,113 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:28:18,113 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:18,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1366486417, now seen corresponding path program 1 times [2018-09-14 17:28:18,113 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:18,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:18,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:18,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:18,115 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:18,383 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 120 proven. 143 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-14 17:28:18,384 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:18,384 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 [2018-09-14 17:28:18,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:18,392 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:18,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-14 17:28:18,627 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 196 proven. 71 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 17:28:18,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:18,812 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 [2018-09-14 17:28:18,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:18,828 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:19,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-09-14 17:28:20,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:20,752 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:28:20,859 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:28:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 122 proven. 134 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 17:28:21,182 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 17:28:21,183 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 13 [2018-09-14 17:28:21,183 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:28:21,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:28:21,185 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:28:21,185 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:28:21,185 INFO L87 Difference]: Start difference. First operand 168129 states and 246661 transitions. Second operand 5 states. [2018-09-14 17:28:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:28:31,685 INFO L93 Difference]: Finished difference Result 345083 states and 535032 transitions. [2018-09-14 17:28:31,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:28:31,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2018-09-14 17:28:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:28:32,293 INFO L225 Difference]: With dead ends: 345083 [2018-09-14 17:28:32,293 INFO L226 Difference]: Without dead ends: 176980 [2018-09-14 17:28:32,603 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1376 GetRequests, 1355 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:28:32,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176980 states. [2018-09-14 17:28:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176980 to 176800. [2018-09-14 17:28:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176800 states. [2018-09-14 17:28:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176800 states to 176800 states and 246282 transitions. [2018-09-14 17:28:36,495 INFO L78 Accepts]: Start accepts. Automaton has 176800 states and 246282 transitions. Word has length 342 [2018-09-14 17:28:36,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:28:36,495 INFO L480 AbstractCegarLoop]: Abstraction has 176800 states and 246282 transitions. [2018-09-14 17:28:36,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:28:36,496 INFO L276 IsEmpty]: Start isEmpty. Operand 176800 states and 246282 transitions. [2018-09-14 17:28:36,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-09-14 17:28:36,507 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:28:36,508 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:28:36,508 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:28:36,508 INFO L82 PathProgramCache]: Analyzing trace with hash 53347175, now seen corresponding path program 1 times [2018-09-14 17:28:36,508 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:28:36,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:36,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:36,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:28:36,509 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:28:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:37,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:37,288 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 [2018-09-14 17:28:37,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:37,304 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:37,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:37,522 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:38,700 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:28:38,700 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 [2018-09-14 17:28:38,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:28:38,716 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:28:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:28:38,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:28:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:39,066 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:28:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:28:39,317 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:28:39,318 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:28:39,318 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:28:39,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:28:39,319 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:28:39,320 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:28:39,320 INFO L87 Difference]: Start difference. First operand 176800 states and 246282 transitions. Second operand 9 states. Received shutdown request... [2018-09-14 17:28:56,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:28:56,006 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:28:56,014 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:28:56,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:28:56 BoogieIcfgContainer [2018-09-14 17:28:56,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:28:56,015 INFO L168 Benchmark]: Toolchain (without parser) took 218784.28 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -658.6 MB). Peak memory consumption was 4.3 GB. Max. memory is 7.1 GB. [2018-09-14 17:28:56,016 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:28:56,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2377.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:28:56,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 309.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:28:56,018 INFO L168 Benchmark]: Boogie Preprocessor took 1030.58 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 887.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:28:56,019 INFO L168 Benchmark]: RCFGBuilder took 12218.33 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 652.9 MB). Peak memory consumption was 652.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:28:56,020 INFO L168 Benchmark]: TraceAbstraction took 202841.08 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -441.0 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-09-14 17:28:56,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2377.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 309.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1030.58 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 887.6 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12218.33 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 652.9 MB). Peak memory consumption was 652.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202841.08 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -441.0 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (176800states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (396496 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 202.7s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 160.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3206 SDtfs, 37592 SDslu, 2124 SDs, 0 SdLazy, 71745 SolverSat, 15246 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 111.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5015 GetRequests, 4884 SyntacticMatches, 27 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176800occurred in iteration=11, 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: 27.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 9514 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 4997 NumberOfCodeBlocks, 4997 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 7414 ConstructedInterpolants, 0 QuantifiedInterpolants, 6629530 SizeOfPredicates, 7 NumberOfNonLiveVariables, 4220 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 28 InterpolantComputations, 11 PerfectInterpolantSequences, 4471/5099 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/Problem12_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-28-56-046.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-28-56-046.csv Completed graceful shutdown