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/Problem16_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:56:16,032 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:56:16,040 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:56:16,057 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:56:16,057 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:56:16,059 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:56:16,060 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:56:16,063 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:56:16,065 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:56:16,068 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:56:16,069 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:56:16,069 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:56:16,070 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:56:16,073 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:56:16,076 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:56:16,083 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:56:16,084 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:56:16,088 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:56:16,091 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:56:16,093 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:56:16,094 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:56:16,095 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:56:16,097 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:56:16,097 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:56:16,097 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:56:16,099 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:56:16,100 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:56:16,101 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:56:16,102 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:56:16,104 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:56:16,104 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:56:16,106 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:56:16,106 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:56:16,106 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:56:16,107 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:56:16,110 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:56:16,110 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 17:56:16,136 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:56:16,136 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:56:16,137 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:56:16,138 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:56:16,138 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:56:16,138 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:56:16,138 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:56:16,138 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:56:16,139 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:56:16,139 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:56:16,139 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:56:16,140 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:56:16,140 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:56:16,140 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:56:16,140 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:56:16,140 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:56:16,141 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:56:16,141 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:56:16,141 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:56:16,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:56:16,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:56:16,142 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:56:16,142 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:56:16,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:56:16,142 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:56:16,142 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:56:16,142 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:56:16,143 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:56:16,143 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:56:16,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:56:16,143 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:56:16,143 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:56:16,144 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:56:16,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:56:16,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:56:16,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:56:16,208 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:56:16,209 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:56:16,209 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-09-14 17:56:16,558 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44237f02/6c8082b56a684b61b983ef24246d3e57/FLAGd528f369d [2018-09-14 17:56:16,899 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:56:16,900 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-09-14 17:56:16,920 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44237f02/6c8082b56a684b61b983ef24246d3e57/FLAGd528f369d [2018-09-14 17:56:16,940 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e44237f02/6c8082b56a684b61b983ef24246d3e57 [2018-09-14 17:56:16,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:56:16,957 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:56:16,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:56:16,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:56:16,964 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:56:16,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:56:16" (1/1) ... [2018-09-14 17:56:16,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1ebdbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:16, skipping insertion in model container [2018-09-14 17:56:16,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:56:16" (1/1) ... [2018-09-14 17:56:16,979 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:56:17,692 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:56:17,714 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:56:17,936 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:56:18,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18 WrapperNode [2018-09-14 17:56:18,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:56:18,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:56:18,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:56:18,042 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:56:18,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (1/1) ... [2018-09-14 17:56:18,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (1/1) ... [2018-09-14 17:56:18,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:56:18,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:56:18,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:56:18,203 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:56:18,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (1/1) ... [2018-09-14 17:56:18,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (1/1) ... [2018-09-14 17:56:18,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (1/1) ... [2018-09-14 17:56:18,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (1/1) ... [2018-09-14 17:56:18,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (1/1) ... [2018-09-14 17:56:18,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (1/1) ... [2018-09-14 17:56:18,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (1/1) ... [2018-09-14 17:56:18,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:56:18,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:56:18,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:56:18,679 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:56:18,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (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 17:56:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:56:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:56:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:56:18,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:56:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:56:18,757 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:56:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:56:18,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:56:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:56:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:56:25,243 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:56:25,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:56:25 BoogieIcfgContainer [2018-09-14 17:56:25,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:56:25,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:56:25,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:56:25,248 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:56:25,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:56:16" (1/3) ... [2018-09-14 17:56:25,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b364ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:56:25, skipping insertion in model container [2018-09-14 17:56:25,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:56:18" (2/3) ... [2018-09-14 17:56:25,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b364ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:56:25, skipping insertion in model container [2018-09-14 17:56:25,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:56:25" (3/3) ... [2018-09-14 17:56:25,253 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label45_true-unreach-call.c [2018-09-14 17:56:25,263 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:56:25,272 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:56:25,333 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:56:25,334 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:56:25,334 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:56:25,334 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:56:25,335 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:56:25,335 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:56:25,335 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:56:25,335 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:56:25,335 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:56:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-14 17:56:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-14 17:56:25,390 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:25,391 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:56:25,392 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:25,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1570242596, now seen corresponding path program 1 times [2018-09-14 17:56:25,401 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:25,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:25,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:25,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:25,454 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:25,976 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 17:56:25,979 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:56:25,980 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:56:25,980 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:25,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:56:26,004 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:56:26,005 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:56:26,008 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-09-14 17:56:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:56:32,231 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-09-14 17:56:32,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:56:32,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-09-14 17:56:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:56:32,266 INFO L225 Difference]: With dead ends: 1513 [2018-09-14 17:56:32,266 INFO L226 Difference]: Without dead ends: 1097 [2018-09-14 17:56:32,276 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:56:32,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-09-14 17:56:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-09-14 17:56:32,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-14 17:56:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1301 transitions. [2018-09-14 17:56:32,483 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1301 transitions. Word has length 60 [2018-09-14 17:56:32,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:56:32,485 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1301 transitions. [2018-09-14 17:56:32,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:56:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1301 transitions. [2018-09-14 17:56:32,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-14 17:56:32,498 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:32,499 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 17:56:32,499 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:32,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1372196061, now seen corresponding path program 1 times [2018-09-14 17:56:32,499 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:32,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:32,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:32,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:32,503 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:33,189 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:56:33,190 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:56:33,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:56:33,190 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:33,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:56:33,192 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:56:33,193 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:56:33,193 INFO L87 Difference]: Start difference. First operand 744 states and 1301 transitions. Second operand 6 states. [2018-09-14 17:56:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:56:38,489 INFO L93 Difference]: Finished difference Result 2196 states and 3924 transitions. [2018-09-14 17:56:38,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:56:38,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-09-14 17:56:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:56:38,503 INFO L225 Difference]: With dead ends: 2196 [2018-09-14 17:56:38,504 INFO L226 Difference]: Without dead ends: 1458 [2018-09-14 17:56:38,507 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:56:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-09-14 17:56:38,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-09-14 17:56:38,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-09-14 17:56:38,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2463 transitions. [2018-09-14 17:56:38,572 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2463 transitions. Word has length 131 [2018-09-14 17:56:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:56:38,573 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2463 transitions. [2018-09-14 17:56:38,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:56:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2463 transitions. [2018-09-14 17:56:38,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-14 17:56:38,577 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:38,578 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 17:56:38,578 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:38,578 INFO L82 PathProgramCache]: Analyzing trace with hash 822565126, now seen corresponding path program 1 times [2018-09-14 17:56:38,578 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:38,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:38,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:38,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:38,580 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:56:38,815 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:56:38,815 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:56:38,815 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:38,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:56:38,816 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:56:38,816 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:56:38,817 INFO L87 Difference]: Start difference. First operand 1438 states and 2463 transitions. Second operand 5 states. [2018-09-14 17:56:43,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:56:43,274 INFO L93 Difference]: Finished difference Result 3597 states and 6200 transitions. [2018-09-14 17:56:43,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:56:43,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-09-14 17:56:43,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:56:43,291 INFO L225 Difference]: With dead ends: 3597 [2018-09-14 17:56:43,291 INFO L226 Difference]: Without dead ends: 2165 [2018-09-14 17:56:43,298 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:56:43,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2018-09-14 17:56:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2145. [2018-09-14 17:56:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-09-14 17:56:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3126 transitions. [2018-09-14 17:56:43,379 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3126 transitions. Word has length 132 [2018-09-14 17:56:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:56:43,380 INFO L480 AbstractCegarLoop]: Abstraction has 2145 states and 3126 transitions. [2018-09-14 17:56:43,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:56:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3126 transitions. [2018-09-14 17:56:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-14 17:56:43,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:43,385 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:56:43,385 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:43,386 INFO L82 PathProgramCache]: Analyzing trace with hash 9848590, now seen corresponding path program 1 times [2018-09-14 17:56:43,386 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:43,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:43,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:43,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:43,388 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:43,698 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:56:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:56:43,932 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:56:43,932 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:56:43,932 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:43,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:56:43,933 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:56:43,933 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:56:43,934 INFO L87 Difference]: Start difference. First operand 2145 states and 3126 transitions. Second operand 6 states. [2018-09-14 17:56:48,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:56:48,477 INFO L93 Difference]: Finished difference Result 7058 states and 10436 transitions. [2018-09-14 17:56:48,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:56:48,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-09-14 17:56:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:56:48,519 INFO L225 Difference]: With dead ends: 7058 [2018-09-14 17:56:48,520 INFO L226 Difference]: Without dead ends: 4919 [2018-09-14 17:56:48,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:56:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2018-09-14 17:56:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4879. [2018-09-14 17:56:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2018-09-14 17:56:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6857 transitions. [2018-09-14 17:56:48,696 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6857 transitions. Word has length 224 [2018-09-14 17:56:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:56:48,697 INFO L480 AbstractCegarLoop]: Abstraction has 4879 states and 6857 transitions. [2018-09-14 17:56:48,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:56:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6857 transitions. [2018-09-14 17:56:48,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-14 17:56:48,702 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:48,703 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:56:48,703 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:48,703 INFO L82 PathProgramCache]: Analyzing trace with hash 433783590, now seen corresponding path program 1 times [2018-09-14 17:56:48,703 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:48,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:48,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:48,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:48,705 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:49,038 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:56:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:56:49,523 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:56:49,523 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:56:49,523 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:56:49,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:56:49,524 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:56:49,524 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:56:49,525 INFO L87 Difference]: Start difference. First operand 4879 states and 6857 transitions. Second operand 6 states. [2018-09-14 17:56:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:56:54,223 INFO L93 Difference]: Finished difference Result 12216 states and 17406 transitions. [2018-09-14 17:56:54,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:56:54,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2018-09-14 17:56:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:56:54,260 INFO L225 Difference]: With dead ends: 12216 [2018-09-14 17:56:54,260 INFO L226 Difference]: Without dead ends: 7343 [2018-09-14 17:56:54,290 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:56:54,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-09-14 17:56:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7306. [2018-09-14 17:56:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2018-09-14 17:56:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9825 transitions. [2018-09-14 17:56:54,485 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9825 transitions. Word has length 244 [2018-09-14 17:56:54,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:56:54,485 INFO L480 AbstractCegarLoop]: Abstraction has 7306 states and 9825 transitions. [2018-09-14 17:56:54,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:56:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9825 transitions. [2018-09-14 17:56:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-09-14 17:56:54,502 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:56:54,503 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:56:54,503 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:56:54,503 INFO L82 PathProgramCache]: Analyzing trace with hash -860566542, now seen corresponding path program 1 times [2018-09-14 17:56:54,504 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:56:54,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:54,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:54,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:56:54,505 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:56:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 184 proven. 37 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-09-14 17:56:55,172 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:56:55,173 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:56:55,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:55,189 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:56:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:55,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:56:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 17:56:56,004 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:56:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 17:56:56,648 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:56:56,648 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:56:56,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:56:56,676 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:56:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:56:56,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:56:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 355 proven. 6 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-14 17:56:57,455 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:56:57,611 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:56:58,434 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 357 proven. 4 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-14 17:56:58,437 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:56:58,437 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-09-14 17:56:58,437 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:56:58,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-14 17:56:58,439 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-14 17:56:58,439 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:56:58,440 INFO L87 Difference]: Start difference. First operand 7306 states and 9825 transitions. Second operand 11 states. [2018-09-14 17:57:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:07,146 INFO L93 Difference]: Finished difference Result 17368 states and 23188 transitions. [2018-09-14 17:57:07,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-14 17:57:07,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 424 [2018-09-14 17:57:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:07,188 INFO L225 Difference]: With dead ends: 17368 [2018-09-14 17:57:07,188 INFO L226 Difference]: Without dead ends: 6560 [2018-09-14 17:57:07,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1728 GetRequests, 1696 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2018-09-14 17:57:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2018-09-14 17:57:07,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 6182. [2018-09-14 17:57:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6182 states. [2018-09-14 17:57:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 6672 transitions. [2018-09-14 17:57:07,401 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 6672 transitions. Word has length 424 [2018-09-14 17:57:07,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:07,401 INFO L480 AbstractCegarLoop]: Abstraction has 6182 states and 6672 transitions. [2018-09-14 17:57:07,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-14 17:57:07,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 6672 transitions. [2018-09-14 17:57:07,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-09-14 17:57:07,414 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:07,415 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 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 17:57:07,415 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:07,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1728324525, now seen corresponding path program 1 times [2018-09-14 17:57:07,415 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:07,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:07,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:07,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:07,417 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 336 proven. 141 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-14 17:57:08,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:08,139 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:57:08,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:08,156 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:08,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-14 17:57:08,890 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 336 proven. 141 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-14 17:57:09,442 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:09,443 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:57:09,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:09,462 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:09,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-14 17:57:09,964 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:10,231 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 336 proven. 141 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-14 17:57:10,233 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:57:10,234 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-14 17:57:10,234 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:57:10,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:57:10,235 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:57:10,235 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 17:57:10,235 INFO L87 Difference]: Start difference. First operand 6182 states and 6672 transitions. Second operand 9 states. [2018-09-14 17:57:14,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:14,294 INFO L93 Difference]: Finished difference Result 16612 states and 18500 transitions. [2018-09-14 17:57:14,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-14 17:57:14,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 451 [2018-09-14 17:57:14,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:14,330 INFO L225 Difference]: With dead ends: 16612 [2018-09-14 17:57:14,330 INFO L226 Difference]: Without dead ends: 10774 [2018-09-14 17:57:14,340 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1824 GetRequests, 1800 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-14 17:57:14,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2018-09-14 17:57:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10734. [2018-09-14 17:57:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10734 states. [2018-09-14 17:57:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10734 states to 10734 states and 11799 transitions. [2018-09-14 17:57:14,604 INFO L78 Accepts]: Start accepts. Automaton has 10734 states and 11799 transitions. Word has length 451 [2018-09-14 17:57:14,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:14,605 INFO L480 AbstractCegarLoop]: Abstraction has 10734 states and 11799 transitions. [2018-09-14 17:57:14,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:57:14,605 INFO L276 IsEmpty]: Start isEmpty. Operand 10734 states and 11799 transitions. [2018-09-14 17:57:14,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2018-09-14 17:57:14,643 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:14,644 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:57:14,644 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:14,645 INFO L82 PathProgramCache]: Analyzing trace with hash 173709231, now seen corresponding path program 1 times [2018-09-14 17:57:14,645 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:14,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:14,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:14,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:14,646 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-09-14 17:57:15,270 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:57:15,270 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:57:15,270 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:57:15,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:57:15,271 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:57:15,272 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:57:15,272 INFO L87 Difference]: Start difference. First operand 10734 states and 11799 transitions. Second operand 4 states. [2018-09-14 17:57:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:19,338 INFO L93 Difference]: Finished difference Result 23143 states and 26033 transitions. [2018-09-14 17:57:19,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:57:19,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 643 [2018-09-14 17:57:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:19,388 INFO L225 Difference]: With dead ends: 23143 [2018-09-14 17:57:19,388 INFO L226 Difference]: Without dead ends: 14855 [2018-09-14 17:57:19,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:57:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14855 states. [2018-09-14 17:57:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14855 to 14853. [2018-09-14 17:57:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14853 states. [2018-09-14 17:57:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14853 states to 14853 states and 16288 transitions. [2018-09-14 17:57:19,744 INFO L78 Accepts]: Start accepts. Automaton has 14853 states and 16288 transitions. Word has length 643 [2018-09-14 17:57:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:19,745 INFO L480 AbstractCegarLoop]: Abstraction has 14853 states and 16288 transitions. [2018-09-14 17:57:19,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:57:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 14853 states and 16288 transitions. [2018-09-14 17:57:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2018-09-14 17:57:19,962 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:19,963 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:57:19,963 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:19,964 INFO L82 PathProgramCache]: Analyzing trace with hash -936547596, now seen corresponding path program 1 times [2018-09-14 17:57:19,964 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:19,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:19,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:19,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:19,966 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 937 proven. 315 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2018-09-14 17:57:21,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:21,931 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 17:57:21,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:21,940 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:22,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:22,716 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:23,284 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 17:57:23,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-14 17:57:23,284 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:57:23,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:57:23,285 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:57:23,285 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:57:23,286 INFO L87 Difference]: Start difference. First operand 14853 states and 16288 transitions. Second operand 3 states. [2018-09-14 17:57:25,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:25,111 INFO L93 Difference]: Finished difference Result 15515 states and 16952 transitions. [2018-09-14 17:57:25,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:57:25,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 996 [2018-09-14 17:57:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:25,169 INFO L225 Difference]: With dead ends: 15515 [2018-09-14 17:57:25,170 INFO L226 Difference]: Without dead ends: 14853 [2018-09-14 17:57:25,178 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2007 GetRequests, 1995 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:57:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14853 states. [2018-09-14 17:57:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14853 to 14532. [2018-09-14 17:57:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14532 states. [2018-09-14 17:57:25,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14532 states to 14532 states and 15962 transitions. [2018-09-14 17:57:25,460 INFO L78 Accepts]: Start accepts. Automaton has 14532 states and 15962 transitions. Word has length 996 [2018-09-14 17:57:25,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:25,462 INFO L480 AbstractCegarLoop]: Abstraction has 14532 states and 15962 transitions. [2018-09-14 17:57:25,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:57:25,462 INFO L276 IsEmpty]: Start isEmpty. Operand 14532 states and 15962 transitions. [2018-09-14 17:57:25,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2018-09-14 17:57:25,510 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:25,511 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:57:25,511 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:25,512 INFO L82 PathProgramCache]: Analyzing trace with hash 514415591, now seen corresponding path program 1 times [2018-09-14 17:57:25,512 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:25,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:25,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:25,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:25,513 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:26,439 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-14 17:57:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 732 proven. 285 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2018-09-14 17:57:29,443 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:29,444 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:57:29,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:29,452 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:29,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:30,707 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:31,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:31,343 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:57:31,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:31,360 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:31,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:33,135 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-14 17:57:33,758 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:57:33,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 20 [2018-09-14 17:57:33,761 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:57:33,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 17:57:33,763 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 17:57:33,763 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-09-14 17:57:33,765 INFO L87 Difference]: Start difference. First operand 14532 states and 15962 transitions. Second operand 14 states. [2018-09-14 17:57:35,283 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 28 [2018-09-14 17:57:37,234 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2018-09-14 17:57:37,571 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-09-14 17:57:39,202 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2018-09-14 17:57:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:42,750 INFO L93 Difference]: Finished difference Result 29221 states and 33340 transitions. [2018-09-14 17:57:42,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-14 17:57:42,751 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1069 [2018-09-14 17:57:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:42,803 INFO L225 Difference]: With dead ends: 29221 [2018-09-14 17:57:42,804 INFO L226 Difference]: Without dead ends: 15033 [2018-09-14 17:57:42,838 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4353 GetRequests, 4294 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=679, Invalid=2627, Unknown=0, NotChecked=0, Total=3306 [2018-09-14 17:57:42,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15033 states. [2018-09-14 17:57:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15033 to 14199. [2018-09-14 17:57:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14199 states. [2018-09-14 17:57:43,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14199 states to 14199 states and 15272 transitions. [2018-09-14 17:57:43,183 INFO L78 Accepts]: Start accepts. Automaton has 14199 states and 15272 transitions. Word has length 1069 [2018-09-14 17:57:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:43,185 INFO L480 AbstractCegarLoop]: Abstraction has 14199 states and 15272 transitions. [2018-09-14 17:57:43,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-14 17:57:43,185 INFO L276 IsEmpty]: Start isEmpty. Operand 14199 states and 15272 transitions. [2018-09-14 17:57:43,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1246 [2018-09-14 17:57:43,230 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:43,231 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:57:43,231 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:43,231 INFO L82 PathProgramCache]: Analyzing trace with hash -849218157, now seen corresponding path program 1 times [2018-09-14 17:57:43,232 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:43,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:43,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:43,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:43,233 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 598 proven. 449 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2018-09-14 17:57:44,761 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:44,761 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:57:44,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:44,770 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:45,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 1829 proven. 2 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2018-09-14 17:57:46,076 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 598 proven. 449 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2018-09-14 17:57:47,052 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:47,053 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:57:47,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:47,072 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:47,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 1829 proven. 2 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2018-09-14 17:57:48,768 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 598 proven. 449 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2018-09-14 17:57:49,617 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:57:49,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:57:49,618 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:57:49,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:57:49,620 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:57:49,620 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:57:49,620 INFO L87 Difference]: Start difference. First operand 14199 states and 15272 transitions. Second operand 9 states. [2018-09-14 17:57:53,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:57:53,559 INFO L93 Difference]: Finished difference Result 25205 states and 26967 transitions. [2018-09-14 17:57:53,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 17:57:53,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1245 [2018-09-14 17:57:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:57:53,590 INFO L225 Difference]: With dead ends: 25205 [2018-09-14 17:57:53,590 INFO L226 Difference]: Without dead ends: 14074 [2018-09-14 17:57:53,613 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4996 GetRequests, 4974 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:57:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2018-09-14 17:57:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 13702. [2018-09-14 17:57:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13702 states. [2018-09-14 17:57:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13702 states to 13702 states and 14313 transitions. [2018-09-14 17:57:53,827 INFO L78 Accepts]: Start accepts. Automaton has 13702 states and 14313 transitions. Word has length 1245 [2018-09-14 17:57:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:57:53,828 INFO L480 AbstractCegarLoop]: Abstraction has 13702 states and 14313 transitions. [2018-09-14 17:57:53,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:57:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 13702 states and 14313 transitions. [2018-09-14 17:57:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1247 [2018-09-14 17:57:53,855 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:57:53,856 INFO L376 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:57:53,856 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:57:53,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1300584582, now seen corresponding path program 1 times [2018-09-14 17:57:53,857 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:57:53,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:53,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:53,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:57:53,858 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:57:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3011 backedges. 371 proven. 905 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2018-09-14 17:57:55,365 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:57:55,365 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:57:55,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:57:55,373 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:57:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:57:55,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:57:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3011 backedges. 982 proven. 0 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2018-09-14 17:57:56,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:57:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3011 backedges. 371 proven. 905 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2018-09-14 17:57:58,588 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:57:58,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-09-14 17:57:58,588 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:57:58,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:57:58,589 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:57:58,589 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:57:58,590 INFO L87 Difference]: Start difference. First operand 13702 states and 14313 transitions. Second operand 5 states. [2018-09-14 17:58:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:58:02,084 INFO L93 Difference]: Finished difference Result 28023 states and 29257 transitions. [2018-09-14 17:58:02,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:58:02,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1246 [2018-09-14 17:58:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:58:02,112 INFO L225 Difference]: With dead ends: 28023 [2018-09-14 17:58:02,112 INFO L226 Difference]: Without dead ends: 14668 [2018-09-14 17:58:02,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2499 GetRequests, 2489 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:58:02,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14668 states. [2018-09-14 17:58:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14668 to 14337. [2018-09-14 17:58:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14337 states. [2018-09-14 17:58:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14337 states to 14337 states and 14954 transitions. [2018-09-14 17:58:02,347 INFO L78 Accepts]: Start accepts. Automaton has 14337 states and 14954 transitions. Word has length 1246 [2018-09-14 17:58:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:58:02,347 INFO L480 AbstractCegarLoop]: Abstraction has 14337 states and 14954 transitions. [2018-09-14 17:58:02,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:58:02,348 INFO L276 IsEmpty]: Start isEmpty. Operand 14337 states and 14954 transitions. [2018-09-14 17:58:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1290 [2018-09-14 17:58:02,378 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:58:02,379 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:58:02,379 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:58:02,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1095008251, now seen corresponding path program 1 times [2018-09-14 17:58:02,380 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:58:02,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:02,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:02,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:02,381 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:58:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3734 backedges. 791 proven. 449 refuted. 0 times theorem prover too weak. 2494 trivial. 0 not checked. [2018-09-14 17:58:04,257 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:04,257 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:58:04,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:04,264 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:04,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:58:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3734 backedges. 963 proven. 0 refuted. 0 times theorem prover too weak. 2771 trivial. 0 not checked. [2018-09-14 17:58:06,043 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:58:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3734 backedges. 424 proven. 882 refuted. 0 times theorem prover too weak. 2428 trivial. 0 not checked. [2018-09-14 17:58:07,842 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:58:07,843 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 11 [2018-09-14 17:58:07,843 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:58:07,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:58:07,844 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:58:07,844 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:58:07,845 INFO L87 Difference]: Start difference. First operand 14337 states and 14954 transitions. Second operand 6 states. [2018-09-14 17:58:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:58:11,225 INFO L93 Difference]: Finished difference Result 25636 states and 26785 transitions. [2018-09-14 17:58:11,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:58:11,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1289 [2018-09-14 17:58:11,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:58:11,248 INFO L225 Difference]: With dead ends: 25636 [2018-09-14 17:58:11,248 INFO L226 Difference]: Without dead ends: 14659 [2018-09-14 17:58:11,262 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2586 GetRequests, 2573 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:58:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14659 states. [2018-09-14 17:58:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14659 to 14334. [2018-09-14 17:58:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14334 states. [2018-09-14 17:58:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14334 states to 14334 states and 14944 transitions. [2018-09-14 17:58:11,466 INFO L78 Accepts]: Start accepts. Automaton has 14334 states and 14944 transitions. Word has length 1289 [2018-09-14 17:58:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:58:11,467 INFO L480 AbstractCegarLoop]: Abstraction has 14334 states and 14944 transitions. [2018-09-14 17:58:11,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:58:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 14334 states and 14944 transitions. [2018-09-14 17:58:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1495 [2018-09-14 17:58:11,500 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:58:11,501 INFO L376 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:58:11,502 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:58:11,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1424786224, now seen corresponding path program 1 times [2018-09-14 17:58:11,502 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:58:11,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:11,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:11,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:11,504 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:58:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 791 proven. 449 refuted. 0 times theorem prover too weak. 3005 trivial. 0 not checked. [2018-09-14 17:58:13,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:13,732 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:58:13,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:13,739 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:14,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:58:14,622 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-09-14 17:58:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 2210 proven. 6 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2018-09-14 17:58:15,990 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:58:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 455 proven. 2055 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2018-09-14 17:58:20,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:20,512 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:58:20,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:20,536 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:21,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:58:21,780 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-09-14 17:58:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 1969 proven. 6 refuted. 0 times theorem prover too weak. 2270 trivial. 0 not checked. [2018-09-14 17:58:23,733 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:58:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 457 proven. 2053 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2018-09-14 17:58:31,560 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:58:31,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8, 7, 8] total 25 [2018-09-14 17:58:31,562 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:58:31,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 17:58:31,564 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 17:58:31,564 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2018-09-14 17:58:31,564 INFO L87 Difference]: Start difference. First operand 14334 states and 14944 transitions. Second operand 10 states. [2018-09-14 17:58:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:58:39,797 INFO L93 Difference]: Finished difference Result 30080 states and 31458 transitions. [2018-09-14 17:58:39,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 17:58:39,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1494 [2018-09-14 17:58:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:58:39,830 INFO L225 Difference]: With dead ends: 30080 [2018-09-14 17:58:39,830 INFO L226 Difference]: Without dead ends: 16430 [2018-09-14 17:58:39,847 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6003 GetRequests, 5965 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2018-09-14 17:58:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16430 states. [2018-09-14 17:58:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16430 to 16424. [2018-09-14 17:58:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16424 states. [2018-09-14 17:58:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16424 states to 16424 states and 17093 transitions. [2018-09-14 17:58:40,075 INFO L78 Accepts]: Start accepts. Automaton has 16424 states and 17093 transitions. Word has length 1494 [2018-09-14 17:58:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:58:40,076 INFO L480 AbstractCegarLoop]: Abstraction has 16424 states and 17093 transitions. [2018-09-14 17:58:40,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 17:58:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 16424 states and 17093 transitions. [2018-09-14 17:58:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1561 [2018-09-14 17:58:40,111 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:58:40,112 INFO L376 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-14 17:58:40,113 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:58:40,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1103059398, now seen corresponding path program 1 times [2018-09-14 17:58:40,113 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:58:40,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:40,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:40,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:58:40,115 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:58:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 2692 proven. 61 refuted. 0 times theorem prover too weak. 2627 trivial. 0 not checked. [2018-09-14 17:58:43,504 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:43,504 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:58:43,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:43,513 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:43,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:58:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 2334 proven. 2 refuted. 0 times theorem prover too weak. 3044 trivial. 0 not checked. [2018-09-14 17:58:45,380 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:58:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 513 proven. 2166 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2018-09-14 17:58:48,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:58:48,680 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:58:48,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:58:48,698 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:58:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:58:49,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:58:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 2700 proven. 26 refuted. 0 times theorem prover too weak. 2654 trivial. 0 not checked. [2018-09-14 17:58:50,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:58:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 1617 proven. 170 refuted. 0 times theorem prover too weak. 3593 trivial. 0 not checked. [2018-09-14 17:58:53,980 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:58:53,982 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8, 6, 5] total 28 [2018-09-14 17:58:53,982 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:58:53,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 17:58:53,984 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 17:58:53,984 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2018-09-14 17:58:53,985 INFO L87 Difference]: Start difference. First operand 16424 states and 17093 transitions. Second operand 19 states. [2018-09-14 17:59:10,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:59:10,092 INFO L93 Difference]: Finished difference Result 30787 states and 32079 transitions. [2018-09-14 17:59:10,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-14 17:59:10,093 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1560 [2018-09-14 17:59:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:59:10,119 INFO L225 Difference]: With dead ends: 30787 [2018-09-14 17:59:10,119 INFO L226 Difference]: Without dead ends: 16427 [2018-09-14 17:59:10,131 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6320 GetRequests, 6252 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=588, Invalid=3072, Unknown=0, NotChecked=0, Total=3660 [2018-09-14 17:59:10,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16427 states. [2018-09-14 17:59:10,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16427 to 15055. [2018-09-14 17:59:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15055 states. [2018-09-14 17:59:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15055 states to 15055 states and 15585 transitions. [2018-09-14 17:59:10,339 INFO L78 Accepts]: Start accepts. Automaton has 15055 states and 15585 transitions. Word has length 1560 [2018-09-14 17:59:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:59:10,340 INFO L480 AbstractCegarLoop]: Abstraction has 15055 states and 15585 transitions. [2018-09-14 17:59:10,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-14 17:59:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 15055 states and 15585 transitions. [2018-09-14 17:59:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2149 [2018-09-14 17:59:10,400 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:59:10,401 INFO L376 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-14 17:59:10,401 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:59:10,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1147225091, now seen corresponding path program 1 times [2018-09-14 17:59:10,402 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:59:10,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:59:10,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:59:10,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:59:10,404 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:59:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:59:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 1643 proven. 827 refuted. 0 times theorem prover too weak. 5914 trivial. 0 not checked. [2018-09-14 17:59:17,065 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:59:17,065 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:59:17,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:59:17,074 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:59:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:59:17,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:59:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 5452 proven. 2 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2018-09-14 17:59:19,832 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:59:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 1643 proven. 827 refuted. 0 times theorem prover too weak. 5914 trivial. 0 not checked. [2018-09-14 17:59:25,500 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:59:25,500 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:59:25,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:59:25,516 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:59:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:59:26,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:59:27,553 WARN L178 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-14 17:59:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 5452 proven. 2 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2018-09-14 17:59:30,994 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:59:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 1643 proven. 827 refuted. 0 times theorem prover too weak. 5914 trivial. 0 not checked. [2018-09-14 17:59:38,198 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:59:38,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 7, 8] total 26 [2018-09-14 17:59:38,200 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:59:38,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 17:59:38,202 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 17:59:38,202 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2018-09-14 17:59:38,202 INFO L87 Difference]: Start difference. First operand 15055 states and 15585 transitions. Second operand 13 states. [2018-09-14 17:59:39,778 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2018-09-14 17:59:47,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:59:47,034 INFO L93 Difference]: Finished difference Result 27042 states and 28038 transitions. [2018-09-14 17:59:47,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-14 17:59:47,035 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 2148 [2018-09-14 17:59:47,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:59:47,067 INFO L225 Difference]: With dead ends: 27042 [2018-09-14 17:59:47,067 INFO L226 Difference]: Without dead ends: 15745 [2018-09-14 17:59:47,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8660 GetRequests, 8597 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=613, Invalid=3047, Unknown=0, NotChecked=0, Total=3660 [2018-09-14 17:59:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15745 states. [2018-09-14 17:59:47,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15745 to 15397. [2018-09-14 17:59:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15397 states. [2018-09-14 17:59:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15397 states to 15397 states and 15898 transitions. [2018-09-14 17:59:47,259 INFO L78 Accepts]: Start accepts. Automaton has 15397 states and 15898 transitions. Word has length 2148 [2018-09-14 17:59:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:59:47,260 INFO L480 AbstractCegarLoop]: Abstraction has 15397 states and 15898 transitions. [2018-09-14 17:59:47,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 17:59:47,260 INFO L276 IsEmpty]: Start isEmpty. Operand 15397 states and 15898 transitions. [2018-09-14 17:59:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2287 [2018-09-14 17:59:47,315 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:59:47,316 INFO L376 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-14 17:59:47,316 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:59:47,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1849978105, now seen corresponding path program 1 times [2018-09-14 17:59:47,317 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:59:47,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:59:47,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:59:47,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:59:47,318 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:59:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:59:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9630 backedges. 1528 proven. 6078 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2018-09-14 17:59:59,064 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:59:59,064 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:59:59,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:59:59,072 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:59:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:59:59,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:00:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9630 backedges. 1412 proven. 56 refuted. 0 times theorem prover too weak. 8162 trivial. 0 not checked. [2018-09-14 18:00:02,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-14 18:00:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9630 backedges. 1466 proven. 2 refuted. 0 times theorem prover too weak. 8162 trivial. 0 not checked. [2018-09-14 18:00:05,813 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:00:05,813 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:00:05,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:05,829 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:00:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:07,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:00:07,126 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 18:00:07,328 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:00:07,328 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:00:07,335 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:00:07,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:00:07 BoogieIcfgContainer [2018-09-14 18:00:07,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:00:07,336 INFO L168 Benchmark]: Toolchain (without parser) took 230382.91 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-14 18:00:07,338 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 18:00:07,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1083.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:07,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 160.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:07,339 INFO L168 Benchmark]: Boogie Preprocessor took 475.23 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -982.1 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:07,343 INFO L168 Benchmark]: RCFGBuilder took 6565.74 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:07,343 INFO L168 Benchmark]: TraceAbstraction took 222090.67 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 765.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:00:07,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1083.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 160.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 475.23 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.1 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -982.1 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6565.74 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222090.67 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 765.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was analyzing trace of length 2287 with TraceHistMax 13, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 222.0s OverallTime, 17 OverallIterations, 13 TraceHistogramMax, 97.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1628 SDtfs, 36296 SDslu, 2766 SDs, 0 SdLazy, 65001 SolverSat, 7926 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41026 GetRequests, 40650 SyntacticMatches, 53 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3230 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16424occurred in iteration=14, 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: 3.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 4799 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 7.9s SatisfiabilityAnalysisTime, 75.8s InterpolantComputationTime, 33669 NumberOfCodeBlocks, 33669 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 53932 ConstructedInterpolants, 0 QuantifiedInterpolants, 291533883 SizeOfPredicates, 35 NumberOfNonLiveVariables, 26573 ConjunctsInSsa, 231 ConjunctsInUnsatCore, 50 InterpolantComputations, 10 PerfectInterpolantSequences, 130185/145242 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/Problem16_label45_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-00-07-364.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label45_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-00-07-364.csv Completed graceful shutdown