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 0.1.23-69f5bdd-m [2018-09-18 12:06:07,226 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:06:07,228 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:06:07,240 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:06:07,240 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:06:07,241 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:06:07,243 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:06:07,248 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:06:07,251 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:06:07,252 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:06:07,253 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:06:07,253 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:06:07,254 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:06:07,255 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:06:07,257 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:06:07,257 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:06:07,258 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:06:07,260 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:06:07,262 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:06:07,263 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:06:07,264 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:06:07,265 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:06:07,268 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:06:07,268 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:06:07,268 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:06:07,269 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:06:07,270 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:06:07,271 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:06:07,272 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:06:07,273 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:06:07,273 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:06:07,274 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 12:06:07,274 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 12:06:07,274 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 12:06:07,275 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 12:06:07,276 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 12:06:07,276 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:06:07,293 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:06:07,293 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:06:07,294 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:06:07,294 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:06:07,295 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:06:07,295 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:06:07,295 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:06:07,295 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:06:07,295 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:06:07,296 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:06:07,296 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:06:07,296 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:06:07,297 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:06:07,297 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:06:07,297 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:06:07,297 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:06:07,298 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:06:07,298 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:06:07,298 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:06:07,298 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:06:07,298 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:06:07,299 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:06:07,299 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:06:07,299 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:06:07,299 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:06:07,299 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:06:07,300 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:06:07,300 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:06:07,300 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:06:07,300 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:06:07,300 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:06:07,301 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:06:07,301 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:06:07,301 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:06:07,367 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:06:07,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:06:07,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:06:07,393 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:06:07,397 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:06:07,398 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-09-18 12:06:07,742 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4242ba60f/bc1d0373e8604b4bb55f16f365b66e7b/FLAGa7eb6da0b [2018-09-18 12:06:08,160 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:06:08,161 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-09-18 12:06:08,185 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4242ba60f/bc1d0373e8604b4bb55f16f365b66e7b/FLAGa7eb6da0b [2018-09-18 12:06:08,202 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4242ba60f/bc1d0373e8604b4bb55f16f365b66e7b [2018-09-18 12:06:08,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:06:08,216 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:06:08,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:06:08,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:06:08,225 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:06:08,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:06:08" (1/1) ... [2018-09-18 12:06:08,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2872e34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:08, skipping insertion in model container [2018-09-18 12:06:08,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:06:08" (1/1) ... [2018-09-18 12:06:08,241 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:06:09,046 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:06:09,069 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:06:09,501 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:06:09,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09 WrapperNode [2018-09-18 12:06:09,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:06:09,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:06:09,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:06:09,617 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:06:09,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... [2018-09-18 12:06:09,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... [2018-09-18 12:06:10,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:06:10,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:06:10,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:06:10,045 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:06:10,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... [2018-09-18 12:06:10,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... [2018-09-18 12:06:10,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... [2018-09-18 12:06:10,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... [2018-09-18 12:06:10,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... [2018-09-18 12:06:10,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... [2018-09-18 12:06:10,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... [2018-09-18 12:06:10,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:06:10,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:06:10,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:06:10,221 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:06:10,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:06:10,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:06:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:06:10,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:06:10,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:06:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:06:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:06:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:06:10,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:06:10,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:06:10,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:06:16,093 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:06:16,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:06:16 BoogieIcfgContainer [2018-09-18 12:06:16,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:06:16,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:06:16,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:06:16,099 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:06:16,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:06:08" (1/3) ... [2018-09-18 12:06:16,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620cb142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:06:16, skipping insertion in model container [2018-09-18 12:06:16,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:06:09" (2/3) ... [2018-09-18 12:06:16,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620cb142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:06:16, skipping insertion in model container [2018-09-18 12:06:16,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:06:16" (3/3) ... [2018-09-18 12:06:16,104 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label45_true-unreach-call.c [2018-09-18 12:06:16,115 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:06:16,125 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:06:16,188 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:06:16,189 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:06:16,190 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:06:16,190 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:06:16,190 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:06:16,190 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:06:16,190 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:06:16,190 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:06:16,191 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:06:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-09-18 12:06:16,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-18 12:06:16,236 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:16,237 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] [2018-09-18 12:06:16,238 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:16,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1570242596, now seen corresponding path program 1 times [2018-09-18 12:06:16,248 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:16,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:16,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:16,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:16,312 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:16,774 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:06:16,774 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:06:16,775 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:16,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:06:16,798 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:06:16,799 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:06:16,802 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-09-18 12:06:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:23,302 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-09-18 12:06:23,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:06:23,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-09-18 12:06:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:23,335 INFO L225 Difference]: With dead ends: 1513 [2018-09-18 12:06:23,336 INFO L226 Difference]: Without dead ends: 1097 [2018-09-18 12:06:23,346 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 [2018-09-18 12:06:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-09-18 12:06:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-09-18 12:06:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-09-18 12:06:23,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1301 transitions. [2018-09-18 12:06:23,476 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1301 transitions. Word has length 60 [2018-09-18 12:06:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:23,477 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1301 transitions. [2018-09-18 12:06:23,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:06:23,478 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1301 transitions. [2018-09-18 12:06:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-18 12:06:23,488 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:23,489 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] [2018-09-18 12:06:23,489 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:23,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1372196061, now seen corresponding path program 1 times [2018-09-18 12:06:23,490 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:23,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:23,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:23,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:23,492 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:23,997 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:06:23,998 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:06:23,998 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:24,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:06:24,001 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:06:24,001 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:06:24,002 INFO L87 Difference]: Start difference. First operand 744 states and 1301 transitions. Second operand 6 states. [2018-09-18 12:06:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:29,318 INFO L93 Difference]: Finished difference Result 2196 states and 3924 transitions. [2018-09-18 12:06:29,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:06:29,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-09-18 12:06:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:29,341 INFO L225 Difference]: With dead ends: 2196 [2018-09-18 12:06:29,341 INFO L226 Difference]: Without dead ends: 1458 [2018-09-18 12:06:29,345 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:06:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-09-18 12:06:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-09-18 12:06:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-09-18 12:06:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2463 transitions. [2018-09-18 12:06:29,437 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2463 transitions. Word has length 131 [2018-09-18 12:06:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:29,438 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2463 transitions. [2018-09-18 12:06:29,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:06:29,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2463 transitions. [2018-09-18 12:06:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-18 12:06:29,449 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:29,449 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] [2018-09-18 12:06:29,450 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:29,450 INFO L82 PathProgramCache]: Analyzing trace with hash 822565126, now seen corresponding path program 1 times [2018-09-18 12:06:29,450 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:29,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:29,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:29,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:29,454 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:29,713 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:06:29,713 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:06:29,713 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:29,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:06:29,714 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:06:29,714 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:06:29,715 INFO L87 Difference]: Start difference. First operand 1438 states and 2463 transitions. Second operand 5 states. [2018-09-18 12:06:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:34,053 INFO L93 Difference]: Finished difference Result 3597 states and 6200 transitions. [2018-09-18 12:06:34,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:06:34,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-09-18 12:06:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:34,072 INFO L225 Difference]: With dead ends: 3597 [2018-09-18 12:06:34,072 INFO L226 Difference]: Without dead ends: 2165 [2018-09-18 12:06:34,080 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:06:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2018-09-18 12:06:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2145. [2018-09-18 12:06:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-09-18 12:06:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3126 transitions. [2018-09-18 12:06:34,164 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3126 transitions. Word has length 132 [2018-09-18 12:06:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:34,165 INFO L480 AbstractCegarLoop]: Abstraction has 2145 states and 3126 transitions. [2018-09-18 12:06:34,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:06:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3126 transitions. [2018-09-18 12:06:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-18 12:06:34,170 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:34,171 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] [2018-09-18 12:06:34,171 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:34,171 INFO L82 PathProgramCache]: Analyzing trace with hash 9848590, now seen corresponding path program 1 times [2018-09-18 12:06:34,172 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:34,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:34,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:34,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:34,173 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:34,605 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:06:34,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:06:34,605 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:34,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:06:34,606 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:06:34,606 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:06:34,607 INFO L87 Difference]: Start difference. First operand 2145 states and 3126 transitions. Second operand 6 states. [2018-09-18 12:06:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:38,681 INFO L93 Difference]: Finished difference Result 7058 states and 10436 transitions. [2018-09-18 12:06:38,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:06:38,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-09-18 12:06:38,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:38,716 INFO L225 Difference]: With dead ends: 7058 [2018-09-18 12:06:38,716 INFO L226 Difference]: Without dead ends: 4919 [2018-09-18 12:06:38,735 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:06:38,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2018-09-18 12:06:38,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4879. [2018-09-18 12:06:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2018-09-18 12:06:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6857 transitions. [2018-09-18 12:06:38,891 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6857 transitions. Word has length 224 [2018-09-18 12:06:38,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:38,892 INFO L480 AbstractCegarLoop]: Abstraction has 4879 states and 6857 transitions. [2018-09-18 12:06:38,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:06:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6857 transitions. [2018-09-18 12:06:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-18 12:06:38,897 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:38,898 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] [2018-09-18 12:06:38,898 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:38,898 INFO L82 PathProgramCache]: Analyzing trace with hash 433783590, now seen corresponding path program 1 times [2018-09-18 12:06:38,899 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:38,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:38,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:38,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:38,900 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:39,275 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:06:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:06:39,756 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:06:39,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 12:06:39,756 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:06:39,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:06:39,757 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:06:39,757 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:06:39,758 INFO L87 Difference]: Start difference. First operand 4879 states and 6857 transitions. Second operand 6 states. [2018-09-18 12:06:44,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:44,551 INFO L93 Difference]: Finished difference Result 12216 states and 17406 transitions. [2018-09-18 12:06:44,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:06:44,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2018-09-18 12:06:44,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:44,595 INFO L225 Difference]: With dead ends: 12216 [2018-09-18 12:06:44,595 INFO L226 Difference]: Without dead ends: 7343 [2018-09-18 12:06:44,626 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:06:44,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-09-18 12:06:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7306. [2018-09-18 12:06:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2018-09-18 12:06:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9825 transitions. [2018-09-18 12:06:44,813 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9825 transitions. Word has length 244 [2018-09-18 12:06:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:44,813 INFO L480 AbstractCegarLoop]: Abstraction has 7306 states and 9825 transitions. [2018-09-18 12:06:44,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:06:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9825 transitions. [2018-09-18 12:06:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-09-18 12:06:44,831 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:44,832 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] [2018-09-18 12:06:44,832 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:44,833 INFO L82 PathProgramCache]: Analyzing trace with hash -860566542, now seen corresponding path program 1 times [2018-09-18 12:06:44,833 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:44,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:44,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:44,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:44,834 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 184 proven. 37 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-09-18 12:06:45,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:45,602 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:06:45,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:45,612 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:45,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:06:46,285 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 360 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:06:46,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:46,828 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:06:46,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:46,856 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:47,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 355 proven. 6 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-18 12:06:47,611 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 357 proven. 4 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-18 12:06:48,159 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:06:48,159 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 13 [2018-09-18 12:06:48,159 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:06:48,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-18 12:06:48,162 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-18 12:06:48,162 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:06:48,162 INFO L87 Difference]: Start difference. First operand 7306 states and 9825 transitions. Second operand 11 states. [2018-09-18 12:06:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:06:57,309 INFO L93 Difference]: Finished difference Result 17368 states and 23188 transitions. [2018-09-18 12:06:57,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 12:06:57,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 424 [2018-09-18 12:06:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:06:57,344 INFO L225 Difference]: With dead ends: 17368 [2018-09-18 12:06:57,345 INFO L226 Difference]: Without dead ends: 6560 [2018-09-18 12:06:57,423 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1728 GetRequests, 1696 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2018-09-18 12:06:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2018-09-18 12:06:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 6182. [2018-09-18 12:06:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6182 states. [2018-09-18 12:06:57,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 6672 transitions. [2018-09-18 12:06:57,592 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 6672 transitions. Word has length 424 [2018-09-18 12:06:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:06:57,593 INFO L480 AbstractCegarLoop]: Abstraction has 6182 states and 6672 transitions. [2018-09-18 12:06:57,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-18 12:06:57,593 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 6672 transitions. [2018-09-18 12:06:57,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-09-18 12:06:57,607 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:06:57,607 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] [2018-09-18 12:06:57,608 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:06:57,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1728324525, now seen corresponding path program 1 times [2018-09-18 12:06:57,608 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:06:57,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:57,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:57,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:06:57,610 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:06:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 336 proven. 141 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-18 12:06:58,357 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:58,357 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) [2018-09-18 12:06:58,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:06:58,374 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:58,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-18 12:06:58,746 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 336 proven. 141 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-18 12:06:59,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:06:59,074 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 [2018-09-18 12:06:59,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:06:59,091 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:06:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:06:59,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:06:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 508 proven. 2 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-18 12:06:59,548 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:06:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 336 proven. 141 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-09-18 12:06:59,955 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:06:59,956 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 12:06:59,956 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:06:59,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:06:59,957 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:06:59,957 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:06:59,958 INFO L87 Difference]: Start difference. First operand 6182 states and 6672 transitions. Second operand 9 states. [2018-09-18 12:07:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:04,080 INFO L93 Difference]: Finished difference Result 16612 states and 18500 transitions. [2018-09-18 12:07:04,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-18 12:07:04,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 451 [2018-09-18 12:07:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:04,120 INFO L225 Difference]: With dead ends: 16612 [2018-09-18 12:07:04,121 INFO L226 Difference]: Without dead ends: 10774 [2018-09-18 12:07:04,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1824 GetRequests, 1800 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:07:04,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2018-09-18 12:07:04,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10734. [2018-09-18 12:07:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10734 states. [2018-09-18 12:07:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10734 states to 10734 states and 11799 transitions. [2018-09-18 12:07:04,381 INFO L78 Accepts]: Start accepts. Automaton has 10734 states and 11799 transitions. Word has length 451 [2018-09-18 12:07:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:04,382 INFO L480 AbstractCegarLoop]: Abstraction has 10734 states and 11799 transitions. [2018-09-18 12:07:04,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:07:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 10734 states and 11799 transitions. [2018-09-18 12:07:04,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2018-09-18 12:07:04,418 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:04,419 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] [2018-09-18 12:07:04,419 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:04,420 INFO L82 PathProgramCache]: Analyzing trace with hash 173709231, now seen corresponding path program 1 times [2018-09-18 12:07:04,420 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:04,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:04,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:04,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:04,422 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-09-18 12:07:05,108 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:07:05,108 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:07:05,108 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:07:05,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:07:05,109 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:07:05,111 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:07:05,111 INFO L87 Difference]: Start difference. First operand 10734 states and 11799 transitions. Second operand 4 states. [2018-09-18 12:07:07,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:07,697 INFO L93 Difference]: Finished difference Result 23143 states and 26033 transitions. [2018-09-18 12:07:07,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:07:07,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 643 [2018-09-18 12:07:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:07,760 INFO L225 Difference]: With dead ends: 23143 [2018-09-18 12:07:07,760 INFO L226 Difference]: Without dead ends: 14855 [2018-09-18 12:07:07,784 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 [2018-09-18 12:07:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14855 states. [2018-09-18 12:07:08,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14855 to 14853. [2018-09-18 12:07:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14853 states. [2018-09-18 12:07:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14853 states to 14853 states and 16288 transitions. [2018-09-18 12:07:08,134 INFO L78 Accepts]: Start accepts. Automaton has 14853 states and 16288 transitions. Word has length 643 [2018-09-18 12:07:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:08,136 INFO L480 AbstractCegarLoop]: Abstraction has 14853 states and 16288 transitions. [2018-09-18 12:07:08,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:07:08,136 INFO L276 IsEmpty]: Start isEmpty. Operand 14853 states and 16288 transitions. [2018-09-18 12:07:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2018-09-18 12:07:08,213 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:08,214 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] [2018-09-18 12:07:08,214 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:08,215 INFO L82 PathProgramCache]: Analyzing trace with hash -936547596, now seen corresponding path program 1 times [2018-09-18 12:07:08,215 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:08,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:08,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:08,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:08,216 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 937 proven. 315 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2018-09-18 12:07:10,915 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:10,915 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:10,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:10,927 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:11,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:11,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:12,213 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:12,976 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 12:07:12,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-18 12:07:12,976 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:07:12,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:07:12,977 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:07:12,977 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:07:12,977 INFO L87 Difference]: Start difference. First operand 14853 states and 16288 transitions. Second operand 3 states. [2018-09-18 12:07:14,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:14,503 INFO L93 Difference]: Finished difference Result 15515 states and 16952 transitions. [2018-09-18 12:07:14,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:07:14,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 996 [2018-09-18 12:07:14,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:14,547 INFO L225 Difference]: With dead ends: 15515 [2018-09-18 12:07:14,547 INFO L226 Difference]: Without dead ends: 14853 [2018-09-18 12:07:14,556 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2007 GetRequests, 1995 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:07:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14853 states. [2018-09-18 12:07:14,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14853 to 14532. [2018-09-18 12:07:14,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14532 states. [2018-09-18 12:07:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14532 states to 14532 states and 15962 transitions. [2018-09-18 12:07:14,836 INFO L78 Accepts]: Start accepts. Automaton has 14532 states and 15962 transitions. Word has length 996 [2018-09-18 12:07:14,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:14,838 INFO L480 AbstractCegarLoop]: Abstraction has 14532 states and 15962 transitions. [2018-09-18 12:07:14,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:07:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 14532 states and 15962 transitions. [2018-09-18 12:07:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1070 [2018-09-18 12:07:14,888 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:14,889 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] [2018-09-18 12:07:14,889 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:14,890 INFO L82 PathProgramCache]: Analyzing trace with hash 514415591, now seen corresponding path program 1 times [2018-09-18 12:07:14,890 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:14,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:14,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:14,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:14,891 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:15,863 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-09-18 12:07:16,497 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-09-18 12:07:16,902 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-09-18 12:07:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 732 proven. 285 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2018-09-18 12:07:19,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:19,811 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 [2018-09-18 12:07:19,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:19,819 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:20,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:20,854 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:21,849 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:21,849 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 [2018-09-18 12:07:21,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:21,865 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:22,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:22,827 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1827 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-09-18 12:07:23,429 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:07:23,430 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 20 [2018-09-18 12:07:23,431 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:07:23,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-18 12:07:23,433 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-18 12:07:23,433 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-09-18 12:07:23,433 INFO L87 Difference]: Start difference. First operand 14532 states and 15962 transitions. Second operand 14 states. [2018-09-18 12:07:28,593 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2018-09-18 12:07:32,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:32,110 INFO L93 Difference]: Finished difference Result 29221 states and 33340 transitions. [2018-09-18 12:07:32,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-18 12:07:32,111 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1069 [2018-09-18 12:07:32,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:32,173 INFO L225 Difference]: With dead ends: 29221 [2018-09-18 12:07:32,174 INFO L226 Difference]: Without dead ends: 15033 [2018-09-18 12:07:32,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4353 GetRequests, 4294 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=679, Invalid=2627, Unknown=0, NotChecked=0, Total=3306 [2018-09-18 12:07:32,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15033 states. [2018-09-18 12:07:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15033 to 14199. [2018-09-18 12:07:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14199 states. [2018-09-18 12:07:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14199 states to 14199 states and 15272 transitions. [2018-09-18 12:07:32,548 INFO L78 Accepts]: Start accepts. Automaton has 14199 states and 15272 transitions. Word has length 1069 [2018-09-18 12:07:32,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:32,549 INFO L480 AbstractCegarLoop]: Abstraction has 14199 states and 15272 transitions. [2018-09-18 12:07:32,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-18 12:07:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 14199 states and 15272 transitions. [2018-09-18 12:07:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1246 [2018-09-18 12:07:32,606 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:32,607 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] [2018-09-18 12:07:32,608 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash -849218157, now seen corresponding path program 1 times [2018-09-18 12:07:32,608 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:32,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:32,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:32,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:32,610 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 598 proven. 449 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2018-09-18 12:07:34,105 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:34,105 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:34,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:34,113 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:34,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 1829 proven. 2 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2018-09-18 12:07:35,173 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 598 proven. 449 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2018-09-18 12:07:35,970 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:35,970 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:07:35,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:35,987 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:36,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 1829 proven. 2 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2018-09-18 12:07:37,247 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3005 backedges. 598 proven. 449 refuted. 0 times theorem prover too weak. 1958 trivial. 0 not checked. [2018-09-18 12:07:38,046 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:07:38,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 12:07:38,047 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:07:38,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:07:38,049 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:07:38,049 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:07:38,049 INFO L87 Difference]: Start difference. First operand 14199 states and 15272 transitions. Second operand 9 states. [2018-09-18 12:07:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:41,511 INFO L93 Difference]: Finished difference Result 25205 states and 26967 transitions. [2018-09-18 12:07:41,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 12:07:41,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1245 [2018-09-18 12:07:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:41,554 INFO L225 Difference]: With dead ends: 25205 [2018-09-18 12:07:41,554 INFO L226 Difference]: Without dead ends: 14074 [2018-09-18 12:07:41,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4996 GetRequests, 4974 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-09-18 12:07:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2018-09-18 12:07:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 13702. [2018-09-18 12:07:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13702 states. [2018-09-18 12:07:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13702 states to 13702 states and 14313 transitions. [2018-09-18 12:07:41,852 INFO L78 Accepts]: Start accepts. Automaton has 13702 states and 14313 transitions. Word has length 1245 [2018-09-18 12:07:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:41,853 INFO L480 AbstractCegarLoop]: Abstraction has 13702 states and 14313 transitions. [2018-09-18 12:07:41,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:07:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 13702 states and 14313 transitions. [2018-09-18 12:07:41,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1247 [2018-09-18 12:07:41,898 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:41,899 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] [2018-09-18 12:07:41,900 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:41,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1300584582, now seen corresponding path program 1 times [2018-09-18 12:07:41,902 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:41,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:41,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:41,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:41,903 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3011 backedges. 371 proven. 905 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2018-09-18 12:07:43,492 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:43,492 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:43,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:43,503 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:43,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3011 backedges. 982 proven. 0 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2018-09-18 12:07:44,578 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3011 backedges. 371 proven. 905 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2018-09-18 12:07:46,444 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:07:46,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-09-18 12:07:46,445 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:07:46,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:07:46,446 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:07:46,446 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-18 12:07:46,446 INFO L87 Difference]: Start difference. First operand 13702 states and 14313 transitions. Second operand 5 states. [2018-09-18 12:07:50,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:50,525 INFO L93 Difference]: Finished difference Result 28023 states and 29257 transitions. [2018-09-18 12:07:50,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:07:50,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1246 [2018-09-18 12:07:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:50,555 INFO L225 Difference]: With dead ends: 28023 [2018-09-18 12:07:50,556 INFO L226 Difference]: Without dead ends: 14668 [2018-09-18 12:07:50,568 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2499 GetRequests, 2489 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 12:07:50,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14668 states. [2018-09-18 12:07:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14668 to 14337. [2018-09-18 12:07:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14337 states. [2018-09-18 12:07:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14337 states to 14337 states and 14954 transitions. [2018-09-18 12:07:50,768 INFO L78 Accepts]: Start accepts. Automaton has 14337 states and 14954 transitions. Word has length 1246 [2018-09-18 12:07:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:50,768 INFO L480 AbstractCegarLoop]: Abstraction has 14337 states and 14954 transitions. [2018-09-18 12:07:50,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:07:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 14337 states and 14954 transitions. [2018-09-18 12:07:50,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1290 [2018-09-18 12:07:50,796 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:50,797 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] [2018-09-18 12:07:50,797 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:50,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1095008251, now seen corresponding path program 1 times [2018-09-18 12:07:50,798 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:50,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:50,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:50,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:50,800 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3734 backedges. 791 proven. 449 refuted. 0 times theorem prover too weak. 2494 trivial. 0 not checked. [2018-09-18 12:07:52,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:07:52,318 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:07:52,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:52,327 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:07:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:07:52,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:07:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3734 backedges. 963 proven. 0 refuted. 0 times theorem prover too weak. 2771 trivial. 0 not checked. [2018-09-18 12:07:54,120 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:07:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3734 backedges. 424 proven. 882 refuted. 0 times theorem prover too weak. 2428 trivial. 0 not checked. [2018-09-18 12:07:55,852 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:07:55,853 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 11 [2018-09-18 12:07:55,853 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:07:55,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:07:55,854 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:07:55,854 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-18 12:07:55,854 INFO L87 Difference]: Start difference. First operand 14337 states and 14954 transitions. Second operand 6 states. [2018-09-18 12:07:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:07:59,334 INFO L93 Difference]: Finished difference Result 25636 states and 26785 transitions. [2018-09-18 12:07:59,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-18 12:07:59,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1289 [2018-09-18 12:07:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:07:59,360 INFO L225 Difference]: With dead ends: 25636 [2018-09-18 12:07:59,360 INFO L226 Difference]: Without dead ends: 14659 [2018-09-18 12:07:59,374 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2586 GetRequests, 2573 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:07:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14659 states. [2018-09-18 12:07:59,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14659 to 14334. [2018-09-18 12:07:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14334 states. [2018-09-18 12:07:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14334 states to 14334 states and 14944 transitions. [2018-09-18 12:07:59,587 INFO L78 Accepts]: Start accepts. Automaton has 14334 states and 14944 transitions. Word has length 1289 [2018-09-18 12:07:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:07:59,588 INFO L480 AbstractCegarLoop]: Abstraction has 14334 states and 14944 transitions. [2018-09-18 12:07:59,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:07:59,588 INFO L276 IsEmpty]: Start isEmpty. Operand 14334 states and 14944 transitions. [2018-09-18 12:07:59,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1495 [2018-09-18 12:07:59,617 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:07:59,618 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] [2018-09-18 12:07:59,618 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:07:59,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1424786224, now seen corresponding path program 1 times [2018-09-18 12:07:59,619 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:07:59,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:59,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:07:59,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:07:59,620 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:07:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:01,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 791 proven. 449 refuted. 0 times theorem prover too weak. 3005 trivial. 0 not checked. [2018-09-18 12:08:01,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:01,409 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:08:01,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:01,417 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:01,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 2210 proven. 6 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2018-09-18 12:08:03,236 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 455 proven. 2055 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2018-09-18 12:08:07,538 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:07,538 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:08:07,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:07,564 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:08,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 1969 proven. 6 refuted. 0 times theorem prover too weak. 2270 trivial. 0 not checked. [2018-09-18 12:08:10,546 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4245 backedges. 457 proven. 2053 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2018-09-18 12:08:18,267 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:08:18,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8, 7, 8] total 25 [2018-09-18 12:08:18,268 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:08:18,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 12:08:18,270 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 12:08:18,270 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2018-09-18 12:08:18,271 INFO L87 Difference]: Start difference. First operand 14334 states and 14944 transitions. Second operand 10 states. [2018-09-18 12:08:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:08:24,897 INFO L93 Difference]: Finished difference Result 30080 states and 31458 transitions. [2018-09-18 12:08:24,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-18 12:08:24,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1494 [2018-09-18 12:08:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:08:24,925 INFO L225 Difference]: With dead ends: 30080 [2018-09-18 12:08:24,925 INFO L226 Difference]: Without dead ends: 16430 [2018-09-18 12:08:24,938 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6003 GetRequests, 5965 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2018-09-18 12:08:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16430 states. [2018-09-18 12:08:25,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16430 to 16424. [2018-09-18 12:08:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16424 states. [2018-09-18 12:08:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16424 states to 16424 states and 17093 transitions. [2018-09-18 12:08:25,168 INFO L78 Accepts]: Start accepts. Automaton has 16424 states and 17093 transitions. Word has length 1494 [2018-09-18 12:08:25,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:08:25,169 INFO L480 AbstractCegarLoop]: Abstraction has 16424 states and 17093 transitions. [2018-09-18 12:08:25,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 12:08:25,169 INFO L276 IsEmpty]: Start isEmpty. Operand 16424 states and 17093 transitions. [2018-09-18 12:08:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1561 [2018-09-18 12:08:25,207 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:08:25,208 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] [2018-09-18 12:08:25,208 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:08:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1103059398, now seen corresponding path program 1 times [2018-09-18 12:08:25,209 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:08:25,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:25,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:25,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:25,210 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:08:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 2692 proven. 61 refuted. 0 times theorem prover too weak. 2627 trivial. 0 not checked. [2018-09-18 12:08:28,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:28,600 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 [2018-09-18 12:08:28,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:28,611 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:28,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 2334 proven. 2 refuted. 0 times theorem prover too weak. 3044 trivial. 0 not checked. [2018-09-18 12:08:30,205 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:30,641 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-09-18 12:08:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 513 proven. 2166 refuted. 0 times theorem prover too weak. 2701 trivial. 0 not checked. [2018-09-18 12:08:33,500 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:08:33,501 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 [2018-09-18 12:08:33,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:33,520 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:08:34,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:34,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:08:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 2700 proven. 26 refuted. 0 times theorem prover too weak. 2654 trivial. 0 not checked. [2018-09-18 12:08:35,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:08:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5380 backedges. 1617 proven. 170 refuted. 0 times theorem prover too weak. 3593 trivial. 0 not checked. [2018-09-18 12:08:38,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:08:38,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8, 6, 5] total 28 [2018-09-18 12:08:38,640 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:08:38,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-18 12:08:38,642 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-18 12:08:38,642 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2018-09-18 12:08:38,642 INFO L87 Difference]: Start difference. First operand 16424 states and 17093 transitions. Second operand 19 states. [2018-09-18 12:08:54,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:08:54,658 INFO L93 Difference]: Finished difference Result 30787 states and 32079 transitions. [2018-09-18 12:08:54,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-18 12:08:54,658 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1560 [2018-09-18 12:08:54,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:08:54,681 INFO L225 Difference]: With dead ends: 30787 [2018-09-18 12:08:54,682 INFO L226 Difference]: Without dead ends: 16427 [2018-09-18 12:08:54,693 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 [2018-09-18 12:08:54,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16427 states. [2018-09-18 12:08:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16427 to 15055. [2018-09-18 12:08:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15055 states. [2018-09-18 12:08:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15055 states to 15055 states and 15585 transitions. [2018-09-18 12:08:54,858 INFO L78 Accepts]: Start accepts. Automaton has 15055 states and 15585 transitions. Word has length 1560 [2018-09-18 12:08:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:08:54,858 INFO L480 AbstractCegarLoop]: Abstraction has 15055 states and 15585 transitions. [2018-09-18 12:08:54,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-18 12:08:54,859 INFO L276 IsEmpty]: Start isEmpty. Operand 15055 states and 15585 transitions. [2018-09-18 12:08:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2149 [2018-09-18 12:08:54,897 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:08:54,898 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] [2018-09-18 12:08:54,898 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:08:54,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1147225091, now seen corresponding path program 1 times [2018-09-18 12:08:54,899 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:08:54,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:54,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:08:54,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:08:54,900 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:08:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:08:56,163 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-18 12:08:56,574 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-18 12:09:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 1643 proven. 827 refuted. 0 times theorem prover too weak. 5914 trivial. 0 not checked. [2018-09-18 12:09:01,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:09:01,608 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 [2018-09-18 12:09:01,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:01,616 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:09:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:09:02,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:09:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 5452 proven. 2 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2018-09-18 12:09:04,137 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:09:09,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 1643 proven. 827 refuted. 0 times theorem prover too weak. 5914 trivial. 0 not checked. [2018-09-18 12:09:09,434 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:09:09,434 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 [2018-09-18 12:09:09,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:09,452 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:09:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:09:10,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:09:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 5452 proven. 2 refuted. 0 times theorem prover too weak. 2930 trivial. 0 not checked. [2018-09-18 12:09:13,976 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:09:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8384 backedges. 1643 proven. 827 refuted. 0 times theorem prover too weak. 5914 trivial. 0 not checked. [2018-09-18 12:09:20,826 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:09:20,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 7, 8] total 26 [2018-09-18 12:09:20,828 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:09:20,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 12:09:20,830 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 12:09:20,830 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2018-09-18 12:09:20,830 INFO L87 Difference]: Start difference. First operand 15055 states and 15585 transitions. Second operand 13 states. [2018-09-18 12:09:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:09:29,678 INFO L93 Difference]: Finished difference Result 27042 states and 28038 transitions. [2018-09-18 12:09:29,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-18 12:09:29,679 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 2148 [2018-09-18 12:09:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:09:29,713 INFO L225 Difference]: With dead ends: 27042 [2018-09-18 12:09:29,714 INFO L226 Difference]: Without dead ends: 15745 [2018-09-18 12:09:29,730 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8660 GetRequests, 8597 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=613, Invalid=3047, Unknown=0, NotChecked=0, Total=3660 [2018-09-18 12:09:29,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15745 states. [2018-09-18 12:09:29,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15745 to 15397. [2018-09-18 12:09:29,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15397 states. [2018-09-18 12:09:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15397 states to 15397 states and 15898 transitions. [2018-09-18 12:09:29,932 INFO L78 Accepts]: Start accepts. Automaton has 15397 states and 15898 transitions. Word has length 2148 [2018-09-18 12:09:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:09:29,933 INFO L480 AbstractCegarLoop]: Abstraction has 15397 states and 15898 transitions. [2018-09-18 12:09:29,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-18 12:09:29,933 INFO L276 IsEmpty]: Start isEmpty. Operand 15397 states and 15898 transitions. [2018-09-18 12:09:29,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2287 [2018-09-18 12:09:29,977 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:09:29,978 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] [2018-09-18 12:09:29,978 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:09:29,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1849978105, now seen corresponding path program 1 times [2018-09-18 12:09:29,979 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:09:29,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:29,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:29,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:09:29,980 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:09:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:09:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9630 backedges. 1528 proven. 6078 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2018-09-18 12:09:40,904 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:09:40,904 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 [2018-09-18 12:09:40,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:40,912 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:09:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:09:41,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:09:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9630 backedges. 1412 proven. 56 refuted. 0 times theorem prover too weak. 8162 trivial. 0 not checked. [2018-09-18 12:09:44,042 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:09:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 9630 backedges. 1466 proven. 2 refuted. 0 times theorem prover too weak. 8162 trivial. 0 not checked. [2018-09-18 12:09:47,083 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:09:47,083 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 [2018-09-18 12:09:47,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:09:47,100 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:09:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:09:48,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:09:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9630 backedges. 1412 proven. 56 refuted. 0 times theorem prover too weak. 8162 trivial. 0 not checked. [2018-09-18 12:09:51,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:09:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9630 backedges. 1466 proven. 2 refuted. 0 times theorem prover too weak. 8162 trivial. 0 not checked. [2018-09-18 12:09:53,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:09:53,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 6, 6, 6, 6] total 32 [2018-09-18 12:09:53,201 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:09:53,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-18 12:09:53,204 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-18 12:09:53,204 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2018-09-18 12:09:53,204 INFO L87 Difference]: Start difference. First operand 15397 states and 15898 transitions. Second operand 28 states. [2018-09-18 12:09:57,032 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 Received shutdown request... [2018-09-18 12:09:58,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-18 12:09:58,916 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:09:58,923 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:09:58,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:09:58 BoogieIcfgContainer [2018-09-18 12:09:58,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:09:58,924 INFO L168 Benchmark]: Toolchain (without parser) took 230710.22 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-09-18 12:09:58,925 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:09:58,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1397.89 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:58,926 INFO L168 Benchmark]: Boogie Procedure Inliner took 428.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -882.9 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:58,926 INFO L168 Benchmark]: Boogie Preprocessor took 175.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:58,927 INFO L168 Benchmark]: RCFGBuilder took 5873.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 242.5 MB). Peak memory consumption was 242.5 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:58,928 INFO L168 Benchmark]: TraceAbstraction took 222827.57 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 831.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:09:58,932 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1397.89 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 428.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -882.9 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 175.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5873.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 242.5 MB). Peak memory consumption was 242.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222827.57 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 831.6 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 constructing difference of abstraction (15397states) and FLOYD_HOARE automaton (currently 14 states, 28 states before enhancement), while ReachableStatesComputation was computing reachable states (1586 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 222.7s OverallTime, 17 OverallIterations, 13 TraceHistogramMax, 100.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1672 SDtfs, 39125 SDslu, 3125 SDs, 0 SdLazy, 69990 SolverSat, 8052 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50218 GetRequests, 49791 SyntacticMatches, 64 SemanticMatches, 363 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3852 ImplicationChecksByTransitivity, 20.4s 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: 3.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 4799 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 9.6s SatisfiabilityAnalysisTime, 84.4s InterpolantComputationTime, 40527 NumberOfCodeBlocks, 40527 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 65357 ConstructedInterpolants, 128 QuantifiedInterpolants, 373384868 SizeOfPredicates, 41 NumberOfNonLiveVariables, 32345 ConjunctsInSsa, 255 ConjunctsInUnsatCore, 55 InterpolantComputations, 10 PerfectInterpolantSequences, 172141/193392 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-0-2018-09-18_12-09-58-945.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-0-2018-09-18_12-09-58-945.csv Completed graceful shutdown