java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:38:28,152 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:38:28,154 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:38:28,166 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:38:28,166 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:38:28,167 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:38:28,169 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:38:28,170 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:38:28,172 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:38:28,173 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:38:28,177 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:38:28,177 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:38:28,179 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:38:28,180 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:38:28,181 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:38:28,182 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:38:28,183 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:38:28,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:38:28,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:38:28,188 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:38:28,189 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:38:28,190 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:38:28,192 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:38:28,193 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:38:28,193 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:38:28,194 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:38:28,195 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:38:28,195 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:38:28,196 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:38:28,197 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:38:28,197 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:38:28,198 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 08:38:28,201 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:38:28,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:38:28,216 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:38:28,217 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:38:28,217 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:38:28,217 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:38:28,217 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:38:28,218 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:38:28,218 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:38:28,218 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:38:28,218 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:38:28,218 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:38:28,218 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:38:28,219 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:38:28,219 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:38:28,220 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:38:28,220 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:38:28,220 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:38:28,220 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:38:28,220 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:38:28,221 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:38:28,221 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:38:28,221 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:38:28,221 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:38:28,221 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:38:28,221 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:38:28,222 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:38:28,222 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:38:28,222 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:38:28,222 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:38:28,222 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:38:28,223 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:38:28,223 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:38:28,223 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:38:28,223 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:38:28,223 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:38:28,224 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:38:28,274 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:38:28,289 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:38:28,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:38:28,295 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:38:28,296 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:38:28,297 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-10-27 08:38:28,364 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fc1f8ed05/0461dc9ab282419bb20c0e190d58bd4b/FLAGcccff913e [2018-10-27 08:38:29,080 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:38:29,081 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-10-27 08:38:29,102 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fc1f8ed05/0461dc9ab282419bb20c0e190d58bd4b/FLAGcccff913e [2018-10-27 08:38:29,118 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fc1f8ed05/0461dc9ab282419bb20c0e190d58bd4b [2018-10-27 08:38:29,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:38:29,131 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:38:29,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:38:29,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:38:29,136 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:38:29,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:38:29" (1/1) ... [2018-10-27 08:38:29,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ad132a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:29, skipping insertion in model container [2018-10-27 08:38:29,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:38:29" (1/1) ... [2018-10-27 08:38:29,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:38:29,257 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:38:30,239 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:38:30,244 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:38:30,726 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:38:30,750 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:38:30,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30 WrapperNode [2018-10-27 08:38:30,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:38:30,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:38:30,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:38:30,753 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:38:30,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... [2018-10-27 08:38:30,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... [2018-10-27 08:38:31,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:38:31,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:38:31,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:38:31,236 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:38:31,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... [2018-10-27 08:38:31,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... [2018-10-27 08:38:31,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... [2018-10-27 08:38:31,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... [2018-10-27 08:38:31,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... [2018-10-27 08:38:31,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... [2018-10-27 08:38:31,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... [2018-10-27 08:38:31,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:38:31,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:38:31,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:38:31,511 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:38:31,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:38:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:38:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:38:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:38:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:38:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:38:31,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:38:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:38:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:38:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:38:31,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:38:43,422 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:38:43,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:38:43 BoogieIcfgContainer [2018-10-27 08:38:43,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:38:43,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:38:43,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:38:43,428 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:38:43,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:38:29" (1/3) ... [2018-10-27 08:38:43,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d076a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:38:43, skipping insertion in model container [2018-10-27 08:38:43,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:38:30" (2/3) ... [2018-10-27 08:38:43,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d076a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:38:43, skipping insertion in model container [2018-10-27 08:38:43,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:38:43" (3/3) ... [2018-10-27 08:38:43,432 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58_true-unreach-call.c [2018-10-27 08:38:43,441 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:38:43,451 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:38:43,469 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:38:43,512 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:38:43,512 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:38:43,513 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:38:43,513 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:38:43,513 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:38:43,513 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:38:43,513 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:38:43,513 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:38:43,550 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 08:38:43,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-27 08:38:43,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:38:43,561 INFO L375 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] [2018-10-27 08:38:43,563 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:38:43,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:38:43,569 INFO L82 PathProgramCache]: Analyzing trace with hash -567488676, now seen corresponding path program 1 times [2018-10-27 08:38:43,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:38:43,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:43,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:38:43,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:43,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:38:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:38:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:38:44,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:38:44,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:38:44,103 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:38:44,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:38:44,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:38:44,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:38:44,130 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 08:38:56,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:38:56,072 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-10-27 08:38:56,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:38:56,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-27 08:38:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:38:56,109 INFO L225 Difference]: With dead ends: 2162 [2018-10-27 08:38:56,109 INFO L226 Difference]: Without dead ends: 1552 [2018-10-27 08:38:56,121 INFO L605 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 [2018-10-27 08:38:56,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-10-27 08:38:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-10-27 08:38:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-10-27 08:38:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-10-27 08:38:56,282 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 52 [2018-10-27 08:38:56,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:38:56,283 INFO L481 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-10-27 08:38:56,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:38:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-10-27 08:38:56,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-27 08:38:56,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:38:56,294 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:38:56,294 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:38:56,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:38:56,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1938169354, now seen corresponding path program 1 times [2018-10-27 08:38:56,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:38:56,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:56,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:38:56,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:56,296 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:38:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:38:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:38:56,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:38:56,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:38:56,640 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:38:56,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:38:56,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:38:56,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:38:56,643 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-10-27 08:39:18,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:18,003 INFO L93 Difference]: Finished difference Result 5786 states and 10682 transitions. [2018-10-27 08:39:18,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:39:18,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-27 08:39:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:18,038 INFO L225 Difference]: With dead ends: 5786 [2018-10-27 08:39:18,038 INFO L226 Difference]: Without dead ends: 4267 [2018-10-27 08:39:18,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:39:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-10-27 08:39:18,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4243. [2018-10-27 08:39:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4243 states. [2018-10-27 08:39:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 6361 transitions. [2018-10-27 08:39:18,203 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 6361 transitions. Word has length 131 [2018-10-27 08:39:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:18,204 INFO L481 AbstractCegarLoop]: Abstraction has 4243 states and 6361 transitions. [2018-10-27 08:39:18,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:39:18,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 6361 transitions. [2018-10-27 08:39:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 08:39:18,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:18,208 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:39:18,209 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:18,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:18,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1881840966, now seen corresponding path program 1 times [2018-10-27 08:39:18,209 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:18,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:18,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:18,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:18,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:18,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:39:18,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:39:18,406 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:18,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:39:18,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:39:18,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:39:18,407 INFO L87 Difference]: Start difference. First operand 4243 states and 6361 transitions. Second operand 6 states. [2018-10-27 08:39:25,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:25,471 INFO L93 Difference]: Finished difference Result 12712 states and 20702 transitions. [2018-10-27 08:39:25,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:39:25,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-27 08:39:25,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:25,539 INFO L225 Difference]: With dead ends: 12712 [2018-10-27 08:39:25,539 INFO L226 Difference]: Without dead ends: 8475 [2018-10-27 08:39:25,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:39:25,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8475 states. [2018-10-27 08:39:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8475 to 8390. [2018-10-27 08:39:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8390 states. [2018-10-27 08:39:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 12580 transitions. [2018-10-27 08:39:25,847 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 12580 transitions. Word has length 132 [2018-10-27 08:39:25,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:25,847 INFO L481 AbstractCegarLoop]: Abstraction has 8390 states and 12580 transitions. [2018-10-27 08:39:25,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:39:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 12580 transitions. [2018-10-27 08:39:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-27 08:39:25,855 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:25,855 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:39:25,855 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:25,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:25,856 INFO L82 PathProgramCache]: Analyzing trace with hash -502912620, now seen corresponding path program 1 times [2018-10-27 08:39:25,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:25,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:25,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:25,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:25,858 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:26,250 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:39:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 08:39:26,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:39:26,384 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:39:26,385 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-10-27 08:39:26,387 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:39:26,438 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:39:26,439 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:39:27,430 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:39:27,431 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 08:39:27,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:27,479 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:39:27,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:39:27,479 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:39:27,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:27,495 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:39:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:27,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:39:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:28,145 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:39:28,309 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 08:39:28,412 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 08:39:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:39:28,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:39:28,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:39:28,745 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:39:28,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:39:28,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:39:28,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:39:28,746 INFO L87 Difference]: Start difference. First operand 8390 states and 12580 transitions. Second operand 9 states. [2018-10-27 08:39:42,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:42,987 INFO L93 Difference]: Finished difference Result 20876 states and 31706 transitions. [2018-10-27 08:39:42,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 08:39:42,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2018-10-27 08:39:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:43,089 INFO L225 Difference]: With dead ends: 20876 [2018-10-27 08:39:43,090 INFO L226 Difference]: Without dead ends: 12457 [2018-10-27 08:39:43,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 410 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:39:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2018-10-27 08:39:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 12432. [2018-10-27 08:39:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12432 states. [2018-10-27 08:39:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12432 states to 12432 states and 15995 transitions. [2018-10-27 08:39:43,553 INFO L78 Accepts]: Start accepts. Automaton has 12432 states and 15995 transitions. Word has length 206 [2018-10-27 08:39:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:43,553 INFO L481 AbstractCegarLoop]: Abstraction has 12432 states and 15995 transitions. [2018-10-27 08:39:43,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:39:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 12432 states and 15995 transitions. [2018-10-27 08:39:43,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-27 08:39:43,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:43,562 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:39:43,562 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:43,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1533263748, now seen corresponding path program 1 times [2018-10-27 08:39:43,563 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:43,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:43,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:43,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:43,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-27 08:39:43,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:39:43,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:39:43,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:43,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:39:43,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:39:43,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:39:43,965 INFO L87 Difference]: Start difference. First operand 12432 states and 15995 transitions. Second operand 4 states. [2018-10-27 08:39:52,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:52,465 INFO L93 Difference]: Finished difference Result 32880 states and 45420 transitions. [2018-10-27 08:39:52,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:39:52,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2018-10-27 08:39:52,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:52,532 INFO L225 Difference]: With dead ends: 32880 [2018-10-27 08:39:52,532 INFO L226 Difference]: Without dead ends: 16396 [2018-10-27 08:39:52,617 INFO L605 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 [2018-10-27 08:39:52,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16396 states. [2018-10-27 08:39:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16396 to 13694. [2018-10-27 08:39:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13694 states. [2018-10-27 08:39:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13694 states to 13694 states and 16790 transitions. [2018-10-27 08:39:52,941 INFO L78 Accepts]: Start accepts. Automaton has 13694 states and 16790 transitions. Word has length 219 [2018-10-27 08:39:52,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:52,941 INFO L481 AbstractCegarLoop]: Abstraction has 13694 states and 16790 transitions. [2018-10-27 08:39:52,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:39:52,942 INFO L276 IsEmpty]: Start isEmpty. Operand 13694 states and 16790 transitions. [2018-10-27 08:39:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-27 08:39:52,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:52,955 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:39:52,955 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:52,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:52,955 INFO L82 PathProgramCache]: Analyzing trace with hash -562860899, now seen corresponding path program 1 times [2018-10-27 08:39:52,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:52,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:52,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:52,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:52,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:53,397 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:39:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 118 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 08:39:54,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:39:54,294 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:39:54,294 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-10-27 08:39:54,297 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:39:54,309 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:39:54,309 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:39:55,171 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:39:55,171 INFO L272 AbstractInterpreter]: Visited 200 different actions 399 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:39:55,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:55,209 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:39:55,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:39:55,210 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:39:55,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:55,232 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:39:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:39:55,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:39:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:39:55,784 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:39:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:39:56,371 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:39:56,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-27 08:39:56,372 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:39:56,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:39:56,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:39:56,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:39:56,374 INFO L87 Difference]: Start difference. First operand 13694 states and 16790 transitions. Second operand 3 states. [2018-10-27 08:39:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:39:59,488 INFO L93 Difference]: Finished difference Result 27816 states and 34118 transitions. [2018-10-27 08:39:59,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:39:59,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2018-10-27 08:39:59,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:39:59,540 INFO L225 Difference]: With dead ends: 27816 [2018-10-27 08:39:59,540 INFO L226 Difference]: Without dead ends: 14128 [2018-10-27 08:39:59,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 662 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:39:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14128 states. [2018-10-27 08:39:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14128 to 13694. [2018-10-27 08:39:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13694 states. [2018-10-27 08:39:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13694 states to 13694 states and 16458 transitions. [2018-10-27 08:39:59,834 INFO L78 Accepts]: Start accepts. Automaton has 13694 states and 16458 transitions. Word has length 331 [2018-10-27 08:39:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:39:59,835 INFO L481 AbstractCegarLoop]: Abstraction has 13694 states and 16458 transitions. [2018-10-27 08:39:59,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:39:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13694 states and 16458 transitions. [2018-10-27 08:39:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-10-27 08:39:59,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:59,850 INFO L375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:39:59,851 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:59,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:59,851 INFO L82 PathProgramCache]: Analyzing trace with hash 897107937, now seen corresponding path program 1 times [2018-10-27 08:39:59,851 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:59,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:59,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:59,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:59,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-27 08:40:00,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:00,580 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:00,580 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 357 with the following transitions: [2018-10-27 08:40:00,581 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1474], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:40:00,587 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:00,588 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:01,080 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:40:01,080 INFO L272 AbstractInterpreter]: Visited 139 different actions 280 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:40:01,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:01,120 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:40:01,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:01,121 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:40:01,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:01,134 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:40:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:01,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:40:01,488 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-27 08:40:01,488 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:40:01,649 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 08:40:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-27 08:40:02,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:40:02,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-27 08:40:02,778 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:40:02,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 08:40:02,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 08:40:02,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:40:02,781 INFO L87 Difference]: Start difference. First operand 13694 states and 16458 transitions. Second operand 7 states. [2018-10-27 08:40:19,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:19,153 INFO L93 Difference]: Finished difference Result 48888 states and 62705 transitions. [2018-10-27 08:40:19,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 08:40:19,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2018-10-27 08:40:19,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:19,282 INFO L225 Difference]: With dead ends: 48888 [2018-10-27 08:40:19,282 INFO L226 Difference]: Without dead ends: 32519 [2018-10-27 08:40:19,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 715 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:40:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32519 states. [2018-10-27 08:40:19,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32519 to 29313. [2018-10-27 08:40:19,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29313 states. [2018-10-27 08:40:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29313 states to 29313 states and 35260 transitions. [2018-10-27 08:40:19,929 INFO L78 Accepts]: Start accepts. Automaton has 29313 states and 35260 transitions. Word has length 356 [2018-10-27 08:40:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:19,930 INFO L481 AbstractCegarLoop]: Abstraction has 29313 states and 35260 transitions. [2018-10-27 08:40:19,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 08:40:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 29313 states and 35260 transitions. [2018-10-27 08:40:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-10-27 08:40:19,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:19,946 INFO L375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:19,947 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:19,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:19,947 INFO L82 PathProgramCache]: Analyzing trace with hash -337293599, now seen corresponding path program 1 times [2018-10-27 08:40:19,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:19,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:19,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:19,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:19,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-10-27 08:40:20,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:20,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:40:20,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:20,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:40:20,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:40:20,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:20,638 INFO L87 Difference]: Start difference. First operand 29313 states and 35260 transitions. Second operand 4 states. [2018-10-27 08:40:27,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:27,077 INFO L93 Difference]: Finished difference Result 77841 states and 94657 transitions. [2018-10-27 08:40:27,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:40:27,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 379 [2018-10-27 08:40:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:27,229 INFO L225 Difference]: With dead ends: 77841 [2018-10-27 08:40:27,229 INFO L226 Difference]: Without dead ends: 40473 [2018-10-27 08:40:27,309 INFO L605 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 [2018-10-27 08:40:27,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40473 states. [2018-10-27 08:40:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40473 to 36966. [2018-10-27 08:40:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36966 states. [2018-10-27 08:40:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36966 states to 36966 states and 43879 transitions. [2018-10-27 08:40:28,026 INFO L78 Accepts]: Start accepts. Automaton has 36966 states and 43879 transitions. Word has length 379 [2018-10-27 08:40:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:28,027 INFO L481 AbstractCegarLoop]: Abstraction has 36966 states and 43879 transitions. [2018-10-27 08:40:28,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:40:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 36966 states and 43879 transitions. [2018-10-27 08:40:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2018-10-27 08:40:28,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:28,073 INFO L375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:28,073 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:28,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:28,074 INFO L82 PathProgramCache]: Analyzing trace with hash 464321774, now seen corresponding path program 1 times [2018-10-27 08:40:28,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:28,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:28,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:28,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:28,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 22 proven. 134 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2018-10-27 08:40:29,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:29,311 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:29,311 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 546 with the following transitions: [2018-10-27 08:40:29,312 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [153], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:40:29,320 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:29,320 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:30,511 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:40:30,512 INFO L272 AbstractInterpreter]: Visited 335 different actions 669 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-27 08:40:30,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:30,520 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:40:30,520 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:30,520 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:40:30,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:30,529 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:40:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:30,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:40:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 176 proven. 134 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 08:40:32,572 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:40:34,093 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2018-10-27 08:40:34,242 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-10-27 08:40:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 92 proven. 291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:35,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:40:35,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 13] total 30 [2018-10-27 08:40:35,684 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:40:35,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 08:40:35,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 08:40:35,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=655, Unknown=0, NotChecked=0, Total=870 [2018-10-27 08:40:35,687 INFO L87 Difference]: Start difference. First operand 36966 states and 43879 transitions. Second operand 20 states. [2018-10-27 08:41:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:41:16,525 INFO L93 Difference]: Finished difference Result 129609 states and 164344 transitions. [2018-10-27 08:41:16,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-27 08:41:16,526 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 545 [2018-10-27 08:41:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:41:16,925 INFO L225 Difference]: With dead ends: 129609 [2018-10-27 08:41:16,925 INFO L226 Difference]: Without dead ends: 92159 [2018-10-27 08:41:16,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1149 GetRequests, 1075 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1592 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1263, Invalid=3993, Unknown=0, NotChecked=0, Total=5256 [2018-10-27 08:41:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92159 states. [2018-10-27 08:41:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92159 to 83258. [2018-10-27 08:41:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83258 states. [2018-10-27 08:41:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83258 states to 83258 states and 106706 transitions. [2018-10-27 08:41:19,157 INFO L78 Accepts]: Start accepts. Automaton has 83258 states and 106706 transitions. Word has length 545 [2018-10-27 08:41:19,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:41:19,158 INFO L481 AbstractCegarLoop]: Abstraction has 83258 states and 106706 transitions. [2018-10-27 08:41:19,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-27 08:41:19,159 INFO L276 IsEmpty]: Start isEmpty. Operand 83258 states and 106706 transitions. [2018-10-27 08:41:19,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2018-10-27 08:41:19,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:41:19,278 INFO L375 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:41:19,278 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:41:19,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:41:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash 852935569, now seen corresponding path program 1 times [2018-10-27 08:41:19,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:41:19,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:41:19,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:41:19,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:41:19,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:41:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:41:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-10-27 08:41:19,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:41:19,924 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:41:19,925 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 693 with the following transitions: [2018-10-27 08:41:19,925 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [328], [331], [335], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:41:19,934 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:41:19,934 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:41:22,625 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:41:22,626 INFO L272 AbstractInterpreter]: Visited 373 different actions 745 times. Merged at 9 different actions 16 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-27 08:41:22,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:41:22,663 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:41:22,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:41:22,663 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:41:22,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:41:22,674 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:41:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:41:22,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:41:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2018-10-27 08:41:23,139 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:41:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-10-27 08:41:23,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 08:41:23,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-10-27 08:41:23,468 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:41:23,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:41:23,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:41:23,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:41:23,469 INFO L87 Difference]: Start difference. First operand 83258 states and 106706 transitions. Second operand 3 states. [2018-10-27 08:41:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:41:27,803 INFO L93 Difference]: Finished difference Result 170791 states and 220182 transitions. [2018-10-27 08:41:27,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:41:27,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 692 [2018-10-27 08:41:27,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:41:28,119 INFO L225 Difference]: With dead ends: 170791 [2018-10-27 08:41:28,119 INFO L226 Difference]: Without dead ends: 89293 [2018-10-27 08:41:28,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1386 GetRequests, 1385 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:41:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89293 states. [2018-10-27 08:41:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89293 to 89283. [2018-10-27 08:41:30,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89283 states. [2018-10-27 08:41:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89283 states to 89283 states and 112939 transitions. [2018-10-27 08:41:30,410 INFO L78 Accepts]: Start accepts. Automaton has 89283 states and 112939 transitions. Word has length 692 [2018-10-27 08:41:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:41:30,414 INFO L481 AbstractCegarLoop]: Abstraction has 89283 states and 112939 transitions. [2018-10-27 08:41:30,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:41:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 89283 states and 112939 transitions. [2018-10-27 08:41:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2018-10-27 08:41:30,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:41:30,503 INFO L375 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:41:30,503 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:41:30,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:41:30,504 INFO L82 PathProgramCache]: Analyzing trace with hash -234565824, now seen corresponding path program 1 times [2018-10-27 08:41:30,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:41:30,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:41:30,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:41:30,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:41:30,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:41:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:41:31,528 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 08:41:31,728 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-27 08:41:32,020 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-10-27 08:41:32,441 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-27 08:41:32,764 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 6 [2018-10-27 08:41:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 192 proven. 349 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-27 08:41:34,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:41:34,034 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:41:34,035 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 719 with the following transitions: [2018-10-27 08:41:34,035 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [297], [301], [305], [309], [313], [317], [321], [325], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [383], [387], [391], [395], [399], [403], [407], [411], [415], [426], [430], [434], [445], [449], [453], [464], [475], [479], [483], [487], [491], [495], [499], [503], [507], [511], [515], [519], [530], [534], [538], [549], [553], [557], [561], [565], [569], [573], [584], [587], [592], [594], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1243], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:41:34,045 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:41:34,045 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:41:35,073 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:41:35,073 INFO L272 AbstractInterpreter]: Visited 422 different actions 842 times. Merged at 9 different actions 15 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-27 08:41:35,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:41:35,102 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:41:35,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:41:35,102 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:41:35,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:41:35,114 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:41:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:41:35,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:41:42,652 WARN L179 SmtUtils]: Spent 6.95 s on a formula simplification. DAG size of input: 792 DAG size of output: 43 [2018-10-27 08:41:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-27 08:41:44,093 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:41:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 424 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-27 08:41:46,091 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:41:46,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2018-10-27 08:41:46,092 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:41:46,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 08:41:46,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 08:41:46,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-10-27 08:41:46,094 INFO L87 Difference]: Start difference. First operand 89283 states and 112939 transitions. Second operand 14 states. [2018-10-27 08:41:59,161 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2018-10-27 08:42:05,928 WARN L179 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 66 DAG size of output: 60 Received shutdown request... [2018-10-27 08:42:17,101 WARN L187 SmtUtils]: Removed 4 from assertion stack [2018-10-27 08:42:17,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-27 08:42:17,102 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:42:17,108 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:42:17,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:42:17 BoogieIcfgContainer [2018-10-27 08:42:17,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:42:17,109 INFO L168 Benchmark]: Toolchain (without parser) took 227979.37 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 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 776.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:42:17,110 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:42:17,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1620.02 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 08:42:17,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 482.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -928.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:42:17,112 INFO L168 Benchmark]: Boogie Preprocessor took 274.37 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: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:42:17,113 INFO L168 Benchmark]: RCFGBuilder took 11912.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 466.5 MB). Peak memory consumption was 466.5 MB. Max. memory is 7.1 GB. [2018-10-27 08:42:17,114 INFO L168 Benchmark]: TraceAbstraction took 213684.37 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 276.0 MB. Max. memory is 7.1 GB. [2018-10-27 08:42:17,119 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1620.02 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 482.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -928.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 274.37 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: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11912.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 466.5 MB). Peak memory consumption was 466.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213684.37 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 276.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 143). Cancelled while BasicCegarLoop was constructing difference of abstraction (89283states) and FLOYD_HOARE automaton (currently 39 states, 14 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 213.6s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 167.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3913 SDtfs, 31356 SDslu, 3493 SDs, 0 SdLazy, 53034 SolverSat, 12038 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 137.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5906 GetRequests, 5719 SyntacticMatches, 15 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2227 ImplicationChecksByTransitivity, 21.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89283occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.5s AbstIntTime, 6 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 18921 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 26.8s InterpolantComputationTime, 6609 NumberOfCodeBlocks, 6609 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 9434 ConstructedInterpolants, 154 QuantifiedInterpolants, 17211692 SizeOfPredicates, 19 NumberOfNonLiveVariables, 4309 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 7229/8213 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown