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_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:34:18,094 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:34:18,097 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:34:18,113 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:34:18,113 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:34:18,114 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:34:18,116 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:34:18,117 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:34:18,119 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:34:18,120 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:34:18,121 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:34:18,121 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:34:18,122 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:34:18,123 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:34:18,124 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:34:18,125 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:34:18,126 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:34:18,128 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:34:18,130 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:34:18,131 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:34:18,133 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:34:18,134 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:34:18,136 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:34:18,137 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:34:18,137 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:34:18,138 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:34:18,139 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:34:18,140 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:34:18,141 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:34:18,142 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:34:18,142 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:34:18,143 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 08:34:18,146 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 08:34:18,162 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:34:18,162 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:34:18,165 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:34:18,165 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:34:18,165 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:34:18,165 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:34:18,166 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:34:18,166 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:34:18,166 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:34:18,166 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:34:18,166 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:34:18,166 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:34:18,167 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:34:18,167 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:34:18,167 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:34:18,168 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:34:18,168 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:34:18,169 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:34:18,169 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:34:18,169 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:34:18,169 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:34:18,169 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:34:18,170 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:34:18,170 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:34:18,170 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:34:18,170 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:34:18,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:34:18,172 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:34:18,172 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:34:18,172 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:34:18,173 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:34:18,173 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:34:18,173 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:34:18,173 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:34:18,173 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:34:18,174 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:34:18,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:34:18,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:34:18,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:34:18,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:34:18,268 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:34:18,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label29_true-unreach-call.c [2018-10-27 08:34:18,338 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dccfc27af/256a809d4ba048cdbdfb6f502fd37ddc/FLAG9acbec570 [2018-10-27 08:34:19,083 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:34:19,084 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label29_true-unreach-call.c [2018-10-27 08:34:19,104 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dccfc27af/256a809d4ba048cdbdfb6f502fd37ddc/FLAG9acbec570 [2018-10-27 08:34:19,119 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dccfc27af/256a809d4ba048cdbdfb6f502fd37ddc [2018-10-27 08:34:19,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:34:19,133 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:34:19,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:34:19,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:34:19,141 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:34:19,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:34:19" (1/1) ... [2018-10-27 08:34:19,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44de30fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:19, skipping insertion in model container [2018-10-27 08:34:19,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:34:19" (1/1) ... [2018-10-27 08:34:19,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:34:19,269 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:34:20,357 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:34:20,362 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:34:20,757 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:34:20,783 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:34:20,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20 WrapperNode [2018-10-27 08:34:20,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:34:20,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:34:20,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:34:20,785 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:34:20,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (1/1) ... [2018-10-27 08:34:20,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (1/1) ... [2018-10-27 08:34:21,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:34:21,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:34:21,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:34:21,243 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:34:21,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (1/1) ... [2018-10-27 08:34:21,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (1/1) ... [2018-10-27 08:34:21,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (1/1) ... [2018-10-27 08:34:21,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (1/1) ... [2018-10-27 08:34:21,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (1/1) ... [2018-10-27 08:34:21,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (1/1) ... [2018-10-27 08:34:21,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (1/1) ... [2018-10-27 08:34:21,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:34:21,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:34:21,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:34:21,496 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:34:21,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (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 08:34:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:34:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:34:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:34:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:34:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:34:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:34:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:34:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:34:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:34:21,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:34:34,322 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:34:34,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:34:34 BoogieIcfgContainer [2018-10-27 08:34:34,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:34:34,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:34:34,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:34:34,328 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:34:34,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:34:19" (1/3) ... [2018-10-27 08:34:34,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9233288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:34:34, skipping insertion in model container [2018-10-27 08:34:34,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:34:20" (2/3) ... [2018-10-27 08:34:34,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9233288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:34:34, skipping insertion in model container [2018-10-27 08:34:34,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:34:34" (3/3) ... [2018-10-27 08:34:34,332 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label29_true-unreach-call.c [2018-10-27 08:34:34,342 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:34:34,351 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:34:34,366 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:34:34,409 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:34:34,409 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:34:34,409 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:34:34,409 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:34:34,410 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:34:34,410 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:34:34,410 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:34:34,410 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:34:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 08:34:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-27 08:34:34,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:34:34,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:34:34,468 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:34:34,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:34:34,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1965894100, now seen corresponding path program 1 times [2018-10-27 08:34:34,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:34:34,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:34:34,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:34:34,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:34:34,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:34:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:34:35,102 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 08:34:35,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:34:35,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:34:35,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:34:35,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:34:35,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:34:35,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:34:35,133 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 08:34:44,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:34:44,688 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-27 08:34:44,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:34:44,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2018-10-27 08:34:44,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:34:44,725 INFO L225 Difference]: With dead ends: 2166 [2018-10-27 08:34:44,725 INFO L226 Difference]: Without dead ends: 1556 [2018-10-27 08:34:44,740 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 08:34:44,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-27 08:34:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-27 08:34:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-27 08:34:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-27 08:34:44,913 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 72 [2018-10-27 08:34:44,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:34:44,914 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-27 08:34:44,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:34:44,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-27 08:34:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-27 08:34:44,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:34:44,927 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, 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] [2018-10-27 08:34:44,931 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:34:44,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:34:44,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1274618542, now seen corresponding path program 1 times [2018-10-27 08:34:44,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:34:44,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:34:44,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:34:44,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:34:44,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:34:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:34:45,337 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:34:45,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:34:45,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:34:45,337 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:34:45,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:34:45,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:34:45,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:34:45,340 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-27 08:34:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:34:55,453 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-27 08:34:55,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:34:55,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-10-27 08:34:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:34:55,470 INFO L225 Difference]: With dead ends: 3059 [2018-10-27 08:34:55,471 INFO L226 Difference]: Without dead ends: 1997 [2018-10-27 08:34:55,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:34:55,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-27 08:34:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-27 08:34:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-27 08:34:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-27 08:34:55,540 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 148 [2018-10-27 08:34:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:34:55,540 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-27 08:34:55,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:34:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-27 08:34:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-27 08:34:55,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:34:55,546 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:34:55,546 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:34:55,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:34:55,546 INFO L82 PathProgramCache]: Analyzing trace with hash -73480886, now seen corresponding path program 1 times [2018-10-27 08:34:55,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:34:55,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:34:55,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:34:55,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:34:55,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:34:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:34:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:34:55,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:34:55,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:34:55,780 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:34:55,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:34:55,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:34:55,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:34:55,781 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-27 08:35:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:35:00,719 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-27 08:35:00,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:35:00,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-10-27 08:35:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:35:00,738 INFO L225 Difference]: With dead ends: 4880 [2018-10-27 08:35:00,738 INFO L226 Difference]: Without dead ends: 2911 [2018-10-27 08:35:00,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:35:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-27 08:35:00,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-27 08:35:00,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-27 08:35:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-27 08:35:00,844 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 152 [2018-10-27 08:35:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:35:00,845 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-27 08:35:00,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:35:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-27 08:35:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-27 08:35:00,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:35:00,849 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, 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] [2018-10-27 08:35:00,852 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:35:00,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:35:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash 363729319, now seen corresponding path program 1 times [2018-10-27 08:35:00,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:35:00,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:35:00,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:35:00,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:35:00,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:35:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:35:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:35:01,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:35:01,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:35:01,142 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:35:01,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:35:01,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:35:01,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:35:01,144 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-27 08:35:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:35:11,310 INFO L93 Difference]: Finished difference Result 6193 states and 8578 transitions. [2018-10-27 08:35:11,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:35:11,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-10-27 08:35:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:35:11,328 INFO L225 Difference]: With dead ends: 6193 [2018-10-27 08:35:11,328 INFO L226 Difference]: Without dead ends: 3319 [2018-10-27 08:35:11,340 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 08:35:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2018-10-27 08:35:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3319. [2018-10-27 08:35:11,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3319 states. [2018-10-27 08:35:11,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 4416 transitions. [2018-10-27 08:35:11,415 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 4416 transitions. Word has length 182 [2018-10-27 08:35:11,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:35:11,416 INFO L481 AbstractCegarLoop]: Abstraction has 3319 states and 4416 transitions. [2018-10-27 08:35:11,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:35:11,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 4416 transitions. [2018-10-27 08:35:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 08:35:11,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:35:11,421 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, 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, 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 08:35:11,421 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:35:11,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:35:11,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1344568352, now seen corresponding path program 1 times [2018-10-27 08:35:11,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:35:11,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:35:11,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:35:11,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:35:11,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:35:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:35:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 08:35:11,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:35:11,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:35:11,759 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:35:11,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:35:11,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:35:11,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:35:11,761 INFO L87 Difference]: Start difference. First operand 3319 states and 4416 transitions. Second operand 4 states. [2018-10-27 08:35:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:35:19,001 INFO L93 Difference]: Finished difference Result 11927 states and 16138 transitions. [2018-10-27 08:35:19,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:35:19,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2018-10-27 08:35:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:35:19,043 INFO L225 Difference]: With dead ends: 11927 [2018-10-27 08:35:19,044 INFO L226 Difference]: Without dead ends: 8614 [2018-10-27 08:35:19,060 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 08:35:19,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8614 states. [2018-10-27 08:35:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8614 to 8610. [2018-10-27 08:35:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8610 states. [2018-10-27 08:35:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8610 states to 8610 states and 10603 transitions. [2018-10-27 08:35:19,259 INFO L78 Accepts]: Start accepts. Automaton has 8610 states and 10603 transitions. Word has length 236 [2018-10-27 08:35:19,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:35:19,260 INFO L481 AbstractCegarLoop]: Abstraction has 8610 states and 10603 transitions. [2018-10-27 08:35:19,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:35:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 8610 states and 10603 transitions. [2018-10-27 08:35:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-27 08:35:19,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:35:19,270 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:35:19,270 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:35:19,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:35:19,270 INFO L82 PathProgramCache]: Analyzing trace with hash -522914045, now seen corresponding path program 1 times [2018-10-27 08:35:19,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:35:19,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:35:19,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:35:19,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:35:19,272 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:35:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:35:19,946 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-27 08:35:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 130 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:35:20,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:35:20,224 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:35:20,225 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-10-27 08:35:20,227 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], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1182], [1186], [1188], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:35:20,275 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:35:20,275 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:35:20,997 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:35:20,999 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 08:35:21,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:35:21,044 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:35:21,732 INFO L227 lantSequenceWeakener]: Weakened 250 states. On average, predicates are now at 75.87% of their original sizes. [2018-10-27 08:35:21,732 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:35:21,974 INFO L415 sIntCurrentIteration]: We unified 258 AI predicates to 258 [2018-10-27 08:35:21,974 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:35:21,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:35:21,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:35:21,976 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:35:21,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:35:21,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:35:21,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:35:21,979 INFO L87 Difference]: Start difference. First operand 8610 states and 10603 transitions. Second operand 6 states. [2018-10-27 08:37:59,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:37:59,273 INFO L93 Difference]: Finished difference Result 17650 states and 21668 transitions. [2018-10-27 08:37:59,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:37:59,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 259 [2018-10-27 08:37:59,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:37:59,307 INFO L225 Difference]: With dead ends: 17650 [2018-10-27 08:37:59,307 INFO L226 Difference]: Without dead ends: 9046 [2018-10-27 08:37:59,328 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 259 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:37:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9046 states. [2018-10-27 08:37:59,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9046 to 9044. [2018-10-27 08:37:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9044 states. [2018-10-27 08:37:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9044 states to 9044 states and 11048 transitions. [2018-10-27 08:37:59,513 INFO L78 Accepts]: Start accepts. Automaton has 9044 states and 11048 transitions. Word has length 259 [2018-10-27 08:37:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:37:59,513 INFO L481 AbstractCegarLoop]: Abstraction has 9044 states and 11048 transitions. [2018-10-27 08:37:59,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:37:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 9044 states and 11048 transitions. [2018-10-27 08:37:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-27 08:37:59,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:37:59,523 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:37:59,524 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:37:59,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:37:59,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1507360391, now seen corresponding path program 1 times [2018-10-27 08:37:59,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:37:59,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:37:59,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:37:59,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:37:59,526 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:37:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:37:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-27 08:37:59,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:37:59,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:37:59,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:37:59,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:37:59,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:37:59,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:37:59,900 INFO L87 Difference]: Start difference. First operand 9044 states and 11048 transitions. Second operand 4 states. [2018-10-27 08:38:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:38:08,849 INFO L93 Difference]: Finished difference Result 22967 states and 28564 transitions. [2018-10-27 08:38:08,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:38:08,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 302 [2018-10-27 08:38:08,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:38:08,906 INFO L225 Difference]: With dead ends: 22967 [2018-10-27 08:38:08,906 INFO L226 Difference]: Without dead ends: 14363 [2018-10-27 08:38:08,945 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 08:38:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14363 states. [2018-10-27 08:38:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14363 to 14351. [2018-10-27 08:38:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14351 states. [2018-10-27 08:38:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14351 states to 14351 states and 17220 transitions. [2018-10-27 08:38:09,204 INFO L78 Accepts]: Start accepts. Automaton has 14351 states and 17220 transitions. Word has length 302 [2018-10-27 08:38:09,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:38:09,205 INFO L481 AbstractCegarLoop]: Abstraction has 14351 states and 17220 transitions. [2018-10-27 08:38:09,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:38:09,205 INFO L276 IsEmpty]: Start isEmpty. Operand 14351 states and 17220 transitions. [2018-10-27 08:38:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-27 08:38:09,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:38:09,218 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, 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, 2, 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 08:38:09,219 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:38:09,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:38:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash -959165458, now seen corresponding path program 1 times [2018-10-27 08:38:09,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:38:09,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:09,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:38:09,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:38:09,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:38:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:38:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 205 proven. 142 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-27 08:38:09,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:38:09,785 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:38:09,786 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-27 08:38:09,786 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], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1166], [1174], [1182], [1186], [1188], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 08:38:09,792 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:38:09,793 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:38:10,795 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:38:10,796 INFO L272 AbstractInterpreter]: Visited 98 different actions 294 times. Merged at 8 different actions 23 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-27 08:38:10,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:38:10,811 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:38:10,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:38:10,811 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 08:38:10,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:38:10,823 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:38:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:38:10,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:38:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-10-27 08:38:11,573 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:38:12,689 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-27 08:38:12,817 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-27 08:38:13,093 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-10-27 08:38:13,698 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-10-27 08:38:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 205 proven. 211 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:38:14,336 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:38:14,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-10-27 08:38:14,337 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:38:14,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:38:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:38:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-10-27 08:38:14,339 INFO L87 Difference]: Start difference. First operand 14351 states and 17220 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 08:38:25,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-27 08:38:25,223 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:38:25,230 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:38:25,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:38:25 BoogieIcfgContainer [2018-10-27 08:38:25,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:38:25,231 INFO L168 Benchmark]: Toolchain (without parser) took 246099.73 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.1 GB). Peak memory consumption was 494.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:38:25,233 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 08:38:25,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1650.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 08:38:25,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 458.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 08:38:25,235 INFO L168 Benchmark]: Boogie Preprocessor took 252.38 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:38:25,236 INFO L168 Benchmark]: RCFGBuilder took 12828.60 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: 464.6 MB). Peak memory consumption was 464.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:38:25,237 INFO L168 Benchmark]: TraceAbstraction took 230905.37 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.8 GB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:38:25,242 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 1650.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 458.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.0 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 252.38 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12828.60 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: 464.6 MB). Peak memory consumption was 464.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230905.37 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.8 GB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 203]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 203). Cancelled while BasicCegarLoop was constructing difference of abstraction (14351states) and FLOYD_HOARE automaton (currently 13 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (8593 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 230.8s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 219.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3862 SDtfs, 10560 SDslu, 2444 SDs, 0 SdLazy, 22412 SolverSat, 3815 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 182.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 943 GetRequests, 892 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14351occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.8s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.998005203705406 AbsIntWeakeningRatio, 0.10465116279069768 AbsIntAvgWeakeningVarsNumRemoved, 17.51937984496124 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 559 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 1973 NumberOfCodeBlocks, 1973 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2274 ConstructedInterpolants, 93 QuantifiedInterpolants, 2515315 SizeOfPredicates, 2 NumberOfNonLiveVariables, 544 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 1662/2089 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown