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/Problem16_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:18:04,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:18:04,225 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:18:04,241 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:18:04,241 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:18:04,242 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:18:04,244 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:18:04,247 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:18:04,250 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:18:04,251 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:18:04,252 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:18:04,253 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:18:04,254 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:18:04,256 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:18:04,259 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:18:04,260 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:18:04,261 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:18:04,264 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:18:04,273 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:18:04,277 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:18:04,278 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:18:04,282 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:18:04,284 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:18:04,284 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:18:04,284 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:18:04,288 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:18:04,289 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:18:04,292 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:18:04,292 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:18:04,293 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:18:04,294 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:18:04,294 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 08:18:04,299 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 08:18:04,331 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:18:04,332 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:18:04,332 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:18:04,333 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:18:04,333 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:18:04,333 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:18:04,333 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:18:04,333 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:18:04,334 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:18:04,334 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:18:04,334 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:18:04,334 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:18:04,334 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:18:04,335 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:18:04,335 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:18:04,336 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:18:04,336 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:18:04,336 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:18:04,336 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:18:04,336 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:18:04,336 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:18:04,337 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:18:04,337 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:18:04,337 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:18:04,337 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:18:04,337 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:18:04,338 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:18:04,338 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:18:04,338 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:18:04,338 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:18:04,338 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:18:04,339 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:18:04,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:18:04,339 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:18:04,339 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:18:04,339 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:18:04,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:18:04,405 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:18:04,410 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:18:04,411 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:18:04,412 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:18:04,414 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c [2018-10-27 08:18:04,481 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fd8e2cc76/2132167902fd484eb50bc4ef0d38a640/FLAG2662ba868 [2018-10-27 08:18:05,143 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:18:05,144 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label02_true-unreach-call.c [2018-10-27 08:18:05,163 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fd8e2cc76/2132167902fd484eb50bc4ef0d38a640/FLAG2662ba868 [2018-10-27 08:18:05,180 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fd8e2cc76/2132167902fd484eb50bc4ef0d38a640 [2018-10-27 08:18:05,191 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:18:05,193 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:18:05,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:18:05,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:18:05,198 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:18:05,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a693f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05, skipping insertion in model container [2018-10-27 08:18:05,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:18:05,304 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:18:06,073 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:18:06,078 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:18:06,325 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:18:06,347 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:18:06,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06 WrapperNode [2018-10-27 08:18:06,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:18:06,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:18:06,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:18:06,350 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:18:06,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (1/1) ... [2018-10-27 08:18:06,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (1/1) ... [2018-10-27 08:18:06,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:18:06,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:18:06,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:18:06,662 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:18:06,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (1/1) ... [2018-10-27 08:18:06,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (1/1) ... [2018-10-27 08:18:06,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (1/1) ... [2018-10-27 08:18:06,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (1/1) ... [2018-10-27 08:18:06,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (1/1) ... [2018-10-27 08:18:06,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (1/1) ... [2018-10-27 08:18:06,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (1/1) ... [2018-10-27 08:18:06,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:18:06,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:18:06,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:18:06,841 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:18:06,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (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 08:18:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:18:06,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:18:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:18:06,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:18:06,921 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:18:06,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:18:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:18:06,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:18:06,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:18:06,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:18:12,715 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:18:12,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:18:12 BoogieIcfgContainer [2018-10-27 08:18:12,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:18:12,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:18:12,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:18:12,720 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:18:12,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:18:05" (1/3) ... [2018-10-27 08:18:12,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365a976e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:18:12, skipping insertion in model container [2018-10-27 08:18:12,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:06" (2/3) ... [2018-10-27 08:18:12,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@365a976e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:18:12, skipping insertion in model container [2018-10-27 08:18:12,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:18:12" (3/3) ... [2018-10-27 08:18:12,724 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label02_true-unreach-call.c [2018-10-27 08:18:12,734 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:18:12,743 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:18:12,761 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:18:12,802 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:18:12,802 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:18:12,803 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:18:12,803 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:18:12,803 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:18:12,803 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:18:12,803 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:18:12,803 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:18:12,836 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 08:18:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-27 08:18:12,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:12,849 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] [2018-10-27 08:18:12,851 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:12,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:12,858 INFO L82 PathProgramCache]: Analyzing trace with hash -730804356, now seen corresponding path program 1 times [2018-10-27 08:18:12,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:12,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:12,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:12,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:12,915 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:13,405 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 08:18:13,484 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 08:18:13,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:13,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:18:13,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:13,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:18:13,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:18:13,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:18:13,514 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 08:18:21,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:21,677 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 08:18:21,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:18:21,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-10-27 08:18:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:21,726 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 08:18:21,726 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 08:18:21,741 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 08:18:21,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 08:18:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1097. [2018-10-27 08:18:21,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2018-10-27 08:18:21,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1954 transitions. [2018-10-27 08:18:21,897 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1954 transitions. Word has length 68 [2018-10-27 08:18:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:21,898 INFO L481 AbstractCegarLoop]: Abstraction has 1097 states and 1954 transitions. [2018-10-27 08:18:21,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:18:21,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1954 transitions. [2018-10-27 08:18:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 08:18:21,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:21,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:18:21,918 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:21,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:21,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1744489539, now seen corresponding path program 1 times [2018-10-27 08:18:21,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:21,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:21,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:21,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:21,921 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:18:22,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:22,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:18:22,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:22,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:18:22,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:18:22,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:18:22,491 INFO L87 Difference]: Start difference. First operand 1097 states and 1954 transitions. Second operand 6 states. [2018-10-27 08:18:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:27,999 INFO L93 Difference]: Finished difference Result 3259 states and 5952 transitions. [2018-10-27 08:18:28,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:18:28,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-27 08:18:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:28,026 INFO L225 Difference]: With dead ends: 3259 [2018-10-27 08:18:28,027 INFO L226 Difference]: Without dead ends: 2168 [2018-10-27 08:18:28,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:18:28,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2168 states. [2018-10-27 08:18:28,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2168 to 2142. [2018-10-27 08:18:28,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2142 states. [2018-10-27 08:18:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3739 transitions. [2018-10-27 08:18:28,134 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3739 transitions. Word has length 139 [2018-10-27 08:18:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:28,135 INFO L481 AbstractCegarLoop]: Abstraction has 2142 states and 3739 transitions. [2018-10-27 08:18:28,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:18:28,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3739 transitions. [2018-10-27 08:18:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-27 08:18:28,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:28,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:28,144 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:28,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:28,145 INFO L82 PathProgramCache]: Analyzing trace with hash -990959541, now seen corresponding path program 1 times [2018-10-27 08:18:28,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:28,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:28,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:28,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:28,148 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:28,470 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:18:28,536 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:18:28,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:28,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:18:28,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:28,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:18:28,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:18:28,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:18:28,538 INFO L87 Difference]: Start difference. First operand 2142 states and 3739 transitions. Second operand 6 states. [2018-10-27 08:18:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:34,063 INFO L93 Difference]: Finished difference Result 7053 states and 12688 transitions. [2018-10-27 08:18:34,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:18:34,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-10-27 08:18:34,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:34,108 INFO L225 Difference]: With dead ends: 7053 [2018-10-27 08:18:34,108 INFO L226 Difference]: Without dead ends: 4917 [2018-10-27 08:18:34,132 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 08:18:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4917 states. [2018-10-27 08:18:34,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4917 to 4877. [2018-10-27 08:18:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2018-10-27 08:18:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7891 transitions. [2018-10-27 08:18:34,300 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7891 transitions. Word has length 167 [2018-10-27 08:18:34,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:34,301 INFO L481 AbstractCegarLoop]: Abstraction has 4877 states and 7891 transitions. [2018-10-27 08:18:34,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:18:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7891 transitions. [2018-10-27 08:18:34,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-27 08:18:34,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:34,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:34,305 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:34,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:34,306 INFO L82 PathProgramCache]: Analyzing trace with hash -964551673, now seen corresponding path program 1 times [2018-10-27 08:18:34,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:34,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:34,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:34,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:34,308 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:18:34,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:34,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:18:34,543 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:34,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:18:34,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:18:34,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:18:34,544 INFO L87 Difference]: Start difference. First operand 4877 states and 7891 transitions. Second operand 6 states. [2018-10-27 08:18:38,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:38,338 INFO L93 Difference]: Finished difference Result 11909 states and 19972 transitions. [2018-10-27 08:18:38,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:18:38,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-10-27 08:18:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:38,397 INFO L225 Difference]: With dead ends: 11909 [2018-10-27 08:18:38,397 INFO L226 Difference]: Without dead ends: 7038 [2018-10-27 08:18:38,428 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 08:18:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7038 states. [2018-10-27 08:18:38,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7038 to 6977. [2018-10-27 08:18:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-10-27 08:18:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9942 transitions. [2018-10-27 08:18:38,702 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9942 transitions. Word has length 185 [2018-10-27 08:18:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:38,702 INFO L481 AbstractCegarLoop]: Abstraction has 6977 states and 9942 transitions. [2018-10-27 08:18:38,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:18:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9942 transitions. [2018-10-27 08:18:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-27 08:18:38,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:38,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:38,712 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:38,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:38,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1679600594, now seen corresponding path program 1 times [2018-10-27 08:18:38,712 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:38,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:38,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:38,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:38,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:39,061 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:18:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:18:39,607 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:39,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:18:39,607 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:39,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:18:39,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:18:39,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:18:39,613 INFO L87 Difference]: Start difference. First operand 6977 states and 9942 transitions. Second operand 6 states. [2018-10-27 08:18:43,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:43,954 INFO L93 Difference]: Finished difference Result 17709 states and 25496 transitions. [2018-10-27 08:18:43,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:18:43,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 232 [2018-10-27 08:18:43,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:44,021 INFO L225 Difference]: With dead ends: 17709 [2018-10-27 08:18:44,022 INFO L226 Difference]: Without dead ends: 10738 [2018-10-27 08:18:44,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:18:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10738 states. [2018-10-27 08:18:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10738 to 10702. [2018-10-27 08:18:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10702 states. [2018-10-27 08:18:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10702 states to 10702 states and 14504 transitions. [2018-10-27 08:18:44,338 INFO L78 Accepts]: Start accepts. Automaton has 10702 states and 14504 transitions. Word has length 232 [2018-10-27 08:18:44,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:44,339 INFO L481 AbstractCegarLoop]: Abstraction has 10702 states and 14504 transitions. [2018-10-27 08:18:44,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:18:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 10702 states and 14504 transitions. [2018-10-27 08:18:44,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-27 08:18:44,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:44,346 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:18:44,346 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:44,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1670114349, now seen corresponding path program 1 times [2018-10-27 08:18:44,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:44,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:44,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:44,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:44,350 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-27 08:18:44,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:44,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:18:44,650 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:44,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:18:44,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:18:44,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:18:44,652 INFO L87 Difference]: Start difference. First operand 10702 states and 14504 transitions. Second operand 4 states. [2018-10-27 08:18:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:48,762 INFO L93 Difference]: Finished difference Result 27183 states and 37579 transitions. [2018-10-27 08:18:48,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:18:48,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2018-10-27 08:18:48,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:48,838 INFO L225 Difference]: With dead ends: 27183 [2018-10-27 08:18:48,838 INFO L226 Difference]: Without dead ends: 16487 [2018-10-27 08:18:48,883 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 08:18:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16487 states. [2018-10-27 08:18:49,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16487 to 16487. [2018-10-27 08:18:49,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16487 states. [2018-10-27 08:18:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16487 states to 16487 states and 21165 transitions. [2018-10-27 08:18:49,243 INFO L78 Accepts]: Start accepts. Automaton has 16487 states and 21165 transitions. Word has length 269 [2018-10-27 08:18:49,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:49,244 INFO L481 AbstractCegarLoop]: Abstraction has 16487 states and 21165 transitions. [2018-10-27 08:18:49,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:18:49,244 INFO L276 IsEmpty]: Start isEmpty. Operand 16487 states and 21165 transitions. [2018-10-27 08:18:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-10-27 08:18:49,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:49,305 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:18:49,306 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:49,309 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:49,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1403080672, now seen corresponding path program 1 times [2018-10-27 08:18:49,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:49,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:49,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:49,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:49,315 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:50,182 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-10-27 08:18:50,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:18:50,182 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:18:50,184 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 493 with the following transitions: [2018-10-27 08:18:50,186 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [623], [625], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1128], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:18:50,246 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:18:50,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:18:52,318 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:18:52,319 INFO L272 AbstractInterpreter]: Visited 249 different actions 744 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:18:52,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:52,363 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:18:52,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:18:52,363 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 08:18:52,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:52,378 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:18:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:52,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:18:53,821 WARN L179 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2018-10-27 08:18:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-10-27 08:18:54,770 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:18:55,538 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2018-10-27 08:18:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-10-27 08:18:58,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:18:58,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2018-10-27 08:18:58,197 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:18:58,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:18:58,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:18:58,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-10-27 08:18:58,202 INFO L87 Difference]: Start difference. First operand 16487 states and 21165 transitions. Second operand 9 states. [2018-10-27 08:19:00,802 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2018-10-27 08:19:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:19:44,732 INFO L93 Difference]: Finished difference Result 42042 states and 53454 transitions. [2018-10-27 08:19:44,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 08:19:44,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 492 [2018-10-27 08:19:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:19:44,914 INFO L225 Difference]: With dead ends: 42042 [2018-10-27 08:19:44,914 INFO L226 Difference]: Without dead ends: 25561 [2018-10-27 08:19:45,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 979 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:19:45,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25561 states. [2018-10-27 08:19:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25561 to 25496. [2018-10-27 08:19:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25496 states. [2018-10-27 08:19:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25496 states to 25496 states and 31733 transitions. [2018-10-27 08:19:45,746 INFO L78 Accepts]: Start accepts. Automaton has 25496 states and 31733 transitions. Word has length 492 [2018-10-27 08:19:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:19:45,747 INFO L481 AbstractCegarLoop]: Abstraction has 25496 states and 31733 transitions. [2018-10-27 08:19:45,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:19:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 25496 states and 31733 transitions. [2018-10-27 08:19:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-10-27 08:19:46,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:46,053 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:46,054 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:46,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:46,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1811401202, now seen corresponding path program 1 times [2018-10-27 08:19:46,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:46,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:46,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:46,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:46,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:47,610 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 08:19:47,974 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2018-10-27 08:19:48,117 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2018-10-27 08:19:48,766 WARN L179 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-27 08:19:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 387 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:19:49,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:19:49,943 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:19:49,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 535 with the following transitions: [2018-10-27 08:19:49,944 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [623], [625], [628], [636], [644], [652], [660], [668], [673], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1452], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:19:49,956 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:19:49,956 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:19:50,265 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:19:50,265 INFO L272 AbstractInterpreter]: Visited 271 different actions 271 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:19:50,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:50,299 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:19:51,180 INFO L227 lantSequenceWeakener]: Weakened 522 states. On average, predicates are now at 77.74% of their original sizes. [2018-10-27 08:19:51,181 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:19:51,447 INFO L415 sIntCurrentIteration]: We unified 533 AI predicates to 533 [2018-10-27 08:19:51,448 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:19:51,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:19:51,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2018-10-27 08:19:51,449 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:19:51,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:19:51,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:19:51,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:19:51,452 INFO L87 Difference]: Start difference. First operand 25496 states and 31733 transitions. Second operand 6 states. [2018-10-27 08:21:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:21:24,622 INFO L93 Difference]: Finished difference Result 50985 states and 63464 transitions. [2018-10-27 08:21:24,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:21:24,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 534 [2018-10-27 08:21:24,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:21:24,723 INFO L225 Difference]: With dead ends: 50985 [2018-10-27 08:21:24,723 INFO L226 Difference]: Without dead ends: 25495 [2018-10-27 08:21:24,796 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 534 GetRequests, 529 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 08:21:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25495 states. [2018-10-27 08:21:25,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25495 to 25493. [2018-10-27 08:21:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25493 states. [2018-10-27 08:21:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25493 states to 25493 states and 31700 transitions. [2018-10-27 08:21:25,508 INFO L78 Accepts]: Start accepts. Automaton has 25493 states and 31700 transitions. Word has length 534 [2018-10-27 08:21:25,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:21:25,508 INFO L481 AbstractCegarLoop]: Abstraction has 25493 states and 31700 transitions. [2018-10-27 08:21:25,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:21:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 25493 states and 31700 transitions. [2018-10-27 08:21:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-10-27 08:21:25,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:21:25,579 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:21:25,579 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:21:25,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:25,580 INFO L82 PathProgramCache]: Analyzing trace with hash 168759944, now seen corresponding path program 1 times [2018-10-27 08:21:25,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:21:25,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:25,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:25,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:25,582 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:21:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:25,995 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:21:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 123 proven. 207 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-27 08:21:26,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:26,552 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:21:26,553 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 537 with the following transitions: [2018-10-27 08:21:26,553 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [623], [625], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1272], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:21:26,561 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:21:26,561 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:21:26,936 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:21:26,936 INFO L272 AbstractInterpreter]: Visited 256 different actions 755 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:21:26,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:26,942 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:21:27,453 INFO L227 lantSequenceWeakener]: Weakened 533 states. On average, predicates are now at 80.45% of their original sizes. [2018-10-27 08:21:27,454 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:21:27,554 INFO L415 sIntCurrentIteration]: We unified 535 AI predicates to 535 [2018-10-27 08:21:27,554 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:21:27,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:21:27,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 08:21:27,555 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:21:27,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:21:27,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:21:27,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:21:27,556 INFO L87 Difference]: Start difference. First operand 25493 states and 31700 transitions. Second operand 9 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown