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/Problem18_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:39:48,273 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:39:48,275 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:39:48,290 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:39:48,290 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:39:48,291 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:39:48,292 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:39:48,294 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:39:48,296 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:39:48,297 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:39:48,298 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:39:48,298 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:39:48,299 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:39:48,300 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:39:48,301 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:39:48,302 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:39:48,303 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:39:48,305 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:39:48,307 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:39:48,308 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:39:48,309 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:39:48,311 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:39:48,313 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:39:48,313 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:39:48,317 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:39:48,318 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:39:48,322 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:39:48,323 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:39:48,326 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:39:48,328 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:39:48,328 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:39:48,329 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:39:48,329 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:39:48,329 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:39:48,333 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:39:48,334 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:39:48,334 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 08:39:48,360 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:39:48,360 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:39:48,361 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:39:48,361 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:39:48,361 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:39:48,362 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:39:48,362 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:39:48,362 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:39:48,362 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:39:48,362 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:39:48,362 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:39:48,363 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:39:48,363 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:39:48,363 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:39:48,364 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:39:48,364 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:39:48,364 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:39:48,364 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:39:48,365 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:39:48,365 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:39:48,365 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:39:48,365 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:39:48,365 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:39:48,366 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:39:48,366 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:39:48,366 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:39:48,366 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:39:48,366 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:39:48,367 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:39:48,367 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:39:48,367 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:39:48,367 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:39:48,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:39:48,367 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:39:48,368 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:39:48,368 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:39:48,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:39:48,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:39:48,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:39:48,460 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:39:48,460 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:39:48,461 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label13_true-unreach-call.c [2018-10-27 08:39:48,533 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fdd8adeb6/92296ffb40484937ab575124e258f457/FLAG79ee88fa8 [2018-10-27 08:39:49,244 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:39:49,245 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label13_true-unreach-call.c [2018-10-27 08:39:49,268 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fdd8adeb6/92296ffb40484937ab575124e258f457/FLAG79ee88fa8 [2018-10-27 08:39:49,285 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fdd8adeb6/92296ffb40484937ab575124e258f457 [2018-10-27 08:39:49,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:39:49,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:39:49,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:39:49,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:39:49,304 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:39:49,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:39:49" (1/1) ... [2018-10-27 08:39:49,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:49, skipping insertion in model container [2018-10-27 08:39:49,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:39:49" (1/1) ... [2018-10-27 08:39:49,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:39:49,457 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:39:50,524 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:39:50,529 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:39:50,975 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:39:51,006 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:39:51,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51 WrapperNode [2018-10-27 08:39:51,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:39:51,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:39:51,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:39:51,009 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:39:51,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (1/1) ... [2018-10-27 08:39:51,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (1/1) ... [2018-10-27 08:39:51,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:39:51,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:39:51,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:39:51,392 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:39:51,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (1/1) ... [2018-10-27 08:39:51,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (1/1) ... [2018-10-27 08:39:51,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (1/1) ... [2018-10-27 08:39:51,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (1/1) ... [2018-10-27 08:39:51,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (1/1) ... [2018-10-27 08:39:51,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (1/1) ... [2018-10-27 08:39:51,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (1/1) ... [2018-10-27 08:39:51,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:39:51,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:39:51,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:39:51,642 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:39:51,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (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 08:39:51,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:39:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:39:51,717 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:39:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:39:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:39:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:39:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:39:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:39:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:39:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:39:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:39:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:39:59,435 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:39:59,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:39:59 BoogieIcfgContainer [2018-10-27 08:39:59,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:39:59,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:39:59,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:39:59,443 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:39:59,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:39:49" (1/3) ... [2018-10-27 08:39:59,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:39:59, skipping insertion in model container [2018-10-27 08:39:59,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:39:51" (2/3) ... [2018-10-27 08:39:59,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4211429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:39:59, skipping insertion in model container [2018-10-27 08:39:59,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:39:59" (3/3) ... [2018-10-27 08:39:59,447 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label13_true-unreach-call.c [2018-10-27 08:39:59,457 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:39:59,467 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:39:59,485 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:39:59,537 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:39:59,537 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:39:59,537 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:39:59,538 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:39:59,538 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:39:59,538 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:39:59,538 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:39:59,538 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:39:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 08:39:59,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-27 08:39:59,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:39:59,596 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:39:59,599 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:39:59,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:39:59,605 INFO L82 PathProgramCache]: Analyzing trace with hash -2080894020, now seen corresponding path program 1 times [2018-10-27 08:39:59,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:39:59,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:59,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:39:59,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:39:59,659 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:39:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:00,086 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 08:40:00,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:00,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:40:00,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:00,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:40:00,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:40:00,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:00,117 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-27 08:40:13,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:13,337 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-27 08:40:13,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:40:13,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-27 08:40:13,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:13,397 INFO L225 Difference]: With dead ends: 2974 [2018-10-27 08:40:13,397 INFO L226 Difference]: Without dead ends: 2193 [2018-10-27 08:40:13,414 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 08:40:13,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-27 08:40:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-10-27 08:40:13,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-10-27 08:40:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3506 transitions. [2018-10-27 08:40:13,620 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3506 transitions. Word has length 52 [2018-10-27 08:40:13,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:13,621 INFO L481 AbstractCegarLoop]: Abstraction has 2193 states and 3506 transitions. [2018-10-27 08:40:13,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:40:13,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3506 transitions. [2018-10-27 08:40:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-27 08:40:13,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:13,629 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:13,630 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:13,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:13,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1512413558, now seen corresponding path program 1 times [2018-10-27 08:40:13,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:13,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:13,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:13,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:13,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:13,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:13,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:40:13,883 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:13,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:40:13,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:40:13,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:40:13,886 INFO L87 Difference]: Start difference. First operand 2193 states and 3506 transitions. Second operand 5 states. [2018-10-27 08:40:24,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:24,207 INFO L93 Difference]: Finished difference Result 6600 states and 10738 transitions. [2018-10-27 08:40:24,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:40:24,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-10-27 08:40:24,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:24,248 INFO L225 Difference]: With dead ends: 6600 [2018-10-27 08:40:24,249 INFO L226 Difference]: Without dead ends: 4413 [2018-10-27 08:40:24,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:40:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-10-27 08:40:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-10-27 08:40:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-10-27 08:40:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6712 transitions. [2018-10-27 08:40:24,388 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6712 transitions. Word has length 122 [2018-10-27 08:40:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:24,388 INFO L481 AbstractCegarLoop]: Abstraction has 4378 states and 6712 transitions. [2018-10-27 08:40:24,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:40:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6712 transitions. [2018-10-27 08:40:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-27 08:40:24,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:24,400 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:24,400 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:24,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash -25619309, now seen corresponding path program 1 times [2018-10-27 08:40:24,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:24,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:24,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:24,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:24,405 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:24,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:24,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:40:24,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:24,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:40:24,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:40:24,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:40:24,703 INFO L87 Difference]: Start difference. First operand 4378 states and 6712 transitions. Second operand 6 states. [2018-10-27 08:40:30,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:30,840 INFO L93 Difference]: Finished difference Result 11002 states and 16943 transitions. [2018-10-27 08:40:30,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:40:30,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-27 08:40:30,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:30,883 INFO L225 Difference]: With dead ends: 11002 [2018-10-27 08:40:30,884 INFO L226 Difference]: Without dead ends: 6630 [2018-10-27 08:40:30,899 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 08:40:30,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-10-27 08:40:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-10-27 08:40:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-27 08:40:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8773 transitions. [2018-10-27 08:40:31,073 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8773 transitions. Word has length 149 [2018-10-27 08:40:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:31,074 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 8773 transitions. [2018-10-27 08:40:31,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:40:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8773 transitions. [2018-10-27 08:40:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-27 08:40:31,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:31,077 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:31,077 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:31,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:31,077 INFO L82 PathProgramCache]: Analyzing trace with hash -2048725409, now seen corresponding path program 1 times [2018-10-27 08:40:31,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:31,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:31,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:31,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:31,079 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:40:31,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:31,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:40:31,266 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:31,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:40:31,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:40:31,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:31,268 INFO L87 Difference]: Start difference. First operand 6590 states and 8773 transitions. Second operand 4 states. [2018-10-27 08:40:37,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:37,494 INFO L93 Difference]: Finished difference Result 13174 states and 17554 transitions. [2018-10-27 08:40:37,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:40:37,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2018-10-27 08:40:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:37,522 INFO L225 Difference]: With dead ends: 13174 [2018-10-27 08:40:37,522 INFO L226 Difference]: Without dead ends: 6590 [2018-10-27 08:40:37,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:37,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2018-10-27 08:40:37,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6590. [2018-10-27 08:40:37,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-10-27 08:40:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 8069 transitions. [2018-10-27 08:40:37,687 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 8069 transitions. Word has length 159 [2018-10-27 08:40:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:37,687 INFO L481 AbstractCegarLoop]: Abstraction has 6590 states and 8069 transitions. [2018-10-27 08:40:37,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:40:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 8069 transitions. [2018-10-27 08:40:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-27 08:40:37,691 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:37,691 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:37,691 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:37,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:37,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1682119955, now seen corresponding path program 1 times [2018-10-27 08:40:37,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:37,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:37,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:37,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:37,693 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-27 08:40:37,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:40:37,975 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:40:37,975 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:37,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:40:37,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:40:37,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:37,977 INFO L87 Difference]: Start difference. First operand 6590 states and 8069 transitions. Second operand 4 states. [2018-10-27 08:40:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:40:46,808 INFO L93 Difference]: Finished difference Result 26000 states and 32600 transitions. [2018-10-27 08:40:46,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:40:46,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2018-10-27 08:40:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:40:46,876 INFO L225 Difference]: With dead ends: 26000 [2018-10-27 08:40:46,876 INFO L226 Difference]: Without dead ends: 19416 [2018-10-27 08:40:46,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:40:46,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19416 states. [2018-10-27 08:40:47,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19416 to 19416. [2018-10-27 08:40:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19416 states. [2018-10-27 08:40:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19416 states to 19416 states and 22932 transitions. [2018-10-27 08:40:47,315 INFO L78 Accepts]: Start accepts. Automaton has 19416 states and 22932 transitions. Word has length 229 [2018-10-27 08:40:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:40:47,316 INFO L481 AbstractCegarLoop]: Abstraction has 19416 states and 22932 transitions. [2018-10-27 08:40:47,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:40:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 19416 states and 22932 transitions. [2018-10-27 08:40:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-27 08:40:47,328 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:40:47,328 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:40:47,329 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:40:47,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:47,329 INFO L82 PathProgramCache]: Analyzing trace with hash 782960051, now seen corresponding path program 1 times [2018-10-27 08:40:47,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:40:47,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:47,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:40:47,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:40:47,331 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:40:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:40:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 235 proven. 70 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 08:40:47,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:40:47,989 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:40:47,990 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 344 with the following transitions: [2018-10-27 08:40:47,993 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1939], [1941], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2120], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2224], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:40:48,046 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:40:48,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:40:48,602 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:40:48,604 INFO L272 AbstractInterpreter]: Visited 129 different actions 129 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:40:48,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:40:48,648 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:40:49,320 INFO L227 lantSequenceWeakener]: Weakened 331 states. On average, predicates are now at 77.79% of their original sizes. [2018-10-27 08:40:49,321 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:40:49,462 INFO L415 sIntCurrentIteration]: We unified 342 AI predicates to 342 [2018-10-27 08:40:49,463 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:40:49,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:40:49,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:40:49,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:40:49,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:40:49,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:40:49,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:40:49,466 INFO L87 Difference]: Start difference. First operand 19416 states and 22932 transitions. Second operand 6 states. [2018-10-27 08:42:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:42:45,726 INFO L93 Difference]: Finished difference Result 39531 states and 46595 transitions. [2018-10-27 08:42:45,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:42:45,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 343 [2018-10-27 08:42:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:42:45,785 INFO L225 Difference]: With dead ends: 39531 [2018-10-27 08:42:45,785 INFO L226 Difference]: Without dead ends: 20121 [2018-10-27 08:42:45,821 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 343 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:42:45,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20121 states. [2018-10-27 08:42:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20121 to 20119. [2018-10-27 08:42:46,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20119 states. [2018-10-27 08:42:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20119 states to 20119 states and 23647 transitions. [2018-10-27 08:42:46,155 INFO L78 Accepts]: Start accepts. Automaton has 20119 states and 23647 transitions. Word has length 343 [2018-10-27 08:42:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:42:46,155 INFO L481 AbstractCegarLoop]: Abstraction has 20119 states and 23647 transitions. [2018-10-27 08:42:46,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:42:46,156 INFO L276 IsEmpty]: Start isEmpty. Operand 20119 states and 23647 transitions. [2018-10-27 08:42:46,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-10-27 08:42:46,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:42:46,171 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:42:46,171 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:42:46,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:42:46,172 INFO L82 PathProgramCache]: Analyzing trace with hash 511291718, now seen corresponding path program 1 times [2018-10-27 08:42:46,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:42:46,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:42:46,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:42:46,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:42:46,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:42:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:42:46,770 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:42:46,963 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:42:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 194 proven. 219 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:42:47,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:42:47,593 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:42:47,593 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 435 with the following transitions: [2018-10-27 08:42:47,594 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1939], [1941], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2188], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:42:47,606 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:42:47,607 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:42:47,850 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:42:47,850 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:42:47,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:42:47,889 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:42:48,306 INFO L227 lantSequenceWeakener]: Weakened 431 states. On average, predicates are now at 77.71% of their original sizes. [2018-10-27 08:42:48,307 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:42:48,741 INFO L415 sIntCurrentIteration]: We unified 433 AI predicates to 433 [2018-10-27 08:42:48,741 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:42:48,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:42:48,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-10-27 08:42:48,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:42:48,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:42:48,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:42:48,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:42:48,743 INFO L87 Difference]: Start difference. First operand 20119 states and 23647 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown