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_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:19:49,250 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:19:49,252 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:19:49,272 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:19:49,272 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:19:49,273 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:19:49,275 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:19:49,279 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:19:49,280 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:19:49,281 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:19:49,283 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:19:49,284 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:19:49,285 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:19:49,288 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:19:49,289 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:19:49,295 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:19:49,296 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:19:49,298 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:19:49,304 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:19:49,309 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:19:49,311 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:19:49,312 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:19:49,317 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:19:49,317 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:19:49,317 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:19:49,318 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:19:49,321 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:19:49,321 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:19:49,324 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:19:49,327 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:19:49,327 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:19:49,328 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:19:49,328 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:19:49,328 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:19:49,329 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:19:49,332 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:19:49,332 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 08:19:49,355 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:19:49,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:19:49,356 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:19:49,356 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:19:49,357 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:19:49,357 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:19:49,357 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:19:49,357 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:19:49,357 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:19:49,358 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:19:49,358 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:19:49,358 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:19:49,358 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:19:49,358 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:19:49,359 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:19:49,359 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:19:49,359 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:19:49,360 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:19:49,360 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:19:49,360 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:19:49,360 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:19:49,360 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:19:49,361 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:19:49,361 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:19:49,361 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:19:49,361 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:19:49,361 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:19:49,362 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:19:49,362 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:19:49,362 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:19:49,362 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:19:49,362 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:19:49,362 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:19:49,363 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:19:49,363 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:19:49,363 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:19:49,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:19:49,426 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:19:49,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:19:49,433 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:19:49,434 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:19:49,436 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17_true-unreach-call.c [2018-10-27 08:19:49,513 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16f543100/7693a7714a184286b83f1a1e166a41de/FLAG111e06437 [2018-10-27 08:19:50,268 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:19:50,268 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label17_true-unreach-call.c [2018-10-27 08:19:50,289 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16f543100/7693a7714a184286b83f1a1e166a41de/FLAG111e06437 [2018-10-27 08:19:50,308 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16f543100/7693a7714a184286b83f1a1e166a41de [2018-10-27 08:19:50,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:19:50,322 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:19:50,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:19:50,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:19:50,328 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:19:50,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:19:50" (1/1) ... [2018-10-27 08:19:50,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769a0e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:50, skipping insertion in model container [2018-10-27 08:19:50,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:19:50" (1/1) ... [2018-10-27 08:19:50,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:19:50,432 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:19:51,401 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:19:51,406 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:19:51,646 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:19:51,669 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:19:51,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51 WrapperNode [2018-10-27 08:19:51,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:19:51,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:19:51,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:19:51,671 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:19:51,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (1/1) ... [2018-10-27 08:19:51,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (1/1) ... [2018-10-27 08:19:51,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:19:51,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:19:51,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:19:51,999 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:19:52,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (1/1) ... [2018-10-27 08:19:52,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (1/1) ... [2018-10-27 08:19:52,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (1/1) ... [2018-10-27 08:19:52,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (1/1) ... [2018-10-27 08:19:52,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (1/1) ... [2018-10-27 08:19:52,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (1/1) ... [2018-10-27 08:19:52,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (1/1) ... [2018-10-27 08:19:52,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:19:52,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:19:52,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:19:52,197 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:19:52,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (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 08:19:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:19:52,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:19:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:19:52,275 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:19:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:19:52,276 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:19:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:19:52,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:19:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:19:52,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:19:59,112 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:19:59,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:19:59 BoogieIcfgContainer [2018-10-27 08:19:59,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:19:59,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:19:59,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:19:59,119 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:19:59,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:19:50" (1/3) ... [2018-10-27 08:19:59,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b42b2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:19:59, skipping insertion in model container [2018-10-27 08:19:59,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:51" (2/3) ... [2018-10-27 08:19:59,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b42b2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:19:59, skipping insertion in model container [2018-10-27 08:19:59,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:19:59" (3/3) ... [2018-10-27 08:19:59,124 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label17_true-unreach-call.c [2018-10-27 08:19:59,134 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:19:59,144 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:19:59,162 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:19:59,206 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:19:59,207 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:19:59,207 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:19:59,207 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:19:59,207 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:19:59,207 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:19:59,208 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:19:59,208 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:19:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 08:19:59,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-27 08:19:59,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:19:59,254 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] [2018-10-27 08:19:59,256 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:19:59,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:19:59,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1724248043, now seen corresponding path program 1 times [2018-10-27 08:19:59,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:19:59,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:59,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:19:59,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:19:59,327 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:19:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:19:59,812 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:19:59,932 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 08:19:59,935 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:19:59,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:19:59,936 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:19:59,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:19:59,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:19:59,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:19:59,968 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 08:20:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:03,750 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 08:20:03,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:20:03,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-10-27 08:20:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:03,783 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 08:20:03,784 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 08:20:03,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:20:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 08:20:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 08:20:03,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 08:20:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-27 08:20:03,926 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 65 [2018-10-27 08:20:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:03,927 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-27 08:20:03,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:20:03,927 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-27 08:20:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 08:20:03,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:03,937 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, 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 08:20:03,937 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:03,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:03,938 INFO L82 PathProgramCache]: Analyzing trace with hash 735694757, now seen corresponding path program 1 times [2018-10-27 08:20:03,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:03,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:03,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:03,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:03,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:04,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:04,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:20:04,345 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:04,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:20:04,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:20:04,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:20:04,349 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 6 states. [2018-10-27 08:20:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:11,657 INFO L93 Difference]: Finished difference Result 2191 states and 4077 transitions. [2018-10-27 08:20:11,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:20:11,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-27 08:20:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:11,673 INFO L225 Difference]: With dead ends: 2191 [2018-10-27 08:20:11,673 INFO L226 Difference]: Without dead ends: 1453 [2018-10-27 08:20:11,677 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 08:20:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2018-10-27 08:20:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1436. [2018-10-27 08:20:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-27 08:20:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2556 transitions. [2018-10-27 08:20:11,755 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2556 transitions. Word has length 136 [2018-10-27 08:20:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:11,756 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2556 transitions. [2018-10-27 08:20:11,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:11,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2556 transitions. [2018-10-27 08:20:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 08:20:11,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:11,770 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, 1, 1, 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 08:20:11,771 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:11,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:11,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1598709869, now seen corresponding path program 1 times [2018-10-27 08:20:11,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:11,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:11,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:11,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:11,773 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:11,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:11,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:20:11,980 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:11,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:20:11,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:20:11,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:20:11,982 INFO L87 Difference]: Start difference. First operand 1436 states and 2556 transitions. Second operand 6 states. [2018-10-27 08:20:17,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:17,386 INFO L93 Difference]: Finished difference Result 3925 states and 7037 transitions. [2018-10-27 08:20:17,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:20:17,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-27 08:20:17,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:17,423 INFO L225 Difference]: With dead ends: 3925 [2018-10-27 08:20:17,424 INFO L226 Difference]: Without dead ends: 2495 [2018-10-27 08:20:17,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:20:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2018-10-27 08:20:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2466. [2018-10-27 08:20:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2018-10-27 08:20:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4043 transitions. [2018-10-27 08:20:17,532 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4043 transitions. Word has length 140 [2018-10-27 08:20:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:17,533 INFO L481 AbstractCegarLoop]: Abstraction has 2466 states and 4043 transitions. [2018-10-27 08:20:17,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4043 transitions. [2018-10-27 08:20:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-27 08:20:17,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:17,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:17,540 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:17,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:17,541 INFO L82 PathProgramCache]: Analyzing trace with hash -901457180, now seen corresponding path program 1 times [2018-10-27 08:20:17,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:17,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:17,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:17,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:17,543 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:17,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:17,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:20:17,805 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:17,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:20:17,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:20:17,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:20:17,807 INFO L87 Difference]: Start difference. First operand 2466 states and 4043 transitions. Second operand 6 states. [2018-10-27 08:20:22,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:22,053 INFO L93 Difference]: Finished difference Result 6987 states and 11546 transitions. [2018-10-27 08:20:22,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:20:22,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-27 08:20:22,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:22,090 INFO L225 Difference]: With dead ends: 6987 [2018-10-27 08:20:22,090 INFO L226 Difference]: Without dead ends: 4527 [2018-10-27 08:20:22,111 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 08:20:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2018-10-27 08:20:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 4495. [2018-10-27 08:20:22,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4495 states. [2018-10-27 08:20:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4495 states to 4495 states and 6547 transitions. [2018-10-27 08:20:22,246 INFO L78 Accepts]: Start accepts. Automaton has 4495 states and 6547 transitions. Word has length 171 [2018-10-27 08:20:22,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:22,247 INFO L481 AbstractCegarLoop]: Abstraction has 4495 states and 6547 transitions. [2018-10-27 08:20:22,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:22,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4495 states and 6547 transitions. [2018-10-27 08:20:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-27 08:20:22,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:22,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:20:22,256 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:22,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:22,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1025094140, now seen corresponding path program 1 times [2018-10-27 08:20:22,257 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:22,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:22,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:22,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:22,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:20:22,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:20:22,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:20:22,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:22,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:20:22,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:20:22,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:20:22,649 INFO L87 Difference]: Start difference. First operand 4495 states and 6547 transitions. Second operand 6 states. [2018-10-27 08:20:31,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:31,631 INFO L93 Difference]: Finished difference Result 17032 states and 26184 transitions. [2018-10-27 08:20:31,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:20:31,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2018-10-27 08:20:31,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:31,722 INFO L225 Difference]: With dead ends: 17032 [2018-10-27 08:20:31,722 INFO L226 Difference]: Without dead ends: 12543 [2018-10-27 08:20:31,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:20:31,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12543 states. [2018-10-27 08:20:32,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12543 to 12538. [2018-10-27 08:20:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12538 states. [2018-10-27 08:20:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12538 states to 12538 states and 17866 transitions. [2018-10-27 08:20:32,150 INFO L78 Accepts]: Start accepts. Automaton has 12538 states and 17866 transitions. Word has length 215 [2018-10-27 08:20:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:32,151 INFO L481 AbstractCegarLoop]: Abstraction has 12538 states and 17866 transitions. [2018-10-27 08:20:32,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 12538 states and 17866 transitions. [2018-10-27 08:20:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-27 08:20:32,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:32,193 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, 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] [2018-10-27 08:20:32,193 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:32,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:32,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1811832691, now seen corresponding path program 1 times [2018-10-27 08:20:32,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:32,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:32,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:32,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:32,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:32,532 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:20:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 116 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:20:33,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:33,047 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:20:33,048 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 340 with the following transitions: [2018-10-27 08:20:33,059 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], [599], [601], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [692], [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], [1188], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:20:33,147 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:20:33,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:20:34,060 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:20:34,063 INFO L272 AbstractInterpreter]: Visited 204 different actions 204 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:20:34,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:34,097 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:20:34,753 INFO L227 lantSequenceWeakener]: Weakened 330 states. On average, predicates are now at 77.94% of their original sizes. [2018-10-27 08:20:34,754 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:20:34,996 INFO L415 sIntCurrentIteration]: We unified 338 AI predicates to 338 [2018-10-27 08:20:34,996 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:20:34,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:20:34,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:20:34,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:34,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:20:34,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:20:34,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:20:34,999 INFO L87 Difference]: Start difference. First operand 12538 states and 17866 transitions. Second operand 6 states. [2018-10-27 08:22:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:22:09,058 INFO L93 Difference]: Finished difference Result 25410 states and 36187 transitions. [2018-10-27 08:22:09,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:22:09,058 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2018-10-27 08:22:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:22:09,145 INFO L225 Difference]: With dead ends: 25410 [2018-10-27 08:22:09,146 INFO L226 Difference]: Without dead ends: 12878 [2018-10-27 08:22:09,200 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 339 GetRequests, 334 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 08:22:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12878 states. [2018-10-27 08:22:09,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12878 to 12876. [2018-10-27 08:22:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12876 states. [2018-10-27 08:22:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12876 states to 12876 states and 18213 transitions. [2018-10-27 08:22:09,614 INFO L78 Accepts]: Start accepts. Automaton has 12876 states and 18213 transitions. Word has length 339 [2018-10-27 08:22:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:22:09,615 INFO L481 AbstractCegarLoop]: Abstraction has 12876 states and 18213 transitions. [2018-10-27 08:22:09,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:22:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 12876 states and 18213 transitions. [2018-10-27 08:22:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-27 08:22:09,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:22:09,656 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:09,657 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:22:09,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:22:09,657 INFO L82 PathProgramCache]: Analyzing trace with hash 2061657169, now seen corresponding path program 1 times [2018-10-27 08:22:09,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:22:09,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:22:09,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:22:09,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:22:09,659 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:22:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:22:10,040 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:22:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 180 proven. 266 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-27 08:22:10,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:22:10,638 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:22:10,638 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 407 with the following transitions: [2018-10-27 08:22:10,639 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], [599], [601], [604], [612], [620], [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], [760], [761], [765], [769], [773], [777], [781], [785], [788], [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], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 08:22:10,649 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:22:10,649 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:22:10,974 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:22:10,974 INFO L272 AbstractInterpreter]: Visited 159 different actions 464 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 08:22:11,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:22:11,010 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:22:11,411 INFO L227 lantSequenceWeakener]: Weakened 403 states. On average, predicates are now at 80.58% of their original sizes. [2018-10-27 08:22:11,412 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:22:11,827 INFO L415 sIntCurrentIteration]: We unified 405 AI predicates to 405 [2018-10-27 08:22:11,827 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:22:11,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:22:11,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 08:22:11,828 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:22:11,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:22:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:22:11,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:22:11,829 INFO L87 Difference]: Start difference. First operand 12876 states and 18213 transitions. Second operand 10 states. [2018-10-27 08:23:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:23:39,579 INFO L93 Difference]: Finished difference Result 30743 states and 44721 transitions. [2018-10-27 08:23:39,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 08:23:39,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 406 [2018-10-27 08:23:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:23:39,690 INFO L225 Difference]: With dead ends: 30743 [2018-10-27 08:23:39,691 INFO L226 Difference]: Without dead ends: 17870 [2018-10-27 08:23:39,766 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 415 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:23:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17870 states. [2018-10-27 08:23:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17870 to 17808. [2018-10-27 08:23:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17808 states. [2018-10-27 08:23:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17808 states to 17808 states and 23798 transitions. [2018-10-27 08:23:40,204 INFO L78 Accepts]: Start accepts. Automaton has 17808 states and 23798 transitions. Word has length 406 [2018-10-27 08:23:40,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:23:40,205 INFO L481 AbstractCegarLoop]: Abstraction has 17808 states and 23798 transitions. [2018-10-27 08:23:40,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:23:40,206 INFO L276 IsEmpty]: Start isEmpty. Operand 17808 states and 23798 transitions. [2018-10-27 08:23:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-10-27 08:23:40,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:23:40,273 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:40,273 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:23:40,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:23:40,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1221870952, now seen corresponding path program 1 times [2018-10-27 08:23:40,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:23:40,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:23:40,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:23:40,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:23:40,275 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:23:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:23:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 376 proven. 74 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 08:23:41,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:23:41,357 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:23:41,358 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 580 with the following transitions: [2018-10-27 08:23:41,359 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], [599], [601], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [692], [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], [1188], [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 08:23:41,366 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:23:41,366 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:23:41,649 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:23:41,650 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:23:41,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:23:41,679 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:23:42,165 INFO L227 lantSequenceWeakener]: Weakened 576 states. On average, predicates are now at 77.7% of their original sizes. [2018-10-27 08:23:42,165 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:23:42,290 INFO L415 sIntCurrentIteration]: We unified 578 AI predicates to 578 [2018-10-27 08:23:42,290 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:23:42,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:23:42,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 08:23:42,291 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:23:42,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:23:42,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:23:42,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:23:42,292 INFO L87 Difference]: Start difference. First operand 17808 states and 23798 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown