java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:13:55,238 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:13:55,240 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:13:55,258 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:13:55,258 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:13:55,259 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:13:55,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:13:55,263 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:13:55,264 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:13:55,265 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:13:55,266 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:13:55,266 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:13:55,267 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:13:55,268 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:13:55,270 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:13:55,270 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:13:55,271 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:13:55,273 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:13:55,275 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:13:55,277 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:13:55,278 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:13:55,282 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:13:55,284 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:13:55,284 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:13:55,284 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:13:55,285 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:13:55,288 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:13:55,289 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:13:55,290 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:13:55,293 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:13:55,294 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:13:55,295 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:13:55,295 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:13:55,295 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:13:55,298 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:13:55,299 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:13:55,299 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 21:13:55,325 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:13:55,325 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:13:55,327 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:13:55,327 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:13:55,327 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:13:55,327 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:13:55,327 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:13:55,328 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:13:55,329 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:13:55,329 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:13:55,329 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:13:55,329 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:13:55,330 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:13:55,330 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:13:55,331 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:13:55,332 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:13:55,332 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:13:55,332 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:13:55,332 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:13:55,332 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:13:55,333 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:13:55,333 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:13:55,333 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:13:55,333 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:13:55,333 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:13:55,335 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:13:55,335 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:13:55,335 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:13:55,336 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:13:55,336 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:13:55,336 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:13:55,336 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:13:55,336 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:13:55,336 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:13:55,337 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:13:55,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:13:55,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:13:55,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:13:55,437 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:13:55,437 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:13:55,438 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-11-07 21:13:55,507 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed860af91/384a65c86a0e4a6c88ef99d3bd06e5d8/FLAGe8e1fd4f1 [2018-11-07 21:13:56,289 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:13:56,290 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label40_true-unreach-call.c [2018-11-07 21:13:56,320 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed860af91/384a65c86a0e4a6c88ef99d3bd06e5d8/FLAGe8e1fd4f1 [2018-11-07 21:13:56,341 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed860af91/384a65c86a0e4a6c88ef99d3bd06e5d8 [2018-11-07 21:13:56,355 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:13:56,357 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:13:56,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:13:56,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:13:56,365 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:13:56,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:13:56" (1/1) ... [2018-11-07 21:13:56,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386f4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:56, skipping insertion in model container [2018-11-07 21:13:56,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:13:56" (1/1) ... [2018-11-07 21:13:56,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:13:56,522 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:13:57,584 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:13:57,590 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:13:58,055 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:13:58,085 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:13:58,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58 WrapperNode [2018-11-07 21:13:58,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:13:58,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:13:58,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:13:58,087 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:13:58,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... [2018-11-07 21:13:58,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... [2018-11-07 21:13:58,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:13:58,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:13:58,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:13:58,403 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:13:58,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... [2018-11-07 21:13:58,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... [2018-11-07 21:13:58,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... [2018-11-07 21:13:58,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... [2018-11-07 21:13:58,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... [2018-11-07 21:13:58,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... [2018-11-07 21:13:58,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... [2018-11-07 21:13:58,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:13:58,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:13:58,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:13:58,618 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:13:58,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 21:13:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:13:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:13:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:13:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:13:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:13:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:13:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:13:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:13:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:13:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:13:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:13:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:13:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:14:07,824 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:14:07,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:14:07 BoogieIcfgContainer [2018-11-07 21:14:07,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:14:07,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:14:07,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:14:07,829 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:14:07,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:13:56" (1/3) ... [2018-11-07 21:14:07,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d8a14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:14:07, skipping insertion in model container [2018-11-07 21:14:07,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:13:58" (2/3) ... [2018-11-07 21:14:07,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d8a14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:14:07, skipping insertion in model container [2018-11-07 21:14:07,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:14:07" (3/3) ... [2018-11-07 21:14:07,834 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label40_true-unreach-call.c [2018-11-07 21:14:07,844 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:14:07,855 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:14:07,874 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:14:07,927 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:14:07,928 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:14:07,928 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:14:07,928 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:14:07,928 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:14:07,928 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:14:07,929 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:14:07,929 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:14:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 21:14:07,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-07 21:14:07,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:14:07,990 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] [2018-11-07 21:14:07,993 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:14:07,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:07,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1179800183, now seen corresponding path program 1 times [2018-11-07 21:14:08,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:14:08,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:08,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:14:08,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:08,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:14:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:14:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:14:08,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:14:08,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:14:08,508 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:14:08,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:14:08,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:14:08,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:14:08,539 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 21:14:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:14:15,423 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 21:14:15,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:14:15,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-11-07 21:14:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:14:15,461 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 21:14:15,461 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 21:14:15,477 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:14:15,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 21:14:15,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 21:14:15,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 21:14:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 21:14:15,657 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 51 [2018-11-07 21:14:15,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:14:15,658 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 21:14:15,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:14:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 21:14:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 21:14:15,674 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:14:15,674 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:14:15,675 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:14:15,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1038500593, now seen corresponding path program 1 times [2018-11-07 21:14:15,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:14:15,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:15,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:14:15,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:15,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:14:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:14:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:14:16,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:14:16,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:14:16,033 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:14:16,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:14:16,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:14:16,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:14:16,036 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-11-07 21:14:24,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:14:24,772 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-11-07 21:14:24,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:14:24,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 21:14:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:14:24,793 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 21:14:24,794 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 21:14:24,799 INFO L604 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 [2018-11-07 21:14:24,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 21:14:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-11-07 21:14:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 21:14:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-11-07 21:14:24,891 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 140 [2018-11-07 21:14:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:14:24,892 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-11-07 21:14:24,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:14:24,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-11-07 21:14:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-11-07 21:14:24,904 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:14:24,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:14:24,904 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:14:24,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:24,905 INFO L82 PathProgramCache]: Analyzing trace with hash -429800468, now seen corresponding path program 1 times [2018-11-07 21:14:24,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:14:24,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:24,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:14:24,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:24,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:14:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:14:25,307 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:14:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:14:25,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:14:25,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:14:25,665 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:14:25,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:14:25,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:14:25,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:14:25,667 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-11-07 21:14:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:14:34,497 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-11-07 21:14:34,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:14:34,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-11-07 21:14:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:14:34,553 INFO L225 Difference]: With dead ends: 10194 [2018-11-07 21:14:34,554 INFO L226 Difference]: Without dead ends: 7272 [2018-11-07 21:14:34,571 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:14:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-11-07 21:14:34,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-11-07 21:14:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-11-07 21:14:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-11-07 21:14:34,813 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 187 [2018-11-07 21:14:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:14:34,814 INFO L480 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-11-07 21:14:34,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:14:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-11-07 21:14:34,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 21:14:34,820 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:14:34,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:14:34,820 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:14:34,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:34,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1302575248, now seen corresponding path program 1 times [2018-11-07 21:14:34,821 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:14:34,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:34,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:14:34,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:34,822 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:14:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:14:35,188 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:14:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:14:35,526 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:14:35,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:14:35,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:14:35,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:14:35,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:14:35,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:14:35,528 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-11-07 21:14:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:14:40,880 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-11-07 21:14:40,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:14:40,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-11-07 21:14:40,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:14:40,934 INFO L225 Difference]: With dead ends: 17365 [2018-11-07 21:14:40,935 INFO L226 Difference]: Without dead ends: 10163 [2018-11-07 21:14:40,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:14:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-11-07 21:14:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-11-07 21:14:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-11-07 21:14:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-11-07 21:14:41,224 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 189 [2018-11-07 21:14:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:14:41,225 INFO L480 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-11-07 21:14:41,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:14:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-11-07 21:14:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-07 21:14:41,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:14:41,232 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:14:41,233 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:14:41,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:41,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1778582221, now seen corresponding path program 1 times [2018-11-07 21:14:41,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:14:41,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:41,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:14:41,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:41,235 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:14:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:14:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 21:14:41,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:14:41,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:14:41,519 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:14:41,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:14:41,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:14:41,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:14:41,520 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-11-07 21:14:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:14:49,642 INFO L93 Difference]: Finished difference Result 28811 states and 41798 transitions. [2018-11-07 21:14:49,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:14:49,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2018-11-07 21:14:49,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:14:49,726 INFO L225 Difference]: With dead ends: 28811 [2018-11-07 21:14:49,726 INFO L226 Difference]: Without dead ends: 18709 [2018-11-07 21:14:49,772 INFO L604 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 [2018-11-07 21:14:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2018-11-07 21:14:50,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 18709. [2018-11-07 21:14:50,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18709 states. [2018-11-07 21:14:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18709 states to 18709 states and 25926 transitions. [2018-11-07 21:14:50,166 INFO L78 Accepts]: Start accepts. Automaton has 18709 states and 25926 transitions. Word has length 247 [2018-11-07 21:14:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:14:50,166 INFO L480 AbstractCegarLoop]: Abstraction has 18709 states and 25926 transitions. [2018-11-07 21:14:50,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:14:50,167 INFO L276 IsEmpty]: Start isEmpty. Operand 18709 states and 25926 transitions. [2018-11-07 21:14:50,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-11-07 21:14:50,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:14:50,185 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:14:50,185 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:14:50,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:50,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1669490635, now seen corresponding path program 1 times [2018-11-07 21:14:50,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:14:50,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:50,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:14:50,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:14:50,187 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:14:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:14:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 148 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:14:50,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:14:50,502 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:14:50,503 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-11-07 21:14:50,506 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], [1931], [1933], [1936], [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], [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], [2368], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:14:50,568 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:14:50,568 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:14:51,221 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:14:51,223 INFO L272 AbstractInterpreter]: Visited 138 different actions 138 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 21:14:51,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:14:51,274 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:14:52,061 INFO L227 lantSequenceWeakener]: Weakened 282 states. On average, predicates are now at 77.79% of their original sizes. [2018-11-07 21:14:52,062 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:14:52,394 INFO L415 sIntCurrentIteration]: We unified 290 AI predicates to 290 [2018-11-07 21:14:52,394 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:14:52,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:14:52,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 21:14:52,396 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:14:52,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:14:52,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:14:52,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:14:52,397 INFO L87 Difference]: Start difference. First operand 18709 states and 25926 transitions. Second operand 7 states. [2018-11-07 21:15:01,639 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:15:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:15:17,927 INFO L93 Difference]: Finished difference Result 38117 states and 52714 transitions. [2018-11-07 21:15:17,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:15:17,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2018-11-07 21:15:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:15:17,994 INFO L225 Difference]: With dead ends: 38117 [2018-11-07 21:15:17,994 INFO L226 Difference]: Without dead ends: 19414 [2018-11-07 21:15:18,044 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:15:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19414 states. [2018-11-07 21:15:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19414 to 19412. [2018-11-07 21:15:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19412 states. [2018-11-07 21:15:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 26641 transitions. [2018-11-07 21:15:18,457 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 26641 transitions. Word has length 291 [2018-11-07 21:15:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:15:18,458 INFO L480 AbstractCegarLoop]: Abstraction has 19412 states and 26641 transitions. [2018-11-07 21:15:18,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:15:18,458 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 26641 transitions. [2018-11-07 21:15:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-11-07 21:15:18,482 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:15:18,483 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:15:18,483 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:15:18,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:15:18,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1087569641, now seen corresponding path program 1 times [2018-11-07 21:15:18,484 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:15:18,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:15:18,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:15:18,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:15:18,485 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:15:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:15:19,017 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:15:19,213 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:15:19,447 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:15:19,893 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 21:15:20,525 WARN L179 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-07 21:15:21,143 WARN L179 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 21:15:21,362 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 21:15:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 191 proven. 283 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:15:21,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:15:21,726 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:15:21,726 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 479 with the following transitions: [2018-11-07 21:15:21,727 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], [1931], [1933], [1936], [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], [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], [2368], [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] [2018-11-07 21:15:21,736 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:15:21,737 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:15:22,523 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:15:22,523 INFO L272 AbstractInterpreter]: Visited 196 different actions 388 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:15:22,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:15:22,569 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:15:23,875 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 77.79% of their original sizes. [2018-11-07 21:15:23,875 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:15:25,716 INFO L415 sIntCurrentIteration]: We unified 477 AI predicates to 477 [2018-11-07 21:15:25,717 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:15:25,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:15:25,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-07 21:15:25,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:15:25,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 21:15:25,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 21:15:25,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-11-07 21:15:25,718 INFO L87 Difference]: Start difference. First operand 19412 states and 26641 transitions. Second operand 16 states. [2018-11-07 21:15:48,735 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:16:22,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:16:22,038 INFO L93 Difference]: Finished difference Result 39659 states and 54406 transitions. [2018-11-07 21:16:22,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 21:16:22,039 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 478 [2018-11-07 21:16:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:16:22,099 INFO L225 Difference]: With dead ends: 39659 [2018-11-07 21:16:22,099 INFO L226 Difference]: Without dead ends: 19703 [2018-11-07 21:16:22,141 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 485 GetRequests, 408 SyntacticMatches, 55 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-11-07 21:16:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2018-11-07 21:16:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 19412. [2018-11-07 21:16:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19412 states. [2018-11-07 21:16:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 26633 transitions. [2018-11-07 21:16:22,466 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 26633 transitions. Word has length 478 [2018-11-07 21:16:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:16:22,467 INFO L480 AbstractCegarLoop]: Abstraction has 19412 states and 26633 transitions. [2018-11-07 21:16:22,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 21:16:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 26633 transitions. [2018-11-07 21:16:22,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2018-11-07 21:16:22,508 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:16:22,509 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:16:22,509 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:16:22,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:22,509 INFO L82 PathProgramCache]: Analyzing trace with hash -38704734, now seen corresponding path program 1 times [2018-11-07 21:16:22,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:16:22,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:22,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:16:22,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:16:22,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:16:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:16:23,182 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:16:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 150 proven. 198 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-11-07 21:16:23,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:16:23,763 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:16:23,763 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 820 with the following transitions: [2018-11-07 21:16:23,764 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [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], [1931], [1933], [1936], [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], [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], [2368], [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], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 21:16:23,776 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:16:23,776 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:16:25,667 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:16:25,667 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 21:16:25,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:16:25,677 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:16:26,777 INFO L227 lantSequenceWeakener]: Weakened 383 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-07 21:16:26,777 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:16:27,599 INFO L415 sIntCurrentIteration]: We unified 818 AI predicates to 818 [2018-11-07 21:16:27,599 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:16:27,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:16:27,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [8] total 37 [2018-11-07 21:16:27,600 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:16:27,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 21:16:27,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 21:16:27,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2018-11-07 21:16:27,602 INFO L87 Difference]: Start difference. First operand 19412 states and 26633 transitions. Second operand 31 states. [2018-11-07 21:17:25,246 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 21:17:35,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 21:17:35,140 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:17:35,145 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:17:35,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:17:35 BoogieIcfgContainer [2018-11-07 21:17:35,146 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:17:35,147 INFO L168 Benchmark]: Toolchain (without parser) took 218791.32 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 21:17:35,148 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:17:35,149 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1727.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:17:35,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 316.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.6 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:17:35,150 INFO L168 Benchmark]: Boogie Preprocessor took 214.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:17:35,151 INFO L168 Benchmark]: RCFGBuilder took 9207.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 515.4 MB). Peak memory consumption was 515.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:17:35,152 INFO L168 Benchmark]: TraceAbstraction took 207320.16 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 21:17:35,157 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1727.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 316.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -955.6 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 214.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9207.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 515.4 MB). Peak memory consumption was 515.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207320.16 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 2.9 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while BasicCegarLoop was constructing difference of abstraction (19412states) and FLOYD_HOARE automaton (currently 34 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (9939 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 207.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 187.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3554 SDtfs, 20456 SDslu, 1484 SDs, 0 SdLazy, 47526 SolverSat, 6711 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1663 GetRequests, 1493 SyntacticMatches, 60 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19412occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.5s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9981541080416412 AbsIntWeakeningRatio, 0.061829652996845424 AbsIntAvgWeakeningVarsNumRemoved, 15.830283911671925 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 435 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 2402 NumberOfCodeBlocks, 2402 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2394 ConstructedInterpolants, 0 QuantifiedInterpolants, 4317561 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 939/1462 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown