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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:27:41,327 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:27:41,329 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:27:41,342 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:27:41,342 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:27:41,343 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:27:41,344 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:27:41,347 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:27:41,352 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:27:41,353 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:27:41,355 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:27:41,356 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:27:41,358 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:27:41,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:27:41,362 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:27:41,363 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:27:41,364 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:27:41,368 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:27:41,379 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:27:41,381 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:27:41,385 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:27:41,386 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:27:41,392 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:27:41,394 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:27:41,394 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:27:41,395 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:27:41,396 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:27:41,399 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:27:41,400 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:27:41,401 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:27:41,401 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:27:41,406 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:27:41,406 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:27:41,406 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:27:41,407 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:27:41,410 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:27:41,410 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:27:41,432 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:27:41,432 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:27:41,433 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:27:41,433 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:27:41,434 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:27:41,434 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:27:41,434 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:27:41,434 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:27:41,434 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:27:41,435 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:27:41,435 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:27:41,435 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:27:41,435 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:27:41,435 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:27:41,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:27:41,436 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:27:41,437 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:27:41,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:27:41,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:27:41,437 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:27:41,437 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:27:41,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:27:41,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:27:41,438 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:27:41,438 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:27:41,438 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:27:41,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:27:41,439 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:27:41,439 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:27:41,439 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:27:41,439 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:27:41,440 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:27:41,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:27:41,440 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:27:41,440 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:27:41,440 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:27:41,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:27:41,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:27:41,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:27:41,515 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:27:41,516 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:27:41,516 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 06:27:41,584 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28cceaf14/939cea1f276f42b78c73b28b071b02a4/FLAGd9546ecb4 [2018-11-07 06:27:42,177 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:27:42,178 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 06:27:42,200 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28cceaf14/939cea1f276f42b78c73b28b071b02a4/FLAGd9546ecb4 [2018-11-07 06:27:42,220 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28cceaf14/939cea1f276f42b78c73b28b071b02a4 [2018-11-07 06:27:42,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:27:42,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:27:42,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:27:42,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:27:42,238 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:27:42,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:42,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2c97da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42, skipping insertion in model container [2018-11-07 06:27:42,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:42,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:27:42,326 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:27:42,774 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:27:42,784 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:27:42,958 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:27:42,976 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:27:42,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42 WrapperNode [2018-11-07 06:27:42,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:27:42,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:27:42,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:27:42,978 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:27:42,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:43,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:43,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:27:43,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:27:43,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:27:43,126 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:27:43,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:43,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:43,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:43,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:43,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:43,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:43,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (1/1) ... [2018-11-07 06:27:43,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:27:43,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:27:43,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:27:43,246 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:27:43,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (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 06:27:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:27:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:27:43,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:27:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:27:43,319 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:27:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:27:43,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:27:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:27:43,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:27:46,750 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:27:46,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:27:46 BoogieIcfgContainer [2018-11-07 06:27:46,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:27:46,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:27:46,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:27:46,755 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:27:46,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:27:42" (1/3) ... [2018-11-07 06:27:46,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6666b65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:27:46, skipping insertion in model container [2018-11-07 06:27:46,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:27:42" (2/3) ... [2018-11-07 06:27:46,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6666b65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:27:46, skipping insertion in model container [2018-11-07 06:27:46,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:27:46" (3/3) ... [2018-11-07 06:27:46,759 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 06:27:46,769 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:27:46,778 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:27:46,796 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:27:46,846 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:27:46,846 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:27:46,846 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:27:46,846 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:27:46,847 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:27:46,847 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:27:46,847 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:27:46,847 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:27:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:27:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-07 06:27:46,882 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:46,885 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] [2018-11-07 06:27:46,887 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:46,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:46,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1333191671, now seen corresponding path program 1 times [2018-11-07 06:27:46,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:46,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:46,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:46,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:46,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:47,261 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 06:27:47,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:27:47,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:27:47,264 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:27:47,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:27:47,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:27:47,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:27:47,293 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 06:27:50,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:50,143 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 06:27:50,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:27:50,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-07 06:27:50,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:50,169 INFO L225 Difference]: With dead ends: 894 [2018-11-07 06:27:50,170 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 06:27:50,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:27:50,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 06:27:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 06:27:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 06:27:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-11-07 06:27:50,300 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 21 [2018-11-07 06:27:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:50,300 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-11-07 06:27:50,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:27:50,301 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-11-07 06:27:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 06:27:50,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:50,315 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:27:50,315 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:50,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:50,316 INFO L82 PathProgramCache]: Analyzing trace with hash -128001133, now seen corresponding path program 1 times [2018-11-07 06:27:50,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:50,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:50,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:50,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:50,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:27:50,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:27:50,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:27:50,637 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:27:50,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:27:50,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:27:50,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:27:50,640 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-11-07 06:27:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:53,667 INFO L93 Difference]: Finished difference Result 2358 states and 3922 transitions. [2018-11-07 06:27:53,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:27:53,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-11-07 06:27:53,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:53,687 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 06:27:53,687 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 06:27:53,695 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:27:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 06:27:53,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 06:27:53,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 06:27:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2621 transitions. [2018-11-07 06:27:53,784 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2621 transitions. Word has length 134 [2018-11-07 06:27:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:53,785 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2621 transitions. [2018-11-07 06:27:53,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:27:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2621 transitions. [2018-11-07 06:27:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 06:27:53,800 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:53,800 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:27:53,800 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:53,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:53,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1381552484, now seen corresponding path program 1 times [2018-11-07 06:27:53,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:53,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:53,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:53,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:53,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:27:54,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:27:54,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:27:54,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:27:54,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:27:54,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:27:54,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:27:54,093 INFO L87 Difference]: Start difference. First operand 1731 states and 2621 transitions. Second operand 4 states. [2018-11-07 06:27:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:57,124 INFO L93 Difference]: Finished difference Result 6200 states and 9916 transitions. [2018-11-07 06:27:57,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:27:57,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-11-07 06:27:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:57,163 INFO L225 Difference]: With dead ends: 6200 [2018-11-07 06:27:57,163 INFO L226 Difference]: Without dead ends: 4475 [2018-11-07 06:27:57,187 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:27:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2018-11-07 06:27:57,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4292. [2018-11-07 06:27:57,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4292 states. [2018-11-07 06:27:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 6361 transitions. [2018-11-07 06:27:57,344 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 6361 transitions. Word has length 155 [2018-11-07 06:27:57,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:57,344 INFO L480 AbstractCegarLoop]: Abstraction has 4292 states and 6361 transitions. [2018-11-07 06:27:57,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:27:57,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 6361 transitions. [2018-11-07 06:27:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-07 06:27:57,360 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:57,360 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 06:27:57,361 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:57,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:57,361 INFO L82 PathProgramCache]: Analyzing trace with hash 622289172, now seen corresponding path program 1 times [2018-11-07 06:27:57,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:57,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:57,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:57,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:57,363 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:57,859 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-11-07 06:27:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 119 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 06:27:58,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:58,446 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:58,447 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-11-07 06:27:58,449 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:58,497 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:58,499 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:59,609 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:27:59,611 INFO L272 AbstractInterpreter]: Visited 137 different actions 137 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:27:59,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:59,656 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:28:00,576 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 77.38% of their original sizes. [2018-11-07 06:28:00,577 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:28:00,819 INFO L415 sIntCurrentIteration]: We unified 312 AI predicates to 312 [2018-11-07 06:28:00,819 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:28:00,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:28:00,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2018-11-07 06:28:00,821 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:28:00,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:28:00,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:28:00,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:28:00,822 INFO L87 Difference]: Start difference. First operand 4292 states and 6361 transitions. Second operand 6 states. [2018-11-07 06:28:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:28:12,947 INFO L93 Difference]: Finished difference Result 8763 states and 12926 transitions. [2018-11-07 06:28:12,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:28:12,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 313 [2018-11-07 06:28:12,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:28:12,974 INFO L225 Difference]: With dead ends: 8763 [2018-11-07 06:28:12,975 INFO L226 Difference]: Without dead ends: 4477 [2018-11-07 06:28:12,997 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:28:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2018-11-07 06:28:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 4475. [2018-11-07 06:28:13,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4475 states. [2018-11-07 06:28:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6552 transitions. [2018-11-07 06:28:13,124 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6552 transitions. Word has length 313 [2018-11-07 06:28:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:28:13,124 INFO L480 AbstractCegarLoop]: Abstraction has 4475 states and 6552 transitions. [2018-11-07 06:28:13,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:28:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6552 transitions. [2018-11-07 06:28:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-07 06:28:13,137 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:28:13,137 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 06:28:13,138 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:28:13,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:13,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1980550211, now seen corresponding path program 1 times [2018-11-07 06:28:13,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:28:13,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:13,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:28:13,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:13,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:28:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:28:13,952 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 06:28:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 130 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:28:14,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:28:14,443 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:28:14,443 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 325 with the following transitions: [2018-11-07 06:28:14,444 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:28:14,450 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:28:14,450 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:28:14,771 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:28:14,772 INFO L272 AbstractInterpreter]: Visited 140 different actions 273 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:28:14,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:14,810 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:28:15,250 INFO L227 lantSequenceWeakener]: Weakened 321 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-07 06:28:15,250 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:28:15,820 INFO L415 sIntCurrentIteration]: We unified 323 AI predicates to 323 [2018-11-07 06:28:15,820 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:28:15,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:28:15,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 06:28:15,821 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:28:15,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:28:15,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:28:15,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:28:15,822 INFO L87 Difference]: Start difference. First operand 4475 states and 6552 transitions. Second operand 10 states. [2018-11-07 06:28:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:28:57,245 INFO L93 Difference]: Finished difference Result 9317 states and 13602 transitions. [2018-11-07 06:28:57,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 06:28:57,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 324 [2018-11-07 06:28:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:28:57,273 INFO L225 Difference]: With dead ends: 9317 [2018-11-07 06:28:57,274 INFO L226 Difference]: Without dead ends: 5031 [2018-11-07 06:28:57,297 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 332 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:28:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2018-11-07 06:28:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 5028. [2018-11-07 06:28:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5028 states. [2018-11-07 06:28:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 7145 transitions. [2018-11-07 06:28:57,426 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 7145 transitions. Word has length 324 [2018-11-07 06:28:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:28:57,426 INFO L480 AbstractCegarLoop]: Abstraction has 5028 states and 7145 transitions. [2018-11-07 06:28:57,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:28:57,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 7145 transitions. [2018-11-07 06:28:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 06:28:57,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:28:57,447 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:28:57,448 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:28:57,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1429919366, now seen corresponding path program 1 times [2018-11-07 06:28:57,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:28:57,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:57,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:28:57,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:28:57,452 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:28:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:28:58,501 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 06:28:58,776 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-11-07 06:28:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 254 proven. 224 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 06:28:59,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:28:59,197 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:28:59,198 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 06:28:59,198 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:28:59,203 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:28:59,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:28:59,478 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:28:59,478 INFO L272 AbstractInterpreter]: Visited 141 different actions 276 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 06:28:59,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:28:59,489 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:28:59,965 INFO L227 lantSequenceWeakener]: Weakened 421 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-07 06:28:59,965 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:29:00,050 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-11-07 06:29:00,050 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:29:00,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:29:00,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 06:29:00,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:29:00,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:29:00,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:29:00,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:29:00,053 INFO L87 Difference]: Start difference. First operand 5028 states and 7145 transitions. Second operand 10 states. [2018-11-07 06:29:24,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:29:24,701 INFO L93 Difference]: Finished difference Result 10055 states and 14307 transitions. [2018-11-07 06:29:24,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:29:24,701 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 424 [2018-11-07 06:29:24,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:29:24,728 INFO L225 Difference]: With dead ends: 10055 [2018-11-07 06:29:24,728 INFO L226 Difference]: Without dead ends: 5216 [2018-11-07 06:29:24,744 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 431 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:29:24,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2018-11-07 06:29:24,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 5213. [2018-11-07 06:29:24,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5213 states. [2018-11-07 06:29:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7344 transitions. [2018-11-07 06:29:24,860 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7344 transitions. Word has length 424 [2018-11-07 06:29:24,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:29:24,861 INFO L480 AbstractCegarLoop]: Abstraction has 5213 states and 7344 transitions. [2018-11-07 06:29:24,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:29:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7344 transitions. [2018-11-07 06:29:24,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-11-07 06:29:24,881 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:29:24,881 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:29:24,881 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:29:24,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:24,882 INFO L82 PathProgramCache]: Analyzing trace with hash -676378677, now seen corresponding path program 1 times [2018-11-07 06:29:24,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:29:24,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:24,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:29:24,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:24,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:29:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:29:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 245 proven. 147 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-11-07 06:29:25,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:29:25,598 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:29:25,598 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 481 with the following transitions: [2018-11-07 06:29:25,599 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:29:25,603 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:29:25,603 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:29:31,459 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:29:31,459 INFO L272 AbstractInterpreter]: Visited 123 different actions 491 times. Merged at 10 different actions 35 times. Never widened. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:29:31,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:31,470 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:29:31,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:29:31,470 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:29:31,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:29:31,488 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:29:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:29:31,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:29:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 668 proven. 2 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-11-07 06:29:31,990 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:29:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 245 proven. 147 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-11-07 06:29:32,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:29:32,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 06:29:32,724 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:29:32,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:29:32,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:29:32,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-07 06:29:32,726 INFO L87 Difference]: Start difference. First operand 5213 states and 7344 transitions. Second operand 10 states. [2018-11-07 06:29:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:29:37,862 INFO L93 Difference]: Finished difference Result 14401 states and 21622 transitions. [2018-11-07 06:29:37,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 06:29:37,863 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 480 [2018-11-07 06:29:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:29:37,909 INFO L225 Difference]: With dead ends: 14401 [2018-11-07 06:29:37,909 INFO L226 Difference]: Without dead ends: 9562 [2018-11-07 06:29:37,955 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 972 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-11-07 06:29:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9562 states. [2018-11-07 06:29:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9562 to 9147. [2018-11-07 06:29:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9147 states. [2018-11-07 06:29:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 12495 transitions. [2018-11-07 06:29:38,177 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 12495 transitions. Word has length 480 [2018-11-07 06:29:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:29:38,178 INFO L480 AbstractCegarLoop]: Abstraction has 9147 states and 12495 transitions. [2018-11-07 06:29:38,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:29:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 12495 transitions. [2018-11-07 06:29:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-11-07 06:29:38,209 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:29:38,209 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:29:38,209 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:29:38,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:38,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1350361432, now seen corresponding path program 1 times [2018-11-07 06:29:38,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:29:38,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:38,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:29:38,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:38,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:29:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:29:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 168 proven. 265 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2018-11-07 06:29:38,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:29:38,989 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:29:38,989 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 510 with the following transitions: [2018-11-07 06:29:38,990 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:29:38,996 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:29:38,996 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:29:40,273 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:29:40,273 INFO L272 AbstractInterpreter]: Visited 143 different actions 577 times. Merged at 10 different actions 41 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:29:40,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:40,302 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:29:40,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:29:40,302 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:29:40,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:29:40,323 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:29:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:29:40,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:29:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 624 proven. 2 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-11-07 06:29:41,020 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:29:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 168 proven. 265 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2018-11-07 06:29:41,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:29:41,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 06:29:41,575 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:29:41,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:29:41,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:29:41,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:29:41,578 INFO L87 Difference]: Start difference. First operand 9147 states and 12495 transitions. Second operand 9 states. [2018-11-07 06:29:43,860 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 06:29:47,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:29:47,680 INFO L93 Difference]: Finished difference Result 19784 states and 28013 transitions. [2018-11-07 06:29:47,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 06:29:47,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 509 [2018-11-07 06:29:47,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:29:47,723 INFO L225 Difference]: With dead ends: 19784 [2018-11-07 06:29:47,724 INFO L226 Difference]: Without dead ends: 10642 [2018-11-07 06:29:47,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1035 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2018-11-07 06:29:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10642 states. [2018-11-07 06:29:47,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10642 to 10494. [2018-11-07 06:29:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10494 states. [2018-11-07 06:29:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10494 states to 10494 states and 13512 transitions. [2018-11-07 06:29:47,951 INFO L78 Accepts]: Start accepts. Automaton has 10494 states and 13512 transitions. Word has length 509 [2018-11-07 06:29:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:29:47,952 INFO L480 AbstractCegarLoop]: Abstraction has 10494 states and 13512 transitions. [2018-11-07 06:29:47,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:29:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 10494 states and 13512 transitions. [2018-11-07 06:29:47,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-11-07 06:29:47,970 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:29:47,970 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-07 06:29:47,971 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:29:47,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:47,971 INFO L82 PathProgramCache]: Analyzing trace with hash -613228998, now seen corresponding path program 1 times [2018-11-07 06:29:47,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:29:47,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:47,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:29:47,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:29:47,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:29:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:29:49,346 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 06:29:49,812 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 06:29:50,413 WARN L179 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-11-07 06:29:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 389 proven. 409 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-07 06:29:51,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:29:51,063 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:29:51,063 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 534 with the following transitions: [2018-11-07 06:29:51,063 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:29:51,066 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:29:51,066 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:29:56,768 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:29:56,769 INFO L272 AbstractInterpreter]: Visited 143 different actions 568 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:29:56,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:29:56,774 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:29:56,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:29:56,774 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:29:56,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:29:56,785 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:29:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:29:56,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:29:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 687 proven. 2 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-11-07 06:29:57,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:29:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 383 proven. 86 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2018-11-07 06:29:58,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:29:58,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:29:58,287 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:29:58,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:29:58,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:29:58,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:29:58,288 INFO L87 Difference]: Start difference. First operand 10494 states and 13512 transitions. Second operand 17 states. [2018-11-07 06:30:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:30:05,272 INFO L93 Difference]: Finished difference Result 22633 states and 31444 transitions. [2018-11-07 06:30:05,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 06:30:05,273 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 533 [2018-11-07 06:30:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:30:05,322 INFO L225 Difference]: With dead ends: 22633 [2018-11-07 06:30:05,322 INFO L226 Difference]: Without dead ends: 11082 [2018-11-07 06:30:05,359 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1077 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 06:30:05,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2018-11-07 06:30:05,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 10657. [2018-11-07 06:30:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10657 states. [2018-11-07 06:30:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10657 states to 10657 states and 12773 transitions. [2018-11-07 06:30:05,571 INFO L78 Accepts]: Start accepts. Automaton has 10657 states and 12773 transitions. Word has length 533 [2018-11-07 06:30:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:30:05,572 INFO L480 AbstractCegarLoop]: Abstraction has 10657 states and 12773 transitions. [2018-11-07 06:30:05,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:30:05,572 INFO L276 IsEmpty]: Start isEmpty. Operand 10657 states and 12773 transitions. [2018-11-07 06:30:05,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-11-07 06:30:05,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:30:05,582 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 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 06:30:05,582 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:30:05,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:05,583 INFO L82 PathProgramCache]: Analyzing trace with hash -201219189, now seen corresponding path program 1 times [2018-11-07 06:30:05,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:30:05,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:05,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:05,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:05,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:30:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 427 proven. 513 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-11-07 06:30:07,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:07,332 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:30:07,332 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 673 with the following transitions: [2018-11-07 06:30:07,333 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:30:07,335 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:30:07,336 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:30:12,931 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:30:12,931 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:30:12,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:12,940 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:30:12,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:12,940 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:30:12,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:12,950 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:30:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:13,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:30:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 791 proven. 2 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-11-07 06:30:13,734 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:30:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 473 proven. 86 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-11-07 06:30:14,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:30:14,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2018-11-07 06:30:14,272 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:30:14,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:30:14,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:30:14,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:30:14,274 INFO L87 Difference]: Start difference. First operand 10657 states and 12773 transitions. Second operand 17 states. [2018-11-07 06:30:18,232 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-07 06:30:18,422 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2018-11-07 06:30:18,721 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-11-07 06:30:19,519 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-11-07 06:30:20,747 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-11-07 06:30:20,925 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2018-11-07 06:30:22,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:30:22,415 INFO L93 Difference]: Finished difference Result 22362 states and 26997 transitions. [2018-11-07 06:30:22,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-07 06:30:22,416 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 672 [2018-11-07 06:30:22,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:30:22,450 INFO L225 Difference]: With dead ends: 22362 [2018-11-07 06:30:22,450 INFO L226 Difference]: Without dead ends: 11894 [2018-11-07 06:30:22,474 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1416 GetRequests, 1366 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2018-11-07 06:30:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11894 states. [2018-11-07 06:30:22,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11894 to 11320. [2018-11-07 06:30:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11320 states. [2018-11-07 06:30:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11320 states to 11320 states and 13263 transitions. [2018-11-07 06:30:22,658 INFO L78 Accepts]: Start accepts. Automaton has 11320 states and 13263 transitions. Word has length 672 [2018-11-07 06:30:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:30:22,659 INFO L480 AbstractCegarLoop]: Abstraction has 11320 states and 13263 transitions. [2018-11-07 06:30:22,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:30:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 11320 states and 13263 transitions. [2018-11-07 06:30:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-11-07 06:30:22,669 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:30:22,670 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:30:22,670 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:30:22,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:22,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1619755602, now seen corresponding path program 1 times [2018-11-07 06:30:22,671 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:30:22,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:22,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:22,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:22,672 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:30:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 349 proven. 150 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2018-11-07 06:30:23,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:23,155 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:30:23,155 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 705 with the following transitions: [2018-11-07 06:30:23,156 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:30:23,158 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:30:23,159 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:30:28,542 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:30:28,542 INFO L272 AbstractInterpreter]: Visited 193 different actions 775 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 06:30:28,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:28,549 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:30:28,549 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:28,549 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:30:28,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:28,558 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:30:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:28,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:30:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 1043 proven. 2 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2018-11-07 06:30:29,111 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:30:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1487 backedges. 349 proven. 150 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2018-11-07 06:30:29,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:30:29,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 06:30:29,625 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:30:29,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 06:30:29,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 06:30:29,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:30:29,626 INFO L87 Difference]: Start difference. First operand 11320 states and 13263 transitions. Second operand 7 states. [2018-11-07 06:30:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:30:31,448 INFO L93 Difference]: Finished difference Result 26795 states and 32221 transitions. [2018-11-07 06:30:31,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 06:30:31,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 704 [2018-11-07 06:30:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:30:31,494 INFO L225 Difference]: With dead ends: 26795 [2018-11-07 06:30:31,494 INFO L226 Difference]: Without dead ends: 15849 [2018-11-07 06:30:31,519 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1421 GetRequests, 1409 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-07 06:30:31,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15849 states. [2018-11-07 06:30:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15849 to 15282. [2018-11-07 06:30:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15282 states. [2018-11-07 06:30:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15282 states to 15282 states and 17613 transitions. [2018-11-07 06:30:31,750 INFO L78 Accepts]: Start accepts. Automaton has 15282 states and 17613 transitions. Word has length 704 [2018-11-07 06:30:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:30:31,751 INFO L480 AbstractCegarLoop]: Abstraction has 15282 states and 17613 transitions. [2018-11-07 06:30:31,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 06:30:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 15282 states and 17613 transitions. [2018-11-07 06:30:31,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2018-11-07 06:30:31,766 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:30:31,766 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:30:31,767 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:30:31,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:31,767 INFO L82 PathProgramCache]: Analyzing trace with hash -316914258, now seen corresponding path program 1 times [2018-11-07 06:30:31,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:30:31,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:31,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:31,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:31,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:30:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:32,713 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-11-07 06:30:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 485 proven. 1065 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2018-11-07 06:30:34,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:34,608 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:30:34,608 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 876 with the following transitions: [2018-11-07 06:30:34,608 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:30:34,611 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:30:34,611 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:30:39,965 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:30:39,966 INFO L272 AbstractInterpreter]: Visited 193 different actions 775 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 06:30:40,060 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:40,061 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:30:40,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:40,061 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:30:40,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:40,070 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:30:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:40,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:30:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 1555 proven. 2 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2018-11-07 06:30:41,399 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:30:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2168 backedges. 479 proven. 335 refuted. 0 times theorem prover too weak. 1354 trivial. 0 not checked. [2018-11-07 06:30:42,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:30:42,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-11-07 06:30:42,926 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:30:42,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 06:30:42,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 06:30:42,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:30:42,929 INFO L87 Difference]: Start difference. First operand 15282 states and 17613 transitions. Second operand 18 states. [2018-11-07 06:30:44,831 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-11-07 06:30:45,661 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-11-07 06:30:46,112 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-11-07 06:30:46,370 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-11-07 06:30:49,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:30:49,324 INFO L93 Difference]: Finished difference Result 31808 states and 36921 transitions. [2018-11-07 06:30:49,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 06:30:49,325 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 875 [2018-11-07 06:30:49,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:30:49,364 INFO L225 Difference]: With dead ends: 31808 [2018-11-07 06:30:49,364 INFO L226 Difference]: Without dead ends: 16900 [2018-11-07 06:30:49,393 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1808 GetRequests, 1764 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=439, Invalid=1541, Unknown=0, NotChecked=0, Total=1980 [2018-11-07 06:30:49,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16900 states. [2018-11-07 06:30:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16900 to 16090. [2018-11-07 06:30:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16090 states. [2018-11-07 06:30:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16090 states to 16090 states and 18459 transitions. [2018-11-07 06:30:49,667 INFO L78 Accepts]: Start accepts. Automaton has 16090 states and 18459 transitions. Word has length 875 [2018-11-07 06:30:49,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:30:49,668 INFO L480 AbstractCegarLoop]: Abstraction has 16090 states and 18459 transitions. [2018-11-07 06:30:49,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 06:30:49,668 INFO L276 IsEmpty]: Start isEmpty. Operand 16090 states and 18459 transitions. [2018-11-07 06:30:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2018-11-07 06:30:49,684 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:30:49,685 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-07 06:30:49,685 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:30:49,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:49,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2016771542, now seen corresponding path program 1 times [2018-11-07 06:30:49,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:30:49,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:49,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:49,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:30:49,687 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:30:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 1175 proven. 6 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2018-11-07 06:30:50,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:50,735 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:30:50,735 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 928 with the following transitions: [2018-11-07 06:30:50,736 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:30:50,739 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:30:50,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:30:56,445 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:30:56,446 INFO L272 AbstractInterpreter]: Visited 194 different actions 779 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Found 13 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-07 06:30:56,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:30:56,450 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:30:56,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:30:56,450 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:30:56,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:30:56,462 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:30:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:30:56,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:30:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 1175 proven. 6 refuted. 0 times theorem prover too weak. 1091 trivial. 0 not checked. [2018-11-07 06:30:57,181 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:30:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2272 backedges. 1175 proven. 86 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2018-11-07 06:30:57,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:30:57,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 13 [2018-11-07 06:30:57,944 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:30:57,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 06:30:57,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 06:30:57,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-07 06:30:57,946 INFO L87 Difference]: Start difference. First operand 16090 states and 18459 transitions. Second operand 8 states. [2018-11-07 06:31:00,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:31:00,775 INFO L93 Difference]: Finished difference Result 34772 states and 40189 transitions. [2018-11-07 06:31:00,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 06:31:00,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 927 [2018-11-07 06:31:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:31:00,820 INFO L225 Difference]: With dead ends: 34772 [2018-11-07 06:31:00,820 INFO L226 Difference]: Without dead ends: 18873 [2018-11-07 06:31:00,851 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1871 GetRequests, 1853 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:31:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18873 states. [2018-11-07 06:31:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18873 to 17214. [2018-11-07 06:31:01,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17214 states. [2018-11-07 06:31:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17214 states to 17214 states and 19684 transitions. [2018-11-07 06:31:01,134 INFO L78 Accepts]: Start accepts. Automaton has 17214 states and 19684 transitions. Word has length 927 [2018-11-07 06:31:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:31:01,135 INFO L480 AbstractCegarLoop]: Abstraction has 17214 states and 19684 transitions. [2018-11-07 06:31:01,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 06:31:01,135 INFO L276 IsEmpty]: Start isEmpty. Operand 17214 states and 19684 transitions. [2018-11-07 06:31:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1059 [2018-11-07 06:31:01,165 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:31:01,166 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2018-11-07 06:31:01,166 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:31:01,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:31:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash -926939718, now seen corresponding path program 1 times [2018-11-07 06:31:01,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:31:01,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:31:01,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:31:01,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:31:01,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:31:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:31:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 795 proven. 1576 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2018-11-07 06:31:04,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:31:04,472 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:31:04,473 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1059 with the following transitions: [2018-11-07 06:31:04,473 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:31:04,476 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:31:04,476 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:31:09,932 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:31:09,932 INFO L272 AbstractInterpreter]: Visited 195 different actions 783 times. Merged at 12 different actions 39 times. Widened at 1 different actions 1 times. Found 14 fixpoints after 7 different actions. Largest state had 24 variables. [2018-11-07 06:31:09,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:31:09,941 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:31:09,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:31:09,942 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:31:09,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:31:09,954 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:31:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:31:10,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:31:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 1400 proven. 2 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2018-11-07 06:31:11,169 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:31:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3064 backedges. 846 proven. 86 refuted. 0 times theorem prover too weak. 2132 trivial. 0 not checked. [2018-11-07 06:31:12,205 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:31:12,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 19 [2018-11-07 06:31:12,205 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:31:12,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 06:31:12,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 06:31:12,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:31:12,207 INFO L87 Difference]: Start difference. First operand 17214 states and 19684 transitions. Second operand 18 states. [2018-11-07 06:31:18,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:31:18,597 INFO L93 Difference]: Finished difference Result 33030 states and 38097 transitions. [2018-11-07 06:31:18,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-07 06:31:18,598 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1058 [2018-11-07 06:31:18,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:31:18,629 INFO L225 Difference]: With dead ends: 33030 [2018-11-07 06:31:18,629 INFO L226 Difference]: Without dead ends: 16007 [2018-11-07 06:31:18,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2210 GetRequests, 2150 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=622, Invalid=2684, Unknown=0, NotChecked=0, Total=3306 [2018-11-07 06:31:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16007 states. [2018-11-07 06:31:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16007 to 15612. [2018-11-07 06:31:18,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15612 states. [2018-11-07 06:31:18,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15612 states to 15612 states and 17205 transitions. [2018-11-07 06:31:18,895 INFO L78 Accepts]: Start accepts. Automaton has 15612 states and 17205 transitions. Word has length 1058 [2018-11-07 06:31:18,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:31:18,896 INFO L480 AbstractCegarLoop]: Abstraction has 15612 states and 17205 transitions. [2018-11-07 06:31:18,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 06:31:18,896 INFO L276 IsEmpty]: Start isEmpty. Operand 15612 states and 17205 transitions. [2018-11-07 06:31:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1502 [2018-11-07 06:31:18,928 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:31:18,929 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:31:18,929 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:31:18,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:31:18,929 INFO L82 PathProgramCache]: Analyzing trace with hash 715368498, now seen corresponding path program 1 times [2018-11-07 06:31:18,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:31:18,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:31:18,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:31:18,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:31:18,931 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:31:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:31:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6322 backedges. 1204 proven. 3890 refuted. 0 times theorem prover too weak. 1228 trivial. 0 not checked. [2018-11-07 06:31:22,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:31:22,711 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:31:22,711 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1502 with the following transitions: [2018-11-07 06:31:22,711 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:31:22,714 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:31:22,714 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 06:31:28,058 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 06:31:28,059 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 06:31:28,059 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 06:31:28,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:31:28,060 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:31:28,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:31:28,069 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:31:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:31:28,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:31:28,480 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 06:31:28,681 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:31:28,681 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:31:28,687 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:31:28,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:31:28 BoogieIcfgContainer [2018-11-07 06:31:28,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:31:28,688 INFO L168 Benchmark]: Toolchain (without parser) took 226456.61 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -379.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 06:31:28,689 INFO L168 Benchmark]: CDTParser took 0.24 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 06:31:28,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 06:31:28,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 148.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2018-11-07 06:31:28,691 INFO L168 Benchmark]: Boogie Preprocessor took 118.88 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:31:28,691 INFO L168 Benchmark]: RCFGBuilder took 3505.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 144.0 MB). Peak memory consumption was 144.0 MB. Max. memory is 7.1 GB. [2018-11-07 06:31:28,692 INFO L168 Benchmark]: TraceAbstraction took 221935.56 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 259.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 06:31:28,696 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 743.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 148.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.88 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3505.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 144.0 MB). Peak memory consumption was 144.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221935.56 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 259.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was analyzing trace of length 1502 with TraceHistMax 12,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 21 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 221.8s OverallTime, 15 OverallIterations, 12 TraceHistogramMax, 131.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1875 SDtfs, 32405 SDslu, 3208 SDs, 0 SdLazy, 35780 SolverSat, 6354 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 13010 GetRequests, 12674 SyntacticMatches, 15 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17214occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 47.7s AbstIntTime, 12 AbstIntIterations, 3 AbstIntStrong, 0.9971429443135702 AbsIntWeakeningRatio, 0.09640831758034027 AbsIntAvgWeakeningVarsNumRemoved, 16.261814744801512 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 5184 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 22.3s InterpolantComputationTime, 12887 NumberOfCodeBlocks, 12887 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 18615 ConstructedInterpolants, 0 QuantifiedInterpolants, 66349409 SizeOfPredicates, 26 NumberOfNonLiveVariables, 8441 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 33896/39762 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown